Locking up the shop and heard a tremedous BOOM that rattled the whole shop. Went outside and the people in the building down from me were all out looking around also. Got home and the 'ol lady said it was just as loud there...ten miles away...it was the SHUTTLE coming in! Jeff, you are the resident shuttle expert, how come that never happend here before?? Studebaker George
Because they were not sure up to the last minute whether they would land at KSC or Edwards, or even White Sands. The trajectory took it right over New Orleans, Pensacola, Tallahassee (hello? boomBOOM!) Most other times it comes in farther north of you, or in off the gulf. Imagine that as a wake up call when they come home at 4am.. Jeff
"Studebaker George" wrote...
I also remember that (while living in Simi Valley Ca.) when the Shuttle landed at Edwards AFB. The double sonic boom was LOUD! and rattled the house.
Jim
Like Jim said, it is a double boom here in Califorina. Was it a double boom there? I'm about 60 air miles from Edwards Air Force base. One time I actually spotted the shuttle as it passed over. Just a tiny dot in the sky.
In reality, it is a double boom (BOOM-boom) The sound wave compression is heard first from the nose of the vehicle, and then again from the tail end of the vehicle as the pressure wave collapses behind it. Sometimes, depending on the vehicle orientation to your listening site, and the atmospheric conditions, the two sound pressure waves can be quite close together, so it might sound just like one boom. (For example... If the vehicle is trasnversing at a right angle to you where the entire length of the vehicle is perpendicular to you, then the pressure waves would be a hundred feet or so apart. But if the vehicle was heading right toward you, the pressure waves would be very close together. The shuttle was heading downhill in a big hurry when it went past Tallahassee, so the pressure waves might have been close together. When I lived in Ocala, it was quite loud, as they were only about 75 miles from KSC, but they carry a lot of velocity until right before landing, when they bank around real hard to bleed off energy. Tallahassee is about 260 miles from KSC, as the crow flies. Jeff
"Studebaker George" wrote...
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