1 00:00:00,000 --> 00:00:07,000 On this episode of Mythbusters, a blast from the past. 2 00:00:07,000 --> 00:00:13,000 As Adam and Jamie hit the history books. 3 00:00:13,000 --> 00:00:17,000 There would be a lot of fire and I could get burned. 4 00:00:17,000 --> 00:00:22,000 To explore an explosive myth from the Civil War. 5 00:00:23,000 --> 00:00:30,000 Did the Confederate Army build the world's first long range missile? 6 00:00:30,000 --> 00:00:34,000 In three, two, one. 7 00:00:38,000 --> 00:00:40,000 Who are the Mythbusters? 8 00:00:40,000 --> 00:00:45,000 Adam Savage, Jukko, and Jamie Heineman. 9 00:00:45,000 --> 00:00:47,000 This is going to kill you. 10 00:00:48,000 --> 00:00:52,000 Between them more than 30 years special effects experience. 11 00:00:52,000 --> 00:00:54,000 That's what I'm talking about. 12 00:00:54,000 --> 00:00:57,000 They don't just tell the myths. 13 00:00:57,000 --> 00:01:00,000 They put them to the test. 14 00:01:00,000 --> 00:01:16,000 This one, I've been waiting for three whole years to make this one finally happen on the show. 15 00:01:16,000 --> 00:01:20,000 It's got danger, gunpowder, so I'm all for it. 16 00:01:20,000 --> 00:01:33,000 The myth is that late in the Civil War, the Confederate Army actually built, aimed, and launched a two-stage rocket from Richmond, Virginia to Washington, DC. 17 00:01:33,000 --> 00:01:35,000 Almost a hundred miles. 18 00:01:35,000 --> 00:01:41,000 Observers claim to have watched this rocket roar skyward, drop its first stage, and disappear from sight. 19 00:01:41,000 --> 00:01:43,000 Oh yes. 20 00:01:43,000 --> 00:01:46,000 It's a myth of ballistic proportions. 21 00:01:47,000 --> 00:01:52,000 The American Civil War was mostly slugged out with rifles and cannons. 22 00:01:52,000 --> 00:01:56,000 But did the Confederates have a secret weapon? 23 00:01:56,000 --> 00:02:00,000 Could they really have built the world's first long range missile? 24 00:02:00,000 --> 00:02:07,000 The Mythbusters and the build team are going to join forces to find out. 25 00:02:07,000 --> 00:02:09,000 So where should we start with this? 26 00:02:09,000 --> 00:02:20,000 Well, I think we can only begin with an examination of exactly what the state of the art of rocketry was, if any, at the time this myth is supposed to have happened, roughly 1865. 27 00:02:20,000 --> 00:02:27,000 So what you're getting at is that we need to get a bunch of plans for these rockets, build them, and see how well they actually worked. 28 00:02:27,000 --> 00:02:29,000 Shoot them off, see what they're capable of. 29 00:02:29,000 --> 00:02:30,000 Okay. 30 00:02:30,000 --> 00:02:42,000 First, before attempting to make the mythical 100-mile missile, the Mythbusters are building short-range rockets that were used in the Civil War. 31 00:02:42,000 --> 00:02:50,000 When complete, they'll launch them to learn whether the long-range Confederate rocket is even plausible. 32 00:02:50,000 --> 00:02:54,000 But so far, this build isn't exactly a walk in the park. 33 00:02:54,000 --> 00:03:00,000 Sixth. So, sixth larger, that's... 34 00:03:01,000 --> 00:03:07,000 With plans dating back over a century, this one is proving to be a bit of a brain drain. 35 00:03:07,000 --> 00:03:09,000 2.3A. 36 00:03:12,000 --> 00:03:15,000 Until finally, Jamie gets some inspiration. 37 00:03:16,000 --> 00:03:26,000 I'm building a replica of what is known as the Hail Rocket, and that type of rocket is generally acknowledged as the state of the art in the Civil War era. 38 00:03:27,000 --> 00:03:38,000 A state of the art because over its 2,000-yard range, it had a hint of accuracy, brought about by tail fins that caused it to spiral through the air. 39 00:03:39,000 --> 00:03:41,000 My, my, my, my! 40 00:03:41,000 --> 00:03:51,000 Armed with dusty plans from the Smithsonian, Jamie sets his sights high, but in case Hail falls flat, Adam's building another retro rocket. 41 00:03:51,000 --> 00:03:55,000 And his, like the Myth, is a two-stage ring. 42 00:03:56,000 --> 00:03:59,000 The Boxer Rocket is actually a rescue rocket. 43 00:03:59,000 --> 00:04:07,000 It was made to fire from one boat to another or from the shore to a boat in need of rescue, carrying a line so that that boat could be pulled to safety. 44 00:04:09,000 --> 00:04:12,000 The Boxer Rocket's initial thrust came from the first stage. 45 00:04:12,000 --> 00:04:20,000 As that burned out, it fell away, and the second stage fired up and carried the rope over 300 feet to the sinking ship. 46 00:04:22,000 --> 00:04:29,000 But for Adam, it's not all plain sailing, because no one seems to have built one for over a hundred years. 47 00:04:30,000 --> 00:04:32,000 I have no idea if this is going to work. 48 00:04:33,000 --> 00:04:41,000 While the Boxer makes progress, the Hail is out for the count, because Jamie's made an error of schoolboy proportions. 49 00:04:42,000 --> 00:04:44,000 And to avoid public humiliation... 50 00:04:45,000 --> 00:04:48,000 You know, if I don't talk, you don't, you don't get any good TV. 51 00:04:48,000 --> 00:04:50,000 He's run away from the cameraman. 52 00:04:52,000 --> 00:04:53,000 What happened? 53 00:04:54,000 --> 00:04:55,000 Nothing. 54 00:04:55,000 --> 00:04:57,000 Denial is a river in Africa. 55 00:04:57,000 --> 00:04:58,000 Come on. 56 00:04:59,000 --> 00:05:00,000 What happened? 57 00:05:00,000 --> 00:05:04,000 Did you accidentally weld the thing at the end of your pipe that was supposed to be a screw fitting? 58 00:05:05,000 --> 00:05:09,000 Overzealous welding has sealed his rocket shut, and he's not happy. 59 00:05:13,000 --> 00:05:22,000 We've had about, like, a couple of hours of playing around with the thing, and that's not interesting, but somehow when we screw up, everybody's all over it. 60 00:05:23,000 --> 00:05:30,000 While a sulking Jamie has to start from scratch, Tari's busy building the Civil War rocket launcher. 61 00:05:32,000 --> 00:05:41,000 It's a pretty simple design. It's just a channel that we're going to load the rockets into, and it's got two legs that support it in the front, and it also allows the angle to change. 62 00:05:41,000 --> 00:05:44,000 They're adjustable, so we can have different, you know, angles of trajectory. 63 00:05:45,000 --> 00:05:48,000 Time for a test, albeit with a flimsy firework. 64 00:05:49,000 --> 00:05:51,000 I'm not really sure what this one's going to do. 65 00:05:51,000 --> 00:05:54,000 It might scream. It might explode, but... 66 00:05:54,000 --> 00:05:55,000 Okay. 67 00:06:02,000 --> 00:06:06,000 You know what? The rocket followed the channel perfectly, and it sent it in the right angle. 68 00:06:06,000 --> 00:06:08,000 I just hope it's sturdy enough for the big rocket. 69 00:06:08,000 --> 00:06:11,000 I know. That's going to be a lot of thrust. 70 00:06:11,000 --> 00:06:14,000 I got some more rockets. I mean, we should light off a couple more. 71 00:06:14,000 --> 00:06:16,000 Yeah, like a couple at once. 72 00:06:17,000 --> 00:06:25,000 While Pyro Tari gets his kicks, Adam's made a find that changes the boxer and maybe the mythical rocket too. 73 00:06:25,000 --> 00:06:31,000 Upon doing some more research, it turns out that nobody's ever seen one of these rockets. 