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member

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I'm Laurie man and I'm bill hubscher

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welcome to focus on Marshall on today's

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program we're going to show you how this

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long tube helps us see deeper into space

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first let's stay a little closer to home

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and head over to the east text area

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where they're preparing for some testing

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to return us to the moon we're here in

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the East test area at SL 103 where

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they're preparing for some crew launch

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vehicle testing I'm here with that

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Johnson one of the test engineers out

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here tell me about the capabilities that

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we have here the test sales in general

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are set up for customers that have test

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articles that have limited thrust and

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require minimal quantities of

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propellants and in a lot of cases the

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test cells can actually be more

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affordable to our customers because

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they're easier to modify and prepare for

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tests rather than some of the larger

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facilities that we have how is this

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facility unique well in this case in

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sesa 103 what we've done is we've set up

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a test fixture specifically for this

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augmented spark igniter test project and

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it is a gaseous hydrogen gaseous oxygen

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system specifically for that testing and

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this is in preparation for the upcoming

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j-2x engine development program all

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right let's take a look at some of the

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hardware here we have a vacuum chamber

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tell me about that this is the test

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article here here this is a SME igniter

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and it's attached to a three foot vacuum

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chamber and what we're doing now is

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where we're running igniters tests and

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we're varying the altitude conditions

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using a vacuum chamber to vary the back

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pressure on the igniter and we're also

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varying the mixture ratio of the igniter

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to investigate the sensitivity of the

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igniter itself to altitude and mixture

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ratio how will this be used in the crew

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launch vehicle program well this is a

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precursor this testing is precursor for

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the j2 program right now we're going to

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we're getting up on the learning curve

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to understand to get the facility setup

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to get it operating correctly to

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understand some of these sensitivities

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that I've described earlier and we're

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preparing for the j2 hardware to arrive

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okay answer those of us who don't know

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tell me what an ignitor test is well in

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this case what we're doing is ssme

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igniter is we're varying the chamber

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pressure to simulate altitude conditions

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and we can also vary the mixture ratio

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to the igniter to investigate the

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sensitivity of the igniter to those

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conditions and that's important because

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with the j2 engine development program

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the igniter will have to be developed

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and tested and evaluated to ensure that

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it will line under the conditions

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required for flight so a lot of testing

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going on you're going to be pretty busy