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a small scale solid rocket motor was

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successfully tested may 27 at nasa's

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the 21 second firing tested a nasa

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subscale motor designed as a versatile

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quick turnaround and low-cost way to

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determine the performance of new

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finding adequate parts replacements for

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highly reliable systems used in human

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space flight programs involves extensive

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testing and qualification efforts it

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gives engineers here at marshall

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hands-on

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experience with these materials with

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these processes of these materials so

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that we can be engaged

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in what's going on full scale

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and as well as keeping us technically

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sharp testing a subscale version of a

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rocket motor is a cost-effective way to

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assess new materials technologies or

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processes and rapidly evaluate

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so

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got it

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hey john

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and this is

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so i mean

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so

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okay

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t4

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our subscale motor is a single segment

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subscale motor it's

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the segment is 108 inches long

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and

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24 inch

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is the designation we give it because

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it's a 24 inch diameter case the nozzle

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is is in a pretty extreme environment

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it's about it sees about 5000 degrees

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fahrenheit and

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600 650 psi

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just generally

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subscale testing

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is there for

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us to use as a tool

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so that we can look at

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new materials new processing new design

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anything that changes if we come up with

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obsolescence issues

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this is a

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first look

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that that we can see what kind of effect

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they're going to have on our performance

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of our of our motors

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it gives engineers here at marshall

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hands-on

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experience with these materials with

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these processes of these materials so

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that we can be engaged

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in what's going on full scale

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and as well as keeping us technically

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sharp so that when issues come up with

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flight hardware or with our full-scale

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test programs that we're able to better

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answer questions we have the experience

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with these materials

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they've been a wonderful team to work

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with and to be able to follow the whole

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test from from the design from from

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starting the contract

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through the design through the

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manufacturing and assembly

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to the test date is very rewarding and

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now i can't wait to to see what what the

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data we get out of this and and

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which i'm positive we've got a wonderful

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test bed here

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it's very exciting it's it's a it's a

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pretty

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nerve-wracking 21 seconds

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but but it's very exciting and very

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rewarding

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for this nozzle

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we redesigned the contour of the nozzle

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to represent future full-scale motors

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and in developing that design we had to

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go through the analyses to prove that it

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would be safe to test the nozzle directs

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the

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vehicle off a pad

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our goal is to

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is to push the limits of the material

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here so that we will have safe

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full-scale tests and flight motors in

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the future our primary objectives were

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the nozzle but these tests are useful to

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pretty much everyone within solid

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propulsion

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we have on this test a

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some propellant objectives they're going

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to learn about

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cracks and and how they would how they

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would perform during a full scale motor

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and we also have some individuals taking

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some plume impingement

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measurements they're looking at the

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acoustic and vibration loads that a

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solid rocket would create on a vehicle

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as

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future heavy lift vehicles

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are developed

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we'll be able to adapt our subscale test

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to meet those designs and the material

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needs that we'll have for those vehicles

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our team was composed of young engineers

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and and experienced engineers and it

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really was a great a a great experience

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working with all of them

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as the younger engineers developed the

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hands-on experience that those that have