74 00:06:31,000 --> 00:06:35,000 No one's seen one in a long time. No one's got one. No one builds them. 75 00:06:35,000 --> 00:06:42,000 So there has been some confusion as to whether or not it was a true two-stage rocket or a compound rocket. 76 00:06:42,000 --> 00:06:47,000 And it turns out that it's a compound rocket, and indeed, it does not separate in the middle halfway through its ignition. 77 00:06:47,000 --> 00:06:54,000 So the boxer is not a true two-stage rocket. The sections don't split, they simply burn through each other. 78 00:06:54,000 --> 00:07:00,000 The idea that the mythical Confederate rocket was a two-stage must now be in doubt. 79 00:07:02,000 --> 00:07:07,000 As Adam puts the finishing touches to the boxer, Jamie's come out of his corner fighting 80 00:07:07,000 --> 00:07:13,000 and is already attaching those revolutionary tail fins that spun the hail rocket for accuracy. 81 00:07:13,000 --> 00:07:22,000 There was a price to pay to make these spin. Even with this clever design, it actually reduced the total range of the rocket. 82 00:07:22,000 --> 00:07:27,000 Range doesn't mean crap if it can't be accurate. I'll take accuracy over range any day. 83 00:07:27,000 --> 00:07:31,000 And that's the same conclusion as Mr. Hale drew. 84 00:07:31,000 --> 00:07:38,000 I'm fairly happy with this. It's not a polished, shiny thing, but it looks like it means business. 85 00:07:38,000 --> 00:07:44,000 At last, the rockets are ready. They just need the gunpowder fuel. 86 00:07:44,000 --> 00:07:50,000 Here we run into kind of a problem. First of all, it's illegal for you and I to pack black powder ourselves. 87 00:07:50,000 --> 00:07:59,000 But secondly, the pressures they packed these rockets under was really just monstrous, and that makes it even more dangerous. 88 00:07:59,000 --> 00:08:02,000 Sounds like we need to get our old buddy Eric Gates. 89 00:08:02,000 --> 00:08:09,000 Yeah, I think we should call Eric, and I think rather than go with black powder, we should ask Eric to supply us with some modern, equivalent motors 90 00:08:09,000 --> 00:08:14,000 that replicate the amount of thrust and burn time of the Civil War era rockets. 91 00:08:15,000 --> 00:08:22,000 Civil War rockets, but modern fuel. And for the imminent launch, the team head for the hills. 92 00:08:23,000 --> 00:08:30,000 The Mythbusters have built rockets that date back to the Civil War. 93 00:08:30,000 --> 00:08:39,000 They're going to launch them in the desert to help them learn how to build the mythical Confederate rocket, rumored to have a range of 120 miles. 94 00:08:41,000 --> 00:08:47,000 We're here in the Mojave Desert at the Cohen Dry Lakebed near Edwards Forest Base, 95 00:08:47,000 --> 00:08:53,000 and we're about to test the authentically recreated Civil War era rockets. 96 00:08:55,000 --> 00:09:00,000 Authentically recreated, but because of state laws, contemporarily fueled. 97 00:09:00,000 --> 00:09:05,000 Thanks to the rocket expertise of their honorary Mythbuster, Eric Gates. 98 00:09:08,000 --> 00:09:13,000 Eric has already helped show that an ancient Chinese entrepreneur failed to get into orbit. 99 00:09:18,000 --> 00:09:21,000 And can you do a full 360 on a swing? 100 00:09:23,000 --> 00:09:26,000 Well, only if you've got someone like Eric there to help. 101 00:09:28,000 --> 00:09:33,000 Today, the cool of the van has become Civil War mission control. 102 00:09:33,000 --> 00:09:35,000 I got something to show you guys. 103 00:09:37,000 --> 00:09:39,000 This right here is my boxer rocket. 104 00:09:39,000 --> 00:09:45,000 Adams is proud as a new father. And like a new baby, the rocket first gets weighed. 105 00:09:45,000 --> 00:09:48,000 All right, so 8.4 pounds for this thing. 106 00:09:48,000 --> 00:09:49,000 And measured. 107 00:09:50,000 --> 00:09:52,000 Diameter of the rocket is three inches. 108 00:09:52,000 --> 00:09:58,000 This data is then fed into a computer simulation to see whether the rocket stands a chance of flying. 109 00:10:00,000 --> 00:10:07,000 Okay, I've put a little set of fins on here to simulate the stick, and it looks like it's going to be stable. 110 00:10:07,000 --> 00:10:08,000 Let's try a motor. 111 00:10:08,000 --> 00:10:10,000 Let's put a K550 in it to start out. 112 00:10:10,000 --> 00:10:12,000 K550 it is. 113 00:10:13,000 --> 00:10:16,000 The computer's fully primed. 114 00:10:16,000 --> 00:10:17,000 Go. 115 00:10:17,000 --> 00:10:19,000 Flight pack, perfect. 116 00:10:20,000 --> 00:10:23,000 Range, 20,000 feet. 117 00:10:23,000 --> 00:10:29,000 Remember, these are really rough simulations because your nozzle is not the same as what comes with the motor. 118 00:10:29,000 --> 00:10:34,000 So these could be greatly off, but hopefully they're going to be fairly accurate predictions. 119 00:10:35,000 --> 00:10:39,000 Jamie's 20-pound rocket is historically more reliable than Adams. 120 00:10:40,000 --> 00:10:44,000 So what does the accurate computer make of it? 121 00:10:47,000 --> 00:10:52,000 See, right now it's doing about 500 feet and about 50 feet up, 60 feet up. 122 00:10:52,000 --> 00:10:56,000 That's not quite the spinning that the hail rocket was famed for. 123 00:10:58,000 --> 00:11:03,000 As launch looms, the rockets are ready to be fueled up with ammonium perchlorate motors. 124 00:11:04,000 --> 00:11:12,000 These modern motors are the most advanced in amateur rocketry, and may be a little more powerful than Civil War black powder. 125 00:11:14,000 --> 00:11:24,000 But as they wrap them to ensure a snug fit in the rockets, Adam and Jamie are wondering if the main myth has historical authenticity, or is it just another tall tale? 126 00:11:25,000 --> 00:11:41,000 Well, you know, now you can find references to the Civil War rocket all over the web, and they're saying that the rocket was about 12 feet long, and it carried a 10-pound gunpowder warhead. 127 00:11:42,000 --> 00:11:49,000 Well, the tale first showed up in 1958 in a southern newspaper written by a Vienna correspondent, signing only as C.R. Johnson. 128 00:11:49,000 --> 00:11:54,000 Well, our researchers were unable to find C.R. Johnson or the article. 129 00:11:57,000 --> 00:12:05,000 The myth may be nothing more than a mirage, but in this desert, it's team on as 60 seconds for the hail rocket. 130 00:12:06,000 --> 00:12:15,000 We built this according to official plans and specs of the period, and if it worked then, it ought to work now. 131 00:12:15,000 --> 00:12:18,000 What does our percentage maestro think? 132 00:12:19,000 --> 00:12:23,000 70% chance the thing spins out and ends up about 200 feet away. 133 00:12:24,000 --> 00:12:30,000 29% chance that it actually flies totally successfully and ends up 3,000 feet away. 134 00:12:30,000 --> 00:12:35,000 There's a 1% chance that it hits the ground and bounces right over to us. 135 00:12:35,000 --> 00:12:40,000 And with those words of wisdom, it's the bit now with the countdown. 136 00:12:40,000 --> 00:12:44,000 3, 2, 1, go! 137 00:12:48,000 --> 00:12:49,000 She's up and away! 138 00:12:54,000 --> 00:12:55,000 Congratulations, dude. 139 00:12:55,000 --> 00:12:56,000 Wow! 140 00:12:56,000 --> 00:12:57,000 You think it done, brother? 