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[Music]

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there are many places we could begin a

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flight of Apollo Saturn five perhaps one

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of the best is when the 36 story tall

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Saturn 5 moves out of its huge Assembly

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Building and heads for the launch pad

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once at the pad night and day check out

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and testing go on until the final

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countdown starts in the launch control

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room the countdown continues until the

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within the first few seconds many things

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happen

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here in slow motion or two of them

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behind the yellow post

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which provides ground power swings clear

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the yellow post is one of four which

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hold the rocket until engines reach full

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power as the rocket moves up it pulls

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the cord you see allowing a protective

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higher up on the rocket another ground

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service time moves clear there are eight

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of these arms and they all have to swing

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clear of the vehicle at the same time at

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this point are about six million pounds

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are being moved straight up by sheer

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brute force

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to provide this force the five engines

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are gulping fuel at a fantastic rate a

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rate that would drain the fuel tanks of

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15 dc-8 in one minute as it flies the

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rocket is guided by an on-board computer

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a very busy computer

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during the entire fight it will make

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hundreds of millions of calculations

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from these calculations from the

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guidance command these go to the

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powerful engines which move in any

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direction to keep the rocket on the

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proper course

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these scenes were taken by a camera

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mounted on a tracking airplane

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notice how the engine exhaust balloon is

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spreading out this happens because the

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rocket is now about 40 miles up in very

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thin air

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very shortly now the bottom stage will

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drain its fuel tanks and engines shut

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off triggering a series of events

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leading to the separation and ignition

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this is a close view of the first stage

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falling away the camera is mounted on

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the second stage

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liquid hydrogen is the fuel for this

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stage and burns much cleaner than the

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high-grade kerosene used by the first

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state this is why you can't see any

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flames even though the engines are

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next the ring that connects the two

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stages falls off

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in the bottom of the picture clouds

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cover part of the Florida coast Cape

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Kennedy is about in the middle

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in a short time the rocket will be out

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of camera range but the rest of the

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flight will be similar to what you've

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already seen the second stage will drop

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away and the third stage will boost the

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payload into orbit if this were a moon

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flight a few hours later the third stage

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engine would start again and send the

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successful our Perot flights are the

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result of careful handling at every