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I'm Lori Meggs and I'm bill hubscher

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welcome to focus on Marshall our mission

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is to give you a glimpse into the mini

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labs and test facilities that make up

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the Marshall Space Flight Center at

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Marshall we have the expertise and

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capabilities to make it all happen from

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labs to groundwork to fly today we're at

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the East test area where they have a

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variety of test stands and test cells

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primarily used for propulsion research

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and verification as a matter of fact

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they're preparing for one-tenth scale

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solid rocket motor firing right now

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let's go check it out we're here with

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Kylie kellett in the test firing control

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room hi kaali thanks for being with us

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today tell me what's going on here in

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the testing area today we're firing

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eight subscales solid rocket motor in

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support of the reusable solid rocket

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motors it launches a shuttle and this is

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just one test that's done in this area

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right in the test area yes we support

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many different types of tests we do how

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to do tests with vacuum chambers we do

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cold flow component tests with either

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ambient or cryogenic fluids and gases we

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do hot fires with full vehicle fuel

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systems and the engines what we do

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combustion device which is a component

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level of those things plus we support

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the solid rocket motor so a lot of

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capabilities let's talk about the test

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in particular today tell me about what

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all these people here doing okay steve

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allen's and i kind of run this list

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together this is a testy test conductors

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station he has the test procedure he

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gives instructions when it's appropriate

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max the appropriate checks and then

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gives instructions and the test

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procedures would go gets to push the

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button that brings us to the control

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station here these people are in control

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of everything that happens all the

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valves all the signals all the triggers

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they won't let us engineers push the

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button the controlled people like to

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keep that to themselves Greg Wirt my man

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here he's my button pusher um and which

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button is it exactly

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oh it says fire too I would know exactly

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what to punch as we get ready for this

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solid rocket motor test today the one

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question that i have is are we safe in

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this building tell me about this

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building sure if you look at the walls

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around us you notice a very small

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windows there about eight inches thick

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for lack of a better term bulletproof

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glass the walls and says are 18 inches

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thick reinforced concrete it will stand

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for psi pounds per square inch over

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pressure which is like a bomb goes off

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outside without effect inside so that's

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why this we call the blockhouse why it's

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very expensive the bill but is necessary

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to meet safety requirements ok anything

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else wanna tell us I'm just not you've

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got a very well alright well can push

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then take us down and show us what's

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starting here what is it sir okay this

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shop there's a nozzle can swing around

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Levin that's a nozzle which is just a

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way to control the point

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flame coming out and that's a heat

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shield we don't really care about the

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nozzle on this motor

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the heat shield merely for catch the

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instrumentation on the dome that's where

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those four three candidate materials in

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the one baseline material are insulating

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the inside you can play my off the metal

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to support that test

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we have two lengths of motor which gives

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a long scholar l / d length / diameter

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of the more of the propellant versus the

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link so more length in a fixed nozzle

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means our thrust and or longer duration

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depending on a match the two together so

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sometimes we do a single link in this

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case we did a double in what says we

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have further down here no this is one of

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the actual test facility you're right

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this is obviously for the length of the

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propellant other players the red is ours

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this is thrust measurement right here we

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have three load cells when this fires

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and pushes this way we can tell how hard

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it pushes so this is kind of a versatile

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test and we may fire the hope to fire

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the crew escape motor is sort of round

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and sort of long it kind of fits so

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we're ninety-five percent ready to test

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it as we're configured we'll just have

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to let Arthur and way to me for a while

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while we do that something tells me

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we'll be back out here to visit you

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again with it would that goes oh and I'd

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be great okay thanks a lot for having us

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out here it was a blast okay so to speak