141 00:12:57,000 --> 00:13:00,000 I was afraid that it was gonna loop, but then it just got the spin. 142 00:13:00,000 --> 00:13:02,000 When the spins were keep going straight, that was great. 143 00:13:02,000 --> 00:13:10,000 Those revolutionary hail tail fins did the trick and kept the rocket on a computer-defying perfect arc. 144 00:13:11,000 --> 00:13:17,000 You see it actually go and work, especially kind of having you on the edge of your seat as you're watching it go. 145 00:13:17,000 --> 00:13:21,000 And then it just kind of homes in and does its job. 146 00:13:21,000 --> 00:13:22,000 It was cool. 147 00:13:22,000 --> 00:13:23,000 It's a cool design. 148 00:13:24,000 --> 00:13:26,000 One down, one to go. 149 00:13:26,000 --> 00:13:30,000 I got a box of rocket and I'm gonna fire it. 150 00:13:31,000 --> 00:13:34,000 Complete with its rescue robe. 151 00:13:35,000 --> 00:13:37,000 You're ready to rock and roll. 152 00:13:37,000 --> 00:13:38,000 Is that it? 153 00:13:38,000 --> 00:13:39,000 That's it. 154 00:13:39,000 --> 00:13:40,000 Is that it? 155 00:13:40,000 --> 00:13:41,000 That is it. 156 00:13:41,000 --> 00:13:42,000 Next, you push the button. 157 00:13:42,000 --> 00:13:44,000 Let's try some rockets! 158 00:13:44,000 --> 00:13:48,000 In 3, 2, 1... 159 00:13:50,000 --> 00:13:51,000 Whoa! 160 00:13:51,000 --> 00:13:53,000 We have liftoff! 161 00:13:54,000 --> 00:13:56,000 You guys all clear? 162 00:13:56,000 --> 00:13:58,000 That is cool! 163 00:13:58,000 --> 00:14:01,000 It looks like they knew what they were doing back there in the 1800s. 164 00:14:01,000 --> 00:14:02,000 They might have known what they were doing. 165 00:14:02,000 --> 00:14:03,000 Yep. 166 00:14:03,000 --> 00:14:04,000 Looked good. 167 00:14:04,000 --> 00:14:06,000 Ain't that the truth? 168 00:14:06,000 --> 00:14:08,000 Another near-perfect flight. 169 00:14:08,000 --> 00:14:14,000 The rescue robe didn't fare so well, but at least the drowning sailors would have had a spectacle to behold. 170 00:14:15,000 --> 00:14:19,000 Adam and Jamie's next task is to build the long-range rocket of the myth. 171 00:14:19,000 --> 00:14:24,000 So first, they'll need to find out how far their non-mythical missiles flew. 172 00:14:25,000 --> 00:14:28,000 I don't know, but I think that's one of the rockets. 173 00:14:28,000 --> 00:14:31,000 And judging by the size of the hole, I think it's mine. 174 00:14:31,000 --> 00:14:32,000 I don't know. 175 00:14:32,000 --> 00:14:35,000 I'm gonna see if I can feel the end of it. 176 00:14:37,000 --> 00:14:39,000 I'm still not touching anything. 177 00:14:39,000 --> 00:14:41,000 Oh, back, Ota! 178 00:14:41,000 --> 00:14:44,000 Like a miner in the gold rush, Jamie starts digging. 179 00:14:44,000 --> 00:14:46,000 And the lighter boxer rocket? 180 00:14:46,000 --> 00:14:49,000 Well, 500 yards further on. 181 00:14:54,000 --> 00:14:56,000 That's where I landed. 182 00:14:56,000 --> 00:15:00,000 I'm just terrible at judging distance from here, but I'd say it's at least a mile and a half. 183 00:15:00,000 --> 00:15:06,000 I'm gonna pace it out, calculating each of my steps as about a yard, and we'll see where I get to. 184 00:15:06,000 --> 00:15:12,000 As Adam measures his flight path, Jamie has at last struck gold. 185 00:15:12,000 --> 00:15:14,000 There she is. 186 00:15:14,000 --> 00:15:20,000 We got the end clearly exposed, and I think we should be able to tug it out with it come along pretty well, so... 187 00:15:21,000 --> 00:15:26,000 The heavy hail flew half as far and went over five feet into the ground. 188 00:15:30,000 --> 00:15:34,000 Soft to crash land in, tiring to measure. 189 00:15:34,000 --> 00:15:37,000 1,317 yards. 190 00:15:40,000 --> 00:15:41,000 I'm tired. 191 00:15:42,000 --> 00:15:51,000 The Mythbusters have successfully launched rockets that haven't been seen for 80 years, 192 00:15:51,000 --> 00:15:57,000 but now they've got to use what they learned to build the mythical 100-mile range Confederate rocket. 193 00:16:00,000 --> 00:16:09,000 Well, now we have a pretty good idea of what the standard kind of rocket that was used in the Civil War era is capable of, 194 00:16:09,000 --> 00:16:14,000 and I gotta say we've got our work cut out for us as far as this mythical rocket, 195 00:16:14,000 --> 00:16:18,000 because there's just not a whole lot of information about what it was. 196 00:16:18,000 --> 00:16:21,000 Well, you know, we start with what we've got. 197 00:16:21,000 --> 00:16:29,000 I mean, they say it was a liquid-fueled rocket, so we should talk to somebody about what kind of technologies that would make a liquid-fueled rocket they had available at the time. 198 00:16:29,000 --> 00:16:33,000 Liquid fuel? Well, that is what NASA uses. 199 00:16:33,000 --> 00:16:41,000 Of course, they had their teething problems too, but surely this technology is light years ahead of the Confederates. 200 00:16:41,000 --> 00:16:45,000 If only we had a rocket scientist. 201 00:16:45,000 --> 00:16:48,000 Hello. How are you doing, guys? 202 00:16:48,000 --> 00:16:49,000 Nice to meet you. 203 00:16:49,000 --> 00:16:51,000 So you're like a rocket scientist, right? 204 00:16:51,000 --> 00:16:56,000 Yeah, exactly. I teach the rocket propulsion class at San Diego State, and I launch my own rockets. 205 00:16:56,000 --> 00:16:59,000 Does being a rocket scientist help you pick up chicks? 206 00:16:59,000 --> 00:17:04,000 Unfortunately, in the rocket science world, there's not that many women, and they're hunted to extinction. 207 00:17:04,000 --> 00:17:07,000 Hunted to extinction. 208 00:17:07,000 --> 00:17:17,000 So have you heard this myth that the Confederate army actually built a liquid-fueled rocket that they fired from Virginia to Washington, D.C.? 209 00:17:17,000 --> 00:17:24,000 It was the beginning of the Industrial Revolution. People were doing all kinds of crazy things with steam engines and steam boats. I suppose it's possible. 210 00:17:25,000 --> 00:17:29,000 What's not possible is to understand the ensuing discussion. 211 00:17:29,000 --> 00:17:40,000 But eventually they thrashed out the characteristics of a plausible Civil War-era two-stage rocket, powered by ethanol and liquid oxygen. 212 00:17:40,000 --> 00:17:43,000 And they unearthed some interesting new data. 213 00:17:43,000 --> 00:17:53,000 This myth was supposedly made possible by Lord Kelvin, who was persuaded to make liquid oxygen 12 years before it is generally accepted that this first occurred. 214 00:17:53,000 --> 00:18:00,000 Apparently, German physicist Ernst Mock contributed a small turbine and a gyroscopic stabilizer. 215 00:18:00,000 --> 00:18:06,000 The rocket was launched from a hole in a river bank that was lined with a tube made from naval cannons. 216 00:18:06,000 --> 00:18:13,000 So here are the likely ingredients. Lord Kelvin's liquid oxygen made the rocket fuel burn. 217 00:18:13,000 --> 00:18:17,000 Ernst Mock's gyros gave it stability. 218 00:18:17,000 --> 00:18:24,000 A cannon provided the trajectory, and gun cotton made it explode out of the barrel. 219 00:18:24,000 --> 00:18:31,000 But what was the fuel? It could have been ethanol, made since ancient times by fermenting sugar. 220 00:18:31,000 --> 00:18:41,000 And it is used as a fuel. In today's environmentally conscious age, clean-burning ethanol is widely used as an additive to reduce gasoline emissions. 