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quote:

Originally posted by Sunsnail shuttle launches literally bring a tear to my eye

haha. I hope to go in space atleast as a tourist in my life time.

that was totally rad

That deep impact thingie we crashed into the comet a few years ago was going like 140,000 mph when it hit.

Space shuttles are slow

you don't want the shuttle to go too fast else it'll slip out of the earth's gravity and head for the moon

question:
why do they launch straight up into the air and not take off like regular airplanes do?
Do they want to get through the atmosphere as fast a possible to reduce the stress of the heat shields?

at some point they have to escape gravity. No air up there so wings dont work

quite possibly because the vertical thrust required to put the vehicle in orbit can only be provided by very powerful rocket engines. The space shuttle was flying at 15000 miles/hr in the vertical direction just to reach a low earth orbit.

quote:

Originally posted by SuspicionVandit question: why do they launch straight up into the air and not take off like regular airplanes do? Do they want to get through the atmosphere as fast a possible to reduce the stress of the heat shields?

It would be a waste of fuel to take off like a plane. They also don't go straight up, they go at an angle

quote:

Originally posted by Orbax at some point they have to escape gravity. No air up there so wings dont work

The space shuttle never escapes earth's gravity. The escape velocity for earth is about 6.8 miles/sec. The space shuttle needs very high tangential velocity when it's circling the earth to prevent itself from falling back. This velocity needs to be given to the shuttle before it is injected into the orbit. Besides the vehicle is vertical only during launch. Immediately after launch the vehicle starts to roll and as it goes higher up into the orbit, it is actually flying like a plane with a tank attached to the bottom. The wings only help the shuttle during its landing phase when it is essentially a glider. They are possibly of no use during the liftoff and in-orbit phase.

quote:

Originally posted by SuspicionVandit question: why do they launch straight up into the air and not take off like regular airplanes do? Do they want to get through the atmosphere as fast a possible to reduce the stress of the heat shields?

shuttles don't go up 90 degrees...They actually go more like a 45 degree angle away from the direction the earth is turning.

If the earth is going clockwise, the shuttle flies both counterclockwise and upwards

I'd try to describe it better but my brain hurts now.

thats what i was saying though. even our high flying spy planes have substantial thrust power because wings dont work up there. Then add the amount of weight the shuttle is and you just cant get off the ground with all their crap.

also, its NASA, they decided on it, so its better

quote:

Originally posted by Omega_M The escape velocity for earth is about 6.8 miles/sec. The space shuttle needs very high tangential velocity when it's circling the earth to prevent itself from falling back.

ok, it's making sense now. thanks

Oh ffs i'm ten minutes late!

over an hour late actually

quote:

Originally posted by Sunsnail over an hour late actually

Shhhhh! Stop making me feel worse

quote:

Originally posted by Lilith Hasn't blow up yet

let's see an aussie space shuttle or even a commercial rocket first and then maybe we can talk about these things. yeah ?

What's with those space shuttles ? They have been flying over a couple of decades, and they never had the problems they are having now. It seems as now days they are flying to space to repair their thermal shields. I mean come on 2 times in a row ?

/rant

the space shuttle has always had problems. Parts of the shuttle were designed in a "top-bottom" manner with NASA solving issues as and when they became apparent. I read somewhere that the shuttles have flown home with problems far worse than what are being identified these days. But it takes the loss of a vehicle and the lives of a few astronauts to make the agency wake up to these risks. They have now become hyper sensitive to the tile-damage issue and repair just about any and every thing that gets brought to their attention.

What prompted stren's post? Did something happen to Endeavour?

quote:

A close-up view of the damaged tile on the underside of the Space Shuttle Endeavour during a focused inspection of the shuttle's heat shield while docked with the International Space Station August 12, 2007 in Space. The inspection was made using the shuttle's robotic arm and 50-foot-long Orbiter Boom Sensor System (OBSS).

link

I touched a tile that goes on the shuttle. Its very brittle.

quote:

Space shuttle Endeavour undocked from the international space station a day early on Sunday, as NASA kept a wary eye on Hurricane Dean. Space agency managers worried that the storm would move toward Houston and force them to evacuate to a smaller-staffed makeshift control center at Cape Canaveral, Fla. The Endeavour crew prepared to land on Tuesday as a precaution.

Hurricane Dean is making it's impact felt in space.

quote:

Originally posted by Omega_M Hurricane Dean is making it's impact felt in space.

Stupid storm!

somebody bump this on Tuesday, I wanna watch live

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