Touchdown Discovery! STS-121
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All Comments (26)
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Yes, the space shuttle has three Auxiliary Power Units (APUs) and they are running for the landing process in order to provide hydraulic pressure. But why that they produce this characteristic sound is something which I don't know.
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@telemetry9 No, there are other spotter aircraft flying nearby. They monitor the shuttle's descent.
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does the shuttle have power when it's landing? thought i heard engines.
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Is the squeaking/scraping noise the brakes on the shuttle?
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RIP Space Shuttles
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sweet
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its so hot u can hear the sizzling near the end
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Yes, thats the 3 APUs.
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@3qUInOc landing a flying washingmachine
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is someone jacking of at the background ??
youjustinyou 1 year ago 8
It starts sounding like a train at 1:07
TheDrunkenAviator 1 year ago 5