221 00:18:42,000 --> 00:18:50,000 Clean and green was not the aim of the Nazis when they invented their ethanol-fueled V2 rockets. 222 00:18:50,000 --> 00:18:56,000 It was an oil shortage that drove their search for an alcohol-based rocket fuel. 223 00:18:58,000 --> 00:19:05,000 Nonetheless, the V2 suggests that moonshine could have been used in the Confederate rocket. 224 00:19:06,000 --> 00:19:12,000 Next, it's Lord Kelvin's big O. Liquid oxygen is needed as the fuel oxidizer. 225 00:19:12,000 --> 00:19:16,000 Without it, the ethanol will burn only gently. 226 00:19:16,000 --> 00:19:24,000 But when it's added, the fuel is fully oxidized and virtually explodes, causing a massive amount of thrust. 227 00:19:24,000 --> 00:19:27,000 And it's down to Grant to make it. 228 00:19:28,000 --> 00:19:41,000 Well, I'm going to replicate Joseph Priestley's landmark experiment of the late 1700s, where he actually discovered oxygen using mercuric oxide, liquid mercury, a magnifying glass, and the sun. 229 00:19:41,000 --> 00:19:50,000 Before making liquid oxygen, he first has to produce oxygen gas by focusing the heat of the sun onto mercuric oxide. 230 00:19:50,000 --> 00:19:53,000 Now for the sun. 231 00:19:54,000 --> 00:19:58,000 As it heats up, oxygen gas should bubble up into the test tube. 232 00:19:59,000 --> 00:20:03,000 It's bubbling. Tiny. Still bubbling. 233 00:20:04,000 --> 00:20:07,000 It's working, but he's going to be here a while longer yet. 234 00:20:07,000 --> 00:20:13,000 And when he's got enough, like Lord Kelvin, Grant's got to liquefy it. 235 00:20:14,000 --> 00:20:20,000 Meanwhile, because the mythical rocket was fired from a naval cannon, Carrie's gone to the fort. 236 00:20:21,000 --> 00:20:25,000 So Jamie and Adam need to know what size the cannons were during the Civil War. 237 00:20:25,000 --> 00:20:29,000 So I've come here to Fort Point to do some measuring of cannons and find out. 238 00:20:29,000 --> 00:20:37,000 These measurements are key to the Mythbusters missile, because there's no written record of the dimensions of the Confederate rocket. 239 00:20:37,000 --> 00:20:40,000 Alright, that's an 11-foot link. 240 00:20:40,000 --> 00:20:47,000 Adam and Jamie do know that it was fired from a cannon, so if Carrie measures the biggest cannons from the Civil War... 241 00:20:47,000 --> 00:20:49,000 10 inches. 242 00:20:49,000 --> 00:20:53,000 Then the Mythbusters can build the biggest rocket possible. 243 00:20:53,000 --> 00:20:56,000 And they'll also have a launch tube they can replicate. 244 00:20:56,000 --> 00:20:58,000 9-foot 2 inches. 245 00:20:58,000 --> 00:21:01,000 It's another ingredient ready. 246 00:21:02,000 --> 00:21:04,000 Launch tube cannon, check. 247 00:21:04,000 --> 00:21:09,000 But the Mythbusters have made a worrying discovery about Lord Kelvin. 248 00:21:10,000 --> 00:21:24,000 Well Adam, as the Myth suggests, William Thompson, a.k.a. Lord Kelvin, did in fact live during the Civil War era, but he never claimed to have made liquid oxygen. 249 00:21:24,000 --> 00:21:29,000 And we're supposed to believe someone whose name was Thompson, but went around saying he was Lord Kelvin. 250 00:21:29,000 --> 00:21:31,000 That's Lord Kelvin, do you? 251 00:21:31,000 --> 00:21:37,000 But in 1852, he did observe that gas expanding in a vacuum decreased in temperature. 252 00:21:37,000 --> 00:21:50,000 And that discovery in turn made it possible in 1877 for two French scientists, Piquet and Calitette, I believe it was, to in fact achieve making liquid oxygen. 253 00:21:50,000 --> 00:21:57,000 Yeah, but their success was only making the tiniest little vapor of liquid oxygen for just a few seconds. 254 00:21:57,000 --> 00:22:03,000 Industrial quantities were not remotely available until the 1890s, and really until the 1900s. 255 00:22:04,000 --> 00:22:07,000 Well, that explains why Grant's been struggling so. 256 00:22:07,000 --> 00:22:14,000 Using Civil War technology, he's been trying to put his oxygen gas under so much pressure that it turns into liquid. 257 00:22:17,000 --> 00:22:19,000 That doesn't sound like 80 psi. 258 00:22:19,000 --> 00:22:22,000 But whatever he tries just ain't working. 259 00:22:22,000 --> 00:22:24,000 I've got a problem with this cylinder. 260 00:22:24,000 --> 00:22:30,000 And that's because M5, like the Civil War times, is just too warm. 261 00:22:30,000 --> 00:22:36,000 As it turns out, it's actually a critical temperature above which you can't liquefy oxygen. 262 00:22:36,000 --> 00:22:38,000 It just simply won't happen. 263 00:22:38,000 --> 00:22:42,000 That temperature is minus 118.6 degrees Celsius. 264 00:22:42,000 --> 00:22:48,000 And unfortunately in Civil War times, they didn't possess the technology to make anything nearly that cold. 265 00:22:48,000 --> 00:22:54,000 And without the liquid oxygen, the Confederate rocket myth is looking busted. 266 00:23:00,000 --> 00:23:05,000 In the American Civil War, did the Confederate Army fire a long-range missile? 267 00:23:05,000 --> 00:23:09,000 The mythbusters are trying to find out. 268 00:23:09,000 --> 00:23:14,000 But Grant has just failed to make a vital rocket ingredient. 269 00:23:14,000 --> 00:23:21,000 Well, you know, Grant's results make it pretty clear that they just did not have the ability to liquefy oxygen during the Civil War, 270 00:23:21,000 --> 00:23:28,000 which for us rules out the possibility of a liquid-fueled rocket that uses liquid fuel and a liquid oxidizer. 271 00:23:28,000 --> 00:23:30,000 I don't really know where we go from here. 272 00:23:30,000 --> 00:23:32,000 Well, I do. 273 00:23:32,000 --> 00:23:35,000 And, you know, I've been doing some reading on this. 274 00:23:35,000 --> 00:23:38,000 I think the design we should use is called a hybrid. 275 00:23:38,000 --> 00:23:40,000 The fuel is wax. 276 00:23:40,000 --> 00:23:43,000 The oxidizer that we would use would be nitrous oxide. 277 00:23:43,000 --> 00:23:48,000 The design doesn't involve any really complicated moving parts or anything. 278 00:23:48,000 --> 00:23:51,000 Number one, all those materials sound really safe to work with. 279 00:23:51,000 --> 00:23:55,000 And number two, the technology for all of them was available during the Civil War. 280 00:23:55,000 --> 00:23:57,000 That sounds like a perfect solution. 281 00:23:57,000 --> 00:24:01,000 So it's Plan B, a hybrid Confederate rocket. 282 00:24:01,000 --> 00:24:09,000 Lord Kelvin's liquid oxygen replaced with liquid nitrous oxide and the ethanol fuel by solid paraffin wax. 283 00:24:09,000 --> 00:24:12,000 It's the last chance for this myth. 284 00:24:14,000 --> 00:24:21,000 And it all depends on whether making liquid nitrous oxide using Civil War technology is even possible. 285 00:24:22,000 --> 00:24:25,000 So, Grant gets another bite at the cherry. 286 00:24:25,000 --> 00:24:32,000 But this time, in an extreme case of please don't try this at home, the recipe has been censored. 287 00:24:32,000 --> 00:24:39,000 The plan here is to heat up with a... 288 00:24:39,000 --> 00:24:43,000 That will actually produce a gas. 289 00:24:43,000 --> 00:24:47,000 We're going to run those through a... 290 00:24:48,000 --> 00:24:52,000 And at the other end should come out nitrous oxide. 