WEBVTT

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Once the whole spacecraft gets put together
it's important for us to operate it in a flight-like way.

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So we enact a policy on our missions here at JPL called "Test as you Fly."

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We say, okay, we're going to pretend that we're launching the spacecraft today
and we set the universe simulator in the clean room to pretend it's launch day.

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Juno has a very complex instrument suite.

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The instruments are tested both individually at their home institutions
as well as part of the flight system on the path towards launch.

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We try to replicate both the conditions, the timing, the personnel,
the procedures, the products, the hardware, everything

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similar to what we would have actually in space when we're flying.

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We will go through acoustic energy testing to make sure
that the instruments will be able to withstand the launch environment.

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We'll go through a thermal vac test where
we'll simulate being in a vaccuum in space.

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We pretend to fly the mission on the ground

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and then we make sure we understand the differences between
the environment we have on the ground and the environment we have in space.

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It's a blast to march through that testing suite and make sure
that you've thought of all the contingencies

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and tried to break it and make sure
it's going to do what it needs to do.