Solid Rocket Booster Promontory UT 11-01
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I was bored so i thought i would share this:
Air temperature in Promontory, UT on Thursday, September 10, 2009 during this test was 73F. At this air temperature sound travels at 1131.95 feet/sec it takes 8 seconds from 0:06 to 0:14 to hear the sound of the rocket. The person filming was standing 8 x 1131.95 = 72444.8 feet away or 13.7206 miles.
2 years ago 3
All Comments (28)
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120mph
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Our exploration of space will now come to a virtual standstill until someone invents a new technique for getting into orbit!
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@malcolmyoungrocks Each SRB has a combined thrust of approximately 2,800,000 lbs at liftoff and 3,100,000 after liftoff. I believe it's 180 Dbs. I heard it on an episode of NASA Edge.
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@AtlantisB737 I dont know what makes the sound delay for about 8 seconds but if you get the sound delay and plug in the calculation were 8 seconds you should get the correct answer
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@babiker2468 it doesn´t look like 13 miles AT ALL buddy....that´s the length of a small town...I am sure those 8 seconds this guy mentions must have been 2 or 3, that´s where the mistake is...your calcs seem right. C=661.5 kts at sea level (59ºF)
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13.7 miles????? LOL you're crazy!
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The person filming was standing 8 x 343m/s = 2744 metres away or 1,715 miles ;)
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How fast is the space shuttle travelling by the time the bottom of it has left the launch pad?
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how do they hold it down ?
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I was about 1.5 miles. I forgot the exact calculations but my wife who works there would know. I am fairly certain I wasnt 13 miles however :). I figure it was a 8-9 second sound delay from ignition to when the sound reached us. My favorite is the gal in the truck @ 13 seconds
maverick18765378 2 years ago
how much thrust does that produce? and how loud is it from that distance?
malcolmyoungrocks 2 years ago
Its pretty loud although I dont know a specific db level. If you notice from the video the vertical streaks of light, its also pretty bright and somewhat difficult to stare at from where we were. From the sound delay we were a little over a mile away
maverick18765378 2 years ago
Man that is awesome! I wonder if the any of the dirt/sand/rocks in the immediate vicinity of the rocket exhaust turned into silica.
Parubhi 3 years ago 3
There is. My wife has some from another test. Its in clumps of green glass, pretty cool
maverick18765378 2 years ago