291 00:24:52,000 --> 00:24:58,000 So, Grant adds some moo with some meow and starts heating. 292 00:24:58,000 --> 00:25:03,000 With the temperature creeping higher, the gas starts to bubble out. 293 00:25:06,000 --> 00:25:10,000 And Adam can't resist having a sniff. 294 00:25:17,000 --> 00:25:19,000 That burns! 295 00:25:19,000 --> 00:25:23,000 As Adam recovers, more gas bubbles through. 296 00:25:23,000 --> 00:25:25,000 But is it nitrous oxide? 297 00:25:25,000 --> 00:25:28,000 Or to use its common name, laughing gas. 298 00:25:28,000 --> 00:25:33,000 Nitrous oxide is more plausible as an oxidized... 299 00:25:33,000 --> 00:25:36,000 Nitrous oxide is more... 300 00:25:36,000 --> 00:25:38,000 I don't... 301 00:25:38,000 --> 00:25:42,000 Okay, nitrous oxide is more... 302 00:25:42,000 --> 00:25:45,000 They've clearly made laughing gas. 303 00:25:45,000 --> 00:25:48,000 But what is he trying to say? 304 00:25:48,000 --> 00:25:56,000 Nitrous oxide is more plausible as an oxidizer during the Civil War than oxygen because the pressure that you need is a lot less. 305 00:25:56,000 --> 00:26:02,000 You're looking at 50 atmospheres for nitrous oxide versus 400 for oxygen. 306 00:26:02,000 --> 00:26:06,000 So, nitrous oxide needs less pressure to be liquefied. 307 00:26:06,000 --> 00:26:10,000 And better still, it can be done at room temperature. 308 00:26:12,000 --> 00:26:15,000 A time-saving shop-bought bottle later. 309 00:26:15,000 --> 00:26:19,000 And the Confederate hybrid rocket can really happen. 310 00:26:19,000 --> 00:26:23,000 But with one final alteration. 311 00:26:23,000 --> 00:26:30,000 Adam's boxer rocket, like that of the myth, was described as a two-stager. 312 00:26:30,000 --> 00:26:33,000 But further research proved otherwise. 313 00:26:33,000 --> 00:26:35,000 And it turns out that it's a compound rocket. 314 00:26:35,000 --> 00:26:39,000 And indeed, it does not separate in the middle halfway through its ignition. 315 00:26:39,000 --> 00:26:46,000 Given that the launch was so successful, they're going to make their mythical rocket a one-stager as well. 316 00:26:46,000 --> 00:26:49,000 The final design is set. 317 00:26:49,000 --> 00:26:53,000 The rocket will be the size of the biggest cannon carry found at the fort. 318 00:26:53,000 --> 00:27:02,000 At the top, there'll be a tank full of liquid nitrous oxide joined via a release valve to a tank filled with paraffin wax. 319 00:27:02,000 --> 00:27:08,000 Upon ignition, the burning gases will burst out through a graphite nozzle. 320 00:27:10,000 --> 00:27:12,000 So, first things first. 321 00:27:12,000 --> 00:27:17,000 Jamie goes 21st century shopping for some 19th century parts. 322 00:27:20,000 --> 00:27:26,000 He's looking for some metal piping that Civil War rocketeers might have found at their local suppliers. 323 00:27:29,000 --> 00:27:35,000 They're going to make their best effort and then test it in the shop before trying to make it fly in the desert. 324 00:27:36,000 --> 00:27:39,000 I'm making the nitrous oxide tank for the rocket. 325 00:27:39,000 --> 00:27:45,000 We're using common steel plumbing pipe and fittings because that's easy and quick for us. 326 00:27:45,000 --> 00:27:49,000 And it's not too dissimilar from what they might have had at the time. 327 00:27:50,000 --> 00:27:56,000 Meanwhile, Adam's cooking up the new fuel, the paraffin wax with carbon added for an even burn. 328 00:27:58,000 --> 00:28:03,000 After it solidifies, it should fit perfectly inside the rocket. 329 00:28:04,000 --> 00:28:05,000 No leaking. 330 00:28:05,000 --> 00:28:11,000 As the testing draws nearer, for safety, the team need a rocket resistant bunker. 331 00:28:12,000 --> 00:28:15,000 Also known as a shipping container. 332 00:28:16,000 --> 00:28:18,000 Okay, we're in. 333 00:28:23,000 --> 00:28:24,000 Perfect. 334 00:28:25,000 --> 00:28:28,000 Perfect parking, but how bomb-proof is the bunker? 335 00:28:28,000 --> 00:28:29,000 There we go. 336 00:28:30,000 --> 00:28:32,000 Woo, uh-oh. 337 00:28:32,000 --> 00:28:33,000 Not very. 338 00:28:33,000 --> 00:28:36,000 A lot of daylight coming through the room. 339 00:28:36,000 --> 00:28:39,000 They've bought a holy rust bucket. 340 00:28:39,000 --> 00:28:41,000 Who cut the budget on the bunker? 341 00:28:43,000 --> 00:28:45,000 This seems like something you'd spend the extra cash on. 342 00:28:46,000 --> 00:28:48,000 Yeah, we got lives at stake. 343 00:28:48,000 --> 00:28:49,000 Is that a wasp nest? 344 00:28:51,000 --> 00:28:52,000 Yeah. 345 00:28:54,000 --> 00:28:55,000 Sweet. 346 00:28:55,000 --> 00:28:57,000 To top it off, there's wasps. 347 00:28:58,000 --> 00:28:59,000 But not for long. 348 00:29:03,000 --> 00:29:04,000 Oh, shoot. 349 00:29:04,000 --> 00:29:06,000 That was cool. 350 00:29:07,000 --> 00:29:08,000 Set a bomb off in there. 351 00:29:08,000 --> 00:29:09,000 The whole roof might go up. 352 00:29:09,000 --> 00:29:11,000 So I gotta redo the roof. 353 00:29:11,000 --> 00:29:13,000 I still gotta get the ventilation in. 354 00:29:13,000 --> 00:29:14,000 I gotta get the cinder blocks in. 355 00:29:14,000 --> 00:29:15,000 I gotta sweep this thing out. 356 00:29:15,000 --> 00:29:17,000 I mean, things are a mess. 357 00:29:18,000 --> 00:29:20,000 But hey, we're gonna have a bunker. 358 00:29:20,000 --> 00:29:22,000 As Tari slowly makes it blast-proof, 359 00:29:22,000 --> 00:29:25,000 the Mythbusters have dug up some more mythical musings. 360 00:29:30,000 --> 00:29:33,000 What factoids do you have for us today, J.B.? 361 00:29:33,000 --> 00:29:37,000 The myth specifically states that the launch took place near Richmond 362 00:29:37,000 --> 00:29:42,000 in March of 1865 and was witnessed by Jefferson Davis, 363 00:29:42,000 --> 00:29:46,000 who was the president of the Confederate States of America. 364 00:29:46,000 --> 00:29:48,000 There is an element of truth to this story. 365 00:29:48,000 --> 00:29:53,000 Jefferson Davis was, in fact, in Richmond around March of 1865. 366 00:29:53,000 --> 00:29:56,000 Well, the problem is that there is actually a very good record 367 00:29:56,000 --> 00:30:01,000 of every day of Jefferson Davis' activity during the month of March, 368 00:30:01,000 --> 00:30:05,000 and there is no mention, whatever, of any kind of a two-stage rocket. 369 00:30:05,000 --> 00:30:07,000 But maybe it was a secret launch. 370 00:30:07,000 --> 00:30:09,000 Well, there's always that. 371 00:30:12,000 --> 00:30:14,000 It's no secret launch. 372 00:30:15,000 --> 00:30:19,000 It's no secret that Tari's bunker is becoming ever more beefed up, 373 00:30:19,000 --> 00:30:23,000 and as launch nears, Adam's rocket fuel is all set. 374 00:30:24,000 --> 00:30:27,000 All right, well, the wax is cured overnight. 375 00:30:27,000 --> 00:30:29,000 Let's see what it did. 376 00:30:31,000 --> 00:30:33,000 Oh, yeah! 377 00:30:33,000 --> 00:30:35,000 It's worked perfectly. 378 00:30:38,000 --> 00:30:39,000 Yeah, I'm proud. 379 00:30:40,000 --> 00:30:42,000 And will it fit? 380 00:30:43,000 --> 00:30:45,000 Of course. 381 00:30:45,000 --> 00:30:47,000 But there's no rest for the wicked. 