I mean we never actually got told what it was but later in the conflict after we moved over the border we realised they were sonic booms possible off of American spy planes traveling at extremely high speed so fast they are gone with in a matter of seconds.
@ReadyToMealSqueal That would give away their possible presence. Could be patrolling NATO aircraft simply breaking into Mach 1 upon entering or leaving the combat zone. Or maybe even Serb planes?
on nasa tv, you only hear 2 little pops, the people standing outside their house hear holy mother of fuck big bangs...... i'd love to have hear'd them for myself, but guess i'll never get the chance :(. unless the uk starts a shuttle program , yeah right ,lol. We havnt even perfected our bus service .
@matt876mma I live in an area of Southern California where the Shuttle would fly over when it was landing here instead of Florida. The video does that double sonic boom no justice at all. In reality, it's like a cannon going off. On several rare occasions, they came in over the Pacific Ocean and directly over my neighborhood. The sonic booms were louder than thunder. You felt the concussion of the sound waves go through you. It's a wild experience.
@enigma800 When I was a small child my parents had a caravan (trailer) at a place called Heacham, Norfolk, UK and jets would go supersonic over The Wash (estuary here in the UK) and the sonic booms would move the caravan! Very exciting :-)
ummm.... if the shuttle put out two sonic booms and we can see it on screen....why then did the announcer say the speed was only 530 MPH....which is slower then sound
You hear 2 booms because you hear the bow wave (the front of the shuttle) and the tail wave (the rear of the shuttle) both front and back of the vehicle traveling at super sonic speeds create the atmospheric change in pressure that's why you have 2 booms.
All the aircraft, that are capable of breaking into Mach 1, generate twin (2) sonic booms. But sometimes a factor like the length of the particular aircraft prohibits us from hearing the both of them. Now the parts of the aircraft, that generate these shock waves are the nose and the tail. Since the distance between the tail and the nose is bigger on the Shuttles than on the fighter jets, we can hear the both sonic booms. The same was with Concorde passenger airliners.
@Lachausis I was thinking that maybe - due to interaction between the two shockwaves or a Prandtl-Meyer expansion between them - the opening angle of the two shocks might not be the same?
If you take friction into account, the rear shock wave will have a greater angle compared to the front one - might it be possible for shock wave to "cross each other"?
If this is true, the time between the two shocks will increase with the distance you are away from the passing shuttle.
@vplehweIT Hmm. I'm not specialist and I will not even pretend to be able to speculate on this matter. But we still hear only one (in reality there are two) sonic boom for combat jets, be it above the sea level or 1 km, or even a greater distance, away. The distance still hasn't helped in that case to separate both booms.
Speed of sound varies with altitude. The higher the jet, the lesser speed needed for breaking the barrier. Let's presume the Aircraft was quite high. Other thing is that the sound of sonic booms reaches our ears "delayed". So apparently when the sound reached the microphone the shuttle had already managed to drop some significant speed. Or the sonic boom was previously recorded and replayed later. Lets remember that the shuttle glides, its engines are shut down, so the speed drops faster.
I must admit that when I heard the boom and the man said "speed 530 mph", for a second I too forgot that the speed of sound varies with altitiude. We can't really tell by this video its altitude but it could very well be wayyy up there still.
man, sonic booms use to scare the shit out of me during my tour in Kosovo, you didn't see the jets but you heard the almighty bang over head...
ReadyToMealSqueal 4 months ago
@ReadyToMealSqueal I can imagine. In possible combat/conflict zone it could scare anyone. Sounds like an explosion.
Lachausis 4 months ago
@Lachausis Yeah well all thought it was serb artillery air bursting over our heads
ReadyToMealSqueal 4 months ago
I mean we never actually got told what it was but later in the conflict after we moved over the border we realised they were sonic booms possible off of American spy planes traveling at extremely high speed so fast they are gone with in a matter of seconds.
ReadyToMealSqueal 4 months ago
@ReadyToMealSqueal That would give away their possible presence. Could be patrolling NATO aircraft simply breaking into Mach 1 upon entering or leaving the combat zone. Or maybe even Serb planes?
