Shuttle Discovery - STS-124 Landing (Complete!)
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@aimhigh59 yes I know thanks - thats exactly the same as what I said!
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@lukedean999 Once the orbiter is down below a mach, it does not accelerate above it again. There are 2 sonic booms at that point and none after that.
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@JDolens24 Obvious really. The shuttle is completely unpowered on re-entry. No engines. It lands or it crashes. It glides down and thus has no facility to decelerate to pass through the speed of sound at circa 753mph, generating sonic booms - then accelerate up (more booms?) to be able to decelerate again to pass through twice. It uses the turn in the HAC to scrub off speed and align to land. Also see other posts on this video about the other "sonic booms".
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@lukedean999 how is it impossible????
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Its the STA or Shuttle Training Aircraft (G2)which usually flies off to the sides during landing. The STA flies weather approaches to the runway about an hour prior to landing and then flies part of the HAC before landing. Only sound the orbiter makes is rubber to concrete with some wind noise throw in.
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I think the high pitch whirring noise at 8:02 is from the brake pads on the main gear, NASA doesn't use chase planes on shuttles anymore (although they should as it looks cool)
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only wind.
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The sound at 0:20 is coming from the devices near the runway at KSC that are meant to scare birds away. You'll hear these at DCA if you've ever been to the park just north of the runway 19 threshold.
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The sonic booms are at 04:11.
It's physically impossible that there are two sessions of breaking the sound barrier c.753mph on the way in to land.
YAY! They got back safely.Great video.Thanks for posting it!
zanzibardelight 3 years ago 3