382 00:30:47,000 --> 00:30:50,000 Jamie gets on with sealing the rocket, 383 00:30:50,000 --> 00:30:54,000 but is slightly alarmed at how simple it all seems to be. 384 00:30:54,000 --> 00:30:57,000 It doesn't make any sense that it should be this easy. 385 00:30:57,000 --> 00:31:03,000 This is some laughing gas and some plumbing fixtures. 386 00:31:03,000 --> 00:31:06,000 And if it actually goes someplace, 387 00:31:06,000 --> 00:31:08,000 that's kind of scary. 388 00:31:09,000 --> 00:31:13,000 The mythbusters are not used to things being so painless, 389 00:31:13,000 --> 00:31:17,000 but let's not forget, it's not even past its test yet. 390 00:31:18,000 --> 00:31:20,000 Well, there she is. 391 00:31:20,000 --> 00:31:22,000 Tanks sealed. 392 00:31:22,000 --> 00:31:25,000 We have the ignition valve in place. 393 00:31:25,000 --> 00:31:27,000 We have the combustion chamber. 394 00:31:27,000 --> 00:31:30,000 They're just waiting for the graphite nozzle. 395 00:31:30,000 --> 00:31:32,000 Great! 396 00:31:32,000 --> 00:31:35,000 They're just waiting for the graphite nozzle. 397 00:31:35,000 --> 00:31:39,000 Graphite was the only thing available during the Civil War 398 00:31:39,000 --> 00:31:43,000 that could handle the crazy heat that the rocket's combustion generates. 399 00:31:43,000 --> 00:31:45,000 Oh! 400 00:31:46,000 --> 00:31:48,000 That's a rocket. 401 00:31:48,000 --> 00:31:50,000 Oh, I'm totally psyched about that. 402 00:31:51,000 --> 00:31:53,000 She's fully pried. 403 00:31:53,000 --> 00:31:55,000 With countdown just around the corner, 404 00:31:55,000 --> 00:31:57,000 it's time to take her to the bunker. 405 00:32:03,000 --> 00:32:07,000 The mythbusters are preparing to batten down the hatches 406 00:32:07,000 --> 00:32:10,000 in preparation for a big boom test. 407 00:32:12,000 --> 00:32:17,000 They've built their own Confederate rocket out of Civil War-era technologies. 408 00:32:17,000 --> 00:32:22,000 And because the desert is a long way to drive to find out the motor doesn't work, 409 00:32:22,000 --> 00:32:25,000 they're about to try it in a bunker in their shop. 410 00:32:26,000 --> 00:32:31,000 For safety, Adam secures the rocket so it will burn but not launch. 411 00:32:33,000 --> 00:32:38,000 And Jamie sets up some ventilation in case it's more of a smoke bomb. 412 00:32:39,000 --> 00:32:42,000 With everything ready, they're on to the final checks. 413 00:32:42,000 --> 00:32:44,000 Starting with the quick release, 414 00:32:44,000 --> 00:32:48,000 the valve that will open the nitrous oxide to the fuel. 415 00:32:49,000 --> 00:32:51,000 Okay, go ahead and pull. 416 00:32:51,000 --> 00:32:52,000 Cool. 417 00:32:52,000 --> 00:32:53,000 Check. 418 00:32:53,000 --> 00:32:55,000 Next test is the ignition. 419 00:32:56,000 --> 00:32:58,000 All right, Jamie, I'm ready when you are. 420 00:32:58,000 --> 00:33:02,000 Okay, and three, two, one. 421 00:33:03,000 --> 00:33:05,000 Smoking smells like, there we go. 422 00:33:05,000 --> 00:33:06,000 Check. 423 00:33:06,000 --> 00:33:08,000 Yeah, that took a second. 424 00:33:08,000 --> 00:33:13,000 It's time to vacate the bunker because the Confederate rocket is going to get fired. 425 00:33:15,000 --> 00:33:19,000 They're going to fill the top half of the rocket with liquid nitrous oxide, 426 00:33:19,000 --> 00:33:22,000 ignite the wax, and then open the quick release valve. 427 00:33:23,000 --> 00:33:24,000 There you go. 428 00:33:24,000 --> 00:33:26,000 That's what I'm talking about. 429 00:33:27,000 --> 00:33:30,000 The nitrous oxide tank should be filling up, 430 00:33:30,000 --> 00:33:33,000 but no one is quite sure whether it's working. 431 00:33:34,000 --> 00:33:35,000 I saw something drip. 432 00:33:35,000 --> 00:33:37,000 It's dripping out of the quick release. 433 00:33:37,000 --> 00:33:38,000 Oh, okay. 434 00:33:38,000 --> 00:33:39,000 So that's actually a good sign. 435 00:33:39,000 --> 00:33:42,000 Okay, well, let's kind of stand away from there, guys. 436 00:33:42,000 --> 00:33:44,000 We're getting liquid nitrous oxide. 437 00:33:46,000 --> 00:33:50,000 But 15 minutes later, and the tank is still filling up. 438 00:33:51,000 --> 00:33:52,000 Yes, this is where the danger zone happens. 439 00:33:52,000 --> 00:33:53,000 When nothing happens for a while, 440 00:33:53,000 --> 00:33:55,000 it's like, well, let's get closer. 441 00:33:55,000 --> 00:33:56,000 Let's get closer. 442 00:33:56,000 --> 00:33:57,000 Let's get closer. 443 00:33:57,000 --> 00:33:58,000 Boom! 444 00:33:58,000 --> 00:33:59,000 Whenever it's dead. 445 00:33:59,000 --> 00:34:00,000 Do you want to just go for it? 446 00:34:00,000 --> 00:34:01,000 Yeah, let's do it. 447 00:34:01,000 --> 00:34:02,000 Okay. 448 00:34:02,000 --> 00:34:04,000 They're just going to go for it. 449 00:34:04,000 --> 00:34:05,000 But for safety reasons, 450 00:34:05,000 --> 00:34:09,000 Jamie must first disconnect the nitrous oxide filler tank. 451 00:34:12,000 --> 00:34:13,000 Are you okay? 452 00:34:13,000 --> 00:34:14,000 Yeah, I knew I was going to do that. 453 00:34:14,000 --> 00:34:18,000 Next time you should say that there might be a large caboose. 454 00:34:19,000 --> 00:34:21,000 Because, like, my heart's beating, like, 455 00:34:21,000 --> 00:34:23,000 500 times a minute right now. 456 00:34:23,000 --> 00:34:26,000 Those with a weak heart or a nervous disposition 457 00:34:26,000 --> 00:34:30,000 should look away now, because it's test time. 458 00:34:30,000 --> 00:34:32,000 Okay, I'm in place, Adam. 459 00:34:32,000 --> 00:34:34,000 Fire in the hole. 460 00:34:34,000 --> 00:34:39,000 So, three, two, fans, go! 461 00:34:39,000 --> 00:34:46,000 We clearly have ignition. 462 00:34:46,000 --> 00:34:49,000 But what the hell's going on in there? 463 00:34:49,000 --> 00:34:56,000 Not so much fire in the hole as fire in the hole shop. 464 00:34:56,000 --> 00:34:59,000 The MIFBusters fire team have their work cut out. 465 00:34:59,000 --> 00:35:02,000 And what on earth must the neighbors think? 466 00:35:02,000 --> 00:35:07,000 There's more smoke than a year's worth of cigars. 467 00:35:07,000 --> 00:35:11,000 With the fire under control, the team decide to evacuate 468 00:35:11,000 --> 00:35:13,000 in case the gas is toxic. 469 00:35:13,000 --> 00:35:15,000 Hey, that worked! 470 00:35:15,000 --> 00:35:20,000 I called three, two, one, two, three, two, one, two, three, two, 471 00:35:20,000 --> 00:35:23,000 three, two, one, two, three, two, three, two, three, two, 472 00:35:23,000 --> 00:35:26,000 three, two, one, two, three, two, three, two, three, two, 473 00:35:26,000 --> 00:35:28,000 it worked! 474 00:35:28,000 --> 00:35:30,000 I called three, two, fans, go. 475 00:35:30,000 --> 00:35:32,000 I pushed the igniter. 476 00:35:32,000 --> 00:35:35,000 Jaymie pulled the fuel release, and I heard the thing catch. 477 00:35:35,000 --> 00:35:41,000 I heard it go, boom, boom, boom. 478 00:35:41,000 --> 00:35:44,000 I mean, just like exactly the way all the footage we've seen 479 00:35:44,000 --> 00:35:46,000 of liquid-fueled rockets going should sound. 480 00:35:46,000 --> 00:35:50,000 It put out a diabolical fireball outside the thing. 481 00:35:50,000 --> 00:35:52,000 Looks like it melted the ballistic glass. 482 00:35:52,000 --> 00:35:56,000 I mean, I can't wait to actually see the kind of damage it did in there. 