Lachausis 4 months ago
on nasa tv, you only hear 2 little pops, the people standing outside their house hear holy mother of fuck big bangs...... i'd love to have hear'd them for myself, but guess i'll never get the chance :(. unless the uk starts a shuttle program , yeah right ,lol. We havnt even perfected our bus service .
matt876mma 7 months ago
@matt876mma I live in an area of Southern California where the Shuttle would fly over when it was landing here instead of Florida. The video does that double sonic boom no justice at all. In reality, it's like a cannon going off. On several rare occasions, they came in over the Pacific Ocean and directly over my neighborhood. The sonic booms were louder than thunder. You felt the concussion of the sound waves go through you. It's a wild experience.
enigma800 5 months ago
@enigma800 When I was a small child my parents had a caravan (trailer) at a place called Heacham, Norfolk, UK and jets would go supersonic over The Wash (estuary here in the UK) and the sonic booms would move the caravan! Very exciting :-)
Damnblastify 4 months ago
@Damnblastify That's awesome, LOL!
enigma800 4 months ago
ummm.... if the shuttle put out two sonic booms and we can see it on screen....why then did the announcer say the speed was only 530 MPH....which is slower then sound
Eagle1538 9 months ago
This comment has received too many negative votes show
FAKE & WORST OF ALL LAME !!!! THUMBS DOWN!
Zapppo 1 year ago
@Zapppo Troll. It was recorded from live stream.
Lachausis 11 months ago 7
so fake smaking table
10science 1 year ago
You hear 2 booms because you hear the bow wave (the front of the shuttle) and the tail wave (the rear of the shuttle) both front and back of the vehicle traveling at super sonic speeds create the atmospheric change in pressure that's why you have 2 booms.
xxcessxx12345 1 year ago
How come "twice"??
I see but one shuttle..
drgentlewolf 2 years ago
All the aircraft, that are capable of breaking into Mach 1, generate twin (2) sonic booms. But sometimes a factor like the length of the particular aircraft prohibits us from hearing the both of them. Now the parts of the aircraft, that generate these shock waves are the nose and the tail. Since the distance between the tail and the nose is bigger on the Shuttles than on the fighter jets, we can hear the both sonic booms. The same was with Concorde passenger airliners.
Lachausis 2 years ago 10
@Lachausis
I understood well ,thanks for givin me
a good lecture.
drgentlewolf 2 years ago
@Lachausis I was thinking that maybe - due to interaction between the two shockwaves or a Prandtl-Meyer expansion between them - the opening angle of the two shocks might not be the same?
If you take friction into account, the rear shock wave will have a greater angle compared to the front one - might it be possible for shock wave to "cross each other"?
If this is true, the time between the two shocks will increase with the distance you are away from the passing shuttle.
vplehweIT 7 months ago
@vplehweIT Hmm. I'm not specialist and I will not even pretend to be able to speculate on this matter. But we still hear only one (in reality there are two) sonic boom for combat jets, be it above the sea level or 1 km, or even a greater distance, away. The distance still hasn't helped in that case to separate both booms.
Lachausis 4 months ago
search this pdf on gogle: FS-017-DFRC
chue85 2 years ago
i think the shuttle is around 40 K feet when the it descends below mach 1
sledger25 2 years ago
sonic boom at 530 miles/h??
derTommy 3 years ago
Speed of sound varies with altitude. The higher the jet, the lesser speed needed for breaking the barrier. Let's presume the Aircraft was quite high. Other thing is that the sound of sonic booms reaches our ears "delayed". So apparently when the sound reached the microphone the shuttle had already managed to drop some significant speed. Or the sonic boom was previously recorded and replayed later. Lets remember that the shuttle glides, its engines are shut down, so the speed drops faster.
Lachausis 3 years ago
thank you for the good description :-)
derTommy 3 years ago
Hey, thanks! But I'm not specialist. You'd probably find more info on the internet :)
Lachausis 3 years ago
I must admit that when I heard the boom and the man said "speed 530 mph", for a second I too forgot that the speed of sound varies with altitiude. We can't really tell by this video its altitude but it could very well be wayyy up there still.
fassman316 2 years ago
your right though at it must have been over 20,000 feet
tina1110 3 years ago
@derTommy mach 1 no set speed: the sound barrier is relative to air density, and density changes with altitude
abhiginimav 10 months ago
cool
caitthegreat97 3 years ago