Good for everyone concerned.
Good for everyone concerned.
Heard the 2 sonic booms as the shuttle came in, all the windows rattled like crazy. Any physics people know why there are 2 booms? They are right on top of each other.
One sonic boom is from the nose shock wave, the other is from the tail.
As the Space Shuttle re-enters the atmosphere at supersonic speeds, it creates shock waves which produce sonic booms. In fact, you'll hear not one, but two sonic booms! Because the Space Shuttle is so large (122 ft long), you will hear the sonic booms created by both the nose and tail shock waves (they occur about one-half second apart). All supersonic airplanes produce two sonic booms, but because they happen so close to each other, you hear them as one sound.
Nutter wrote:
As the Space Shuttle re-enters the atmosphere at supersonic speeds, it creates shock waves which produce sonic booms. In fact, you'll hear not one, but two sonic booms! Because the Space Shuttle is so large (122 ft long), you will hear the sonic booms created by both the nose and tail shock waves (they occur about one-half second apart). All supersonic airplanes produce two sonic booms, but because they happen so close to each other, you hear them as one sound.
I'm not judging or anything, but you copied that text directly from this Nova website:
www.pbs.org/wgbh/nova/barrier/boom/choice4.htmlH2Oh-yeah wrote:
Nutter wrote:As the Space Shuttle re-enters the atmosphere at supersonic speeds, it creates shock waves which produce sonic booms. In fact, you'll hear not one, but two sonic booms! Because the Space Shuttle is so large (122 ft long), you will hear the sonic booms created by both the nose and tail shock waves (they occur about one-half second apart). All supersonic airplanes produce two sonic booms, but because they happen so close to each other, you hear them as one sound.
I'm not judging or anything, but you copied that text directly from this Nova website:
http://www.pbs.org/wgbh/nova/barrier/boom/choice4.html
That is UNACCEPTABLE!
Thanks for the insight. They were right on top of each other. Sounded great.
Yeah, I'm an ass. Oh well.
wow, so many rocket scientists on letsrun.com and they still can\'t run 20 minutes for the 5K.
Best thread of the day
I resent that...I might be 2.5 minutes behind Bekele in the 5K, but it's not a horrible time.
NASA landed on the moon 36 yrs ago but can't perfect re-entry at this age?
they didn't land on the moon, it was a desert in mexico.
yes, yes you are correct, i am sorry. now let me tell you about the history of psychology...oh wait, never mind.