483 00:35:57,000 --> 00:36:01,000 As the smoke begins to clear, the damage is getting easier to see. 484 00:36:01,000 --> 00:36:07,000 Their hybrid rocket has turned M5 into a scene of apocalyptic proportions. 485 00:36:12,000 --> 00:36:16,000 It's a testament to this size of the fireball and the heat that came out. 486 00:36:16,000 --> 00:36:18,000 What happened to my hovercraft? 487 00:36:18,000 --> 00:36:22,000 If it did that to the hovercraft, what was going on inside the bunker? 488 00:36:25,000 --> 00:36:30,000 Well, the heat was so great that the cameras only filmed a giant fireball. 489 00:36:31,000 --> 00:36:34,000 Until that is, they melted. 490 00:36:36,000 --> 00:36:40,000 You know, I don't mind saying that I'm suffering this in a pride here just a little bit. 491 00:36:40,000 --> 00:36:46,000 No one can dispute that through our ingenuity we have achieved a hybrid rocket 492 00:36:46,000 --> 00:36:49,000 engine in two days with just a bunch of plumbing parts. 493 00:36:49,000 --> 00:36:52,000 You mean we've achieved a hybrid rocket engine and system. 494 00:36:52,000 --> 00:36:57,000 We still have yet to put it in a sleek rocket-like exterior and build the cannon to fire it out of. 495 00:36:57,000 --> 00:37:07,000 Exactly. And there's also the problem of tackling this mythical gyroscopic stabilizing system that the myth states. 496 00:37:07,000 --> 00:37:12,000 So I'll tackle the gyroscopic stabilizer. You want to take on the body and the nose cone? 497 00:37:12,000 --> 00:37:13,000 Okay. 498 00:37:14,000 --> 00:37:19,000 After some celebratory ego massaging, the down-to-earth work continues. 499 00:37:20,000 --> 00:37:28,000 For the final refinements, Adam's making the stabilizing system that gives the rocket a smooth and accurate flight path. 500 00:37:28,000 --> 00:37:31,000 But steam-powered this ain't. 501 00:37:32,000 --> 00:37:41,000 We looked at a lot of different ways to add gyroscopic stabilization to this thing and we settled on the design that Hale used when he designed the Hale rocket, 502 00:37:41,000 --> 00:37:51,000 which was fins that affected the exhaust of the rocket only, but that exhaust being made to be rotational, added a rotational stability to the rocket itself. 503 00:37:51,000 --> 00:37:55,000 So we've tried to do the same thing with ours on a much larger scale. 504 00:37:56,000 --> 00:38:02,000 Ernst Mock and his gyro join Lord Kelvin and his liquid oxygen in the busted bin. 505 00:38:03,000 --> 00:38:10,000 Meanwhile, Jamie is making a more efficient string-pulled release valve to let the liquid nitrous oxide into the fuel tank. 506 00:38:11,000 --> 00:38:14,000 For the test, he was standing right next to the bunker. 507 00:38:15,000 --> 00:38:18,000 For the launch, he wants to be a bit further away. 508 00:38:19,000 --> 00:38:31,000 It's important that I not be very close to the rocket when the nitrous oxide is dumped into the combustion chamber when it's lit, because there will be a lot of fire and I could get burned. 509 00:38:32,000 --> 00:38:38,000 With the quick release ready and working, Jamie's rooted around the shop and come up with a naval cannon launching tune. 510 00:38:39,000 --> 00:38:45,000 It's this pipe that the rocket will be propelled out of. Courtesy of the myth's Civil War gun cotton. 511 00:38:47,000 --> 00:38:52,000 Carrie Elizabeth Byron, your mission should you choose to accept it is to make us some gun cotton. 512 00:38:53,000 --> 00:38:55,000 Great. What is it? 513 00:38:56,000 --> 00:39:01,000 Well, it's some kind of cotton and it's probably got some nasty chemical added to it. 514 00:39:01,000 --> 00:39:07,000 It's definitely going to shorten your lifespan, but we need a bunch of it. We need to figure out how to make it and get some over to us. 515 00:39:07,000 --> 00:39:09,000 Sounds like fun. 516 00:39:09,000 --> 00:39:15,000 Oh, by the way, it's quite possibly explosive when you're done making it. So, you know, be careful. Keep that in mind. 517 00:39:16,000 --> 00:39:18,000 Guys always give me the best jobs. 518 00:39:20,000 --> 00:39:27,000 Gun cotton is what apparently gave the rocket its initial thrust. It's an important but dangerous part of this myth. 519 00:39:28,000 --> 00:39:31,000 So the recipe is a myth buster secret. 520 00:39:32,000 --> 00:39:37,000 Okay, we're adding half ounce of to a half ounce of 521 00:39:39,000 --> 00:39:47,000 Slowly when you add donkey to rooster, you get a violent reaction and all that wonderful smoke cannot be good. 522 00:39:49,000 --> 00:39:51,000 So it's in with the cotton wool. 523 00:39:52,000 --> 00:39:58,000 I don't know how much I trust respirators and masks at this point. That stuff looks just disgustingly fatal. 524 00:39:58,000 --> 00:40:07,000 The rest of the fatal process is classified, but after a complicated afternoon, Carrie's gun cotton is all set for a test. 525 00:40:07,000 --> 00:40:08,000 All right. 526 00:40:11,000 --> 00:40:13,000 Three, two, one. 527 00:40:16,000 --> 00:40:17,000 Not bad. 528 00:40:17,000 --> 00:40:19,000 That makes a big difference. 529 00:40:19,000 --> 00:40:27,000 The secret recipe works. The gun cotton is remarkably energetic. But could it propel a rocket out of a cannon? 530 00:40:29,000 --> 00:40:31,000 All right, let's try it at the cannon. 531 00:40:31,000 --> 00:40:32,000 Cool. 532 00:40:32,000 --> 00:40:40,000 This is the crucial part. If the gun cotton is powerful, then they can scale this up to give the hybrid rocket its initial thrust. 533 00:40:42,000 --> 00:40:43,000 You ready? 534 00:40:43,000 --> 00:40:44,000 Okay. 535 00:40:45,000 --> 00:40:50,000 Fire in the hole in three, two, one. 536 00:40:50,000 --> 00:41:03,000 Success. And with more off it, it could just be enough to kickstart the rocket out of its naval cannon launch tube. 537 00:41:05,000 --> 00:41:11,000 The fifth and final mythical ingredient is ready. The gun cotton check. 538 00:41:12,000 --> 00:41:17,000 That just leaves the last details. First, the nose cone. 539 00:41:18,000 --> 00:41:25,000 I don't have a big enough piece of wood for the nose cone, so I'm going to lay that out of foam. I mean, we're not putting an actual warhead on this thing. 540 00:41:27,000 --> 00:41:33,000 Even the mythbusters have to draw the line somewhere. A foam nose cone will have to do. 541 00:41:35,000 --> 00:41:42,000 And second, a paint job. Looking pretty in pink, the mythbusters rocket is finally ready. 542 00:41:48,000 --> 00:41:50,000 This puppy is going to get fired. 543 00:41:56,000 --> 00:41:58,000 Oh, it's got an heavier. 544 00:41:58,000 --> 00:41:59,000 Yeah, I know. 545 00:41:59,000 --> 00:42:06,000 The mythbusters homemade Confederate rocket is about to shoot for the moon. Time to return to the desert. 546 00:42:11,000 --> 00:42:13,000 Where things have started badly. 547 00:42:14,000 --> 00:42:15,000 And we're stuck. 548 00:42:16,000 --> 00:42:22,000 But it's only the biggest vehicle in the fleet that's stuck. So we're using every other vehicle to get it out. 549 00:42:29,000 --> 00:42:34,000 Jamie drove them into this mess, so he's got to dig them out. 550 00:42:34,000 --> 00:42:37,000 What else do we have to stick under there or anything? 