Entry #828 - Random Endeavour (Sonic Boom)

[IExposeMormonism]

Pah, When I was a kid in Alamogordo c. 1960 F104's, etc would just fly low and blast the school or what ever was available. It was big and It was great. Sometimes a window broke but so what. That was all gone with in a few years:: "Environmentalists"

[Kiloueka]

Double sonic boom all the way across the sky -sobs-!!!11!!!!!one!!

[xxcessxx12345]

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.

[drgentlewolf]

I guess the shuttle would be getting slower ,as it get close to the earth..(tthe air port)

Why can we hear sonic boom ?

I think that Sonic Boom is made when something gets much more faster than sound speed.

And Why twice?? Boom No 1.Boom No2?

[chorioretinitis]

@drgentlewolf One boom for the nose, one boom for the vertical tail assy. Shuttle has funny aerodynamics :-)

[daizygrl]

I just heard the Endevour re-enrty today here in palm Beach thought my house was hit by a garbage truck. GREAT VIDEO!

[CMAPAB]

first of all the sound of two bang-bang it is the system used to open the landing gear system... because the cover made by ceramic tiles is glued in reference to proctect the space shuttle during the reentry. and tha´s was also the cause of the last disaster with the space shuttle....

[cjones93]

Wow..... talk about misinformed.

[laserfloyd]

The loud double boom is in fact a sonic boom. There are two distinct booms because of the extra large verticle stabilizer (or so I hear).

The Columbia accident was damage to the left leading wing edge RCC. There was basically a huge hole in the wing. Upon re-entry, the hot gases entered the wing and ultimately led to the vehicle breaking up.

Space travel is anything but routine.

[Darkherooftheday]

You couldn't be more wrong.

[DJKaneHtownshuffler]

i love the bang

i was there

it was awesome

hahahahahahaha i love the sonic boom im such a nerd lol

[ridedirtba]

How fast is he going when he flares on approach? Any body know?

[johnschaser]

200-300 mph

[johnschaser]

sorry 300-350 mph

[tina1110]

faster than that the sound barrier has to be at least 500mph-700mph because when it was entering they tunred off the engine and circled a few times (maybe 10) if they go that fast

[chorioretinitis]

What engine, tina1110?

[tina1110]

the engine in the shuttle

[chorioretinitis]

The shuttle doesn't use its main engine at any time after the launch. And it doesn't use its OMS engine at any time after the deorbit burn. It also doesn't circle during and after the reentry, all it does is a bunch of S-turns to dissipate forward momentum.

[tina1110]

well i learned something today... yeah i knew about the deobit burn but i didnt know that it doesnt use the OMS in space and enter the atmosphere

[chorioretinitis]

The OMS is used in space, it stands for Orbital Maneuvering System. It does all the moving from orbital insertion (OMS-1 and OMS-2 maneuvers) thru docking to deorbiting and attitude hold during early reentry. But once in atmosphere it's just gliding, no propulsive engines involved.

[tina1110]

wow now i understand much more... i never too science in collage... lol but thanks anyways

[HNDNV07]

@chorioretinitis When are the RCS thrusters used?

[chorioretinitis]

Whenever the shuttle needs to rotate. The RCS is tied to the OMS (e.g. there are RCS thrusters in the two rear OMS pods as well) and used in conjuntion with it or alone. Generally the OMS does the heavier pushing and the RCS does the finer rotation and/or linear translation (for example when docking at fractions of an inch per second).

[ridedirtba]

That's cool.

[NASA904]

Great footage of Endeavour announcing her return home. Perfect end to a great mission. They are big, heavy ladies, but they always look incredibly graceful during landing.

[androclestipster]

Astounding. LOL. Great footage.

[Jess4tvs]

Well, That's pretty cool....

[lisamp29]

where were u?

[Adam4tvs]

At the gate to get into Edwards Airforce Base. There's a little Airplane graveyard thingee. So suffice to say we knew the shuttle was coming, but were still scared shitless when it got there...

[cleats8]

Awesome.

[iambored84]

wait... where is the halo?

[spam2045]

whats that music in the background? is it from a soundtrack?

[Adam4tvs]

Fifth Element...

[woodenshews]

Wow, nice video.