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so understanding how vehicles behave

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during atmospheric re-entry will help

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give future spacecraft developers some

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unique information that can enhance

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their design efficiencies and safety

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one experiment that has had three

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successful flights to gather this never

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before collected information uh why

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don't we join lori meigs now out at the

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payload operations integration center at

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the marshall space flight center in

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huntsville alabama to learn more about

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the re-entry breakup recorder lori

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it's a wild ride for the re-entry

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breakup recorder but an important one it

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tests a system that rides a space

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vehicle then records data as it

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re-enters the atmosphere and breaks up

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and then it returns that data for

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analysis we spoke with andrew feistel

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from the aerospace corporation to find

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out more about this first of its kind

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we care about

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attaining reentry breakup data because

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there have been observational campaigns

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in the past that are watching re-entries

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from cameras kind of high-level

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things we could pull from that data but

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there's a real lack of real

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precise detailed real-time data that

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comes from the re-entering vehicle

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during that re-entry time frame

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that data is the data that

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reaver is recording and transmitting

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back to us how is it transmitted back to

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you if this is breaking up it is

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essentially

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a

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system

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and it does this all while still falling

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to the ground there's only a few minutes

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we have of data communication time but

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we get all of the data that we need that

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is essential about that initial reentry

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breakup process

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and

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comes to us on a website

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how many times have you flown this

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re-entry recorder there have been four

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flights all courtesy of iss resupply

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craft

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three of the four flights were

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successful

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don't know why

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never made the phone call but the three

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that were successful

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gave

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data such as temperature pressures

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rotation rates

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accelerations about the host vehicle

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that are helping us better define the

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survivability of future re-entering

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space vehicles

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so that is the goal to to find out

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how to to better our current models

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that are predicting survivability of

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space vehicles re-entering space

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vehicles what are you learning from the

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data

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well one of the main things we're

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learning from the data is is kind of

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these high-level altitude

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regions of which significant events are

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happening and we're seeing at least with

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these

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returned data

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the major significant breakup events

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tend to be happening about 74 to 70

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kilometers i call that out specifically

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because there's a historical 78

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kilometers that is used somewhat as an

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input to a lot of current modeling

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simulations and the

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the specific altitude that the breakup

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event occurs

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has a huge impact on the footprint the

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debris field when it goes down all the

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way to the ground

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i'm kind of like a shotgun the closer or

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further away from you the faster it will

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disperse

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the first data ever recorded during the

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breakup re-entry occurred on jax's htv-2

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vehicle after it departed the station

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now the data returned by river has

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helped calibrate re-entry breakup and

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re-entry hazard prediction models