551 00:42:38,000 --> 00:42:43,000 But they're not having much luck. And believe me, this is not a fun place to break down. 552 00:42:44,000 --> 00:42:50,000 We're hoping to work for the morning and then go back to the hotel, have a hacienda, work later in the day so we didn't take the heat of the sun. 553 00:42:50,000 --> 00:42:53,000 But no, go ahead and pull. 554 00:42:58,000 --> 00:43:00,000 Pull, pull, come on, pull. 555 00:43:03,000 --> 00:43:07,000 At 110 degrees, reinforcements are called. 556 00:43:08,000 --> 00:43:14,000 And with some tow-track talent, she's out. 557 00:43:17,000 --> 00:43:21,000 Freed at last, Jamie swings the track around and... 558 00:43:25,000 --> 00:43:26,000 ...get stuck again. 559 00:43:27,000 --> 00:43:32,000 Is there anything I could say that would make this more poignant? I don't think so. 560 00:43:33,000 --> 00:43:41,000 Like rats in a sinking ship, the team abandon their lamentable lorry and take all their rocket equipment with them. 561 00:43:45,000 --> 00:43:51,000 After finally arriving on site, the race is on to get the rocket ready and fired. 562 00:43:52,000 --> 00:43:57,000 And to start, Adam finishes off the cannon-inspired gun barrel. 563 00:43:58,000 --> 00:44:03,000 To get the launch trajectory, Adam's attaching an A-frame to it. 564 00:44:05,000 --> 00:44:08,000 Meanwhile, Jamie's back to pulling strings. 565 00:44:09,000 --> 00:44:22,000 I've run the pull cord, which opens the nitrous valve the entire distance because I want to feel what it feels like and have somebody watching on the other end to make sure that it actually worked. 566 00:44:22,000 --> 00:44:24,000 We're ready for the test, whenever you are. 567 00:44:24,000 --> 00:44:25,000 Yo! 568 00:44:28,000 --> 00:44:29,000 Hey! 569 00:44:29,000 --> 00:44:30,000 That was it, right on the ball. 570 00:44:30,000 --> 00:44:31,000 Hey, that worked! 571 00:44:32,000 --> 00:44:38,000 With the quick release valve working from 500 feet, the team slide the rocket into the cannon. 572 00:44:39,000 --> 00:44:40,000 Favourite, the far side. 573 00:44:41,000 --> 00:44:42,000 Add the wax fuel... 574 00:44:45,000 --> 00:44:46,000 ...and then seal her up. 575 00:44:47,000 --> 00:44:50,000 Perfect, lovely, fabulous. 576 00:44:51,000 --> 00:44:53,000 Use the man, stud. 577 00:44:54,000 --> 00:44:57,000 And next up for these studs is the erection. 578 00:44:58,000 --> 00:44:59,000 There you go, Eric. 579 00:45:00,000 --> 00:45:01,000 She's nearly ready. 580 00:45:02,000 --> 00:45:03,000 You like it? 581 00:45:04,000 --> 00:45:05,000 Yeah. 582 00:45:06,000 --> 00:45:09,000 Jamie adds Carrie's gun-cotton propellant to the base of the cannon. 583 00:45:11,000 --> 00:45:16,000 And that just leaves the fuel oxidizer, the liquid nitrous oxide. 584 00:45:17,000 --> 00:45:24,000 As the team make the final preparations, it seems this hybrid rocket has come a long way from the original myth. 585 00:45:25,000 --> 00:45:28,000 So is any part of this parable actually true? 586 00:45:29,000 --> 00:45:33,000 They did have gun-cotton in 1865 and they did have steel. 587 00:45:34,000 --> 00:45:36,000 They did have nitrous oxide. 588 00:45:37,000 --> 00:45:39,000 Buying a rocket from a tube, totally plausible. 589 00:45:40,000 --> 00:45:42,000 Completely within the realm of possibility. 590 00:45:42,000 --> 00:45:44,000 Building the rocket is one thing. 591 00:45:45,000 --> 00:45:56,000 All of the processes that go into actually launching it make it, in my opinion, improbable but not impossible for them to have done in that era. 592 00:45:57,000 --> 00:46:01,000 The Civil War rocket. Improbable but not impossible. 593 00:46:02,000 --> 00:46:09,000 Sure, the mythbusters have made a few changes, but does it really stand a chance of flying the mythical 120 miles? 594 00:46:12,000 --> 00:46:14,000 Alright, here's the percentages. 595 00:46:16,000 --> 00:46:24,000 60% chance that we get a lot of flame and a lot of fuss and bother and the rocket doesn't leave the tube. 596 00:46:25,000 --> 00:46:30,000 5% chance that it blows up in the tube from too much pressure or something like that. 597 00:46:31,000 --> 00:46:32,000 What have I got left? 35? 598 00:46:33,000 --> 00:46:41,000 Yeah, I'll give a 20% chance of a successful launch and 15% chance of something I cannot even remotely predict. 599 00:46:42,000 --> 00:46:48,000 Let's find out. Adam's going to press the button, then Jamie will yank open the quick release valve. 600 00:46:50,000 --> 00:46:58,000 Alright, here goes the big boom, Civil War rocket in 3, 2, 1, ignition. 601 00:47:03,000 --> 00:47:04,000 Something's happening. 602 00:47:06,000 --> 00:47:07,000 Go! 603 00:47:12,000 --> 00:47:13,000 Wow! 604 00:47:17,000 --> 00:47:18,000 Woo! 605 00:47:19,000 --> 00:47:20,000 Yeah! 606 00:47:21,000 --> 00:47:22,000 I forgot to take a picture. 607 00:47:24,000 --> 00:47:25,000 Sir? Good job, everybody. 608 00:47:26,000 --> 00:47:27,000 Got out of the air. 609 00:47:28,000 --> 00:47:30,000 Our first hybrid rocket. 610 00:47:32,000 --> 00:47:33,000 And didn't she do well? 611 00:47:34,000 --> 00:47:39,000 It took a while for the nitrous oxide to mix with the fuel, but then she was off. 612 00:47:40,000 --> 00:47:41,000 Nice, nice work. 613 00:47:42,000 --> 00:47:43,000 Should we go find our rocket? 614 00:47:44,000 --> 00:47:45,000 Yeah. 615 00:47:46,000 --> 00:47:47,000 Is it that thing right that way? 616 00:47:48,000 --> 00:47:49,000 Okay, so I'll paste it off while we walk out. 617 00:47:52,000 --> 00:47:54,000 That was a rocket. There's no two ways about it. 618 00:47:55,000 --> 00:48:02,000 For being made out of some plumbing pipe and pipe caps, it's not half bad. That was heavy. 619 00:48:03,000 --> 00:48:07,000 It weighed over 200 pounds, but how far did it go? 620 00:48:09,000 --> 00:48:10,000 I got it! 621 00:48:14,000 --> 00:48:15,000 Here it is! 622 00:48:17,000 --> 00:48:18,000 There you go. 623 00:48:18,000 --> 00:48:19,000 One, two, three. 624 00:48:20,000 --> 00:48:25,000 Made it about 500 yards in two days. Two days, baby. 625 00:48:26,000 --> 00:48:32,000 Let anybody else do that and get something airborne like this out of plumbing parts in a visit to your local hardware store. 626 00:48:33,000 --> 00:48:34,000 A little hubris from the Heinemann. 627 00:48:35,000 --> 00:48:42,000 And rightly so. After all, they just built a rocket out of plumbing parts in 48 hours. 628 00:48:43,000 --> 00:48:44,000 Want to see it again? 629 00:48:45,000 --> 00:48:52,000 The 200-pound Civil War rocket came straight out of the barrel, but had nowhere near the thrust of modern rockets. 630 00:48:53,000 --> 00:48:57,000 A success, but still 119 miles shorter than the myth. 631 00:48:59,000 --> 00:49:01,000 So there you have it, Confederate rocket. 632 00:49:01,000 --> 00:49:03,000 Is it busted, plausible, or confirmed? 633 00:49:04,000 --> 00:49:13,000 Totally busted. We got airborne with stuff that they could have had, they could have put together, but nowhere near 120 miles. 634 00:49:14,000 --> 00:49:20,000 I agree. They had access to all this technology, but putting it all together didn't happen for another maybe even 100 years. 635 00:49:21,000 --> 00:49:24,000 We made a good effort, and I'm so glad we got a launch, but this one's busted. 636 00:49:25,000 --> 00:49:26,000 Busted. 637 00:49:31,000 --> 00:49:32,000 Busted.