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jeeshyy
2009-Jan-21, 11:54 PM
lets assume someone wants to fly into earth's atmosphere without a ship. so imagine you are stranded in space and you have the space suit on, and a parachute. Is it possible to reenter earth? or is the speed required to reenter so great that you would simply burn up in the reentry? just wondering if this COULD become one of those "extreme" sports.

Nowhere Man
2009-Jan-22, 12:19 AM
If you're coming down from orbit, you're toast. You're moving too fast. Likewise if you're falling from (say) the moon. On the other hand, if you bailed out of SpaceShipOne at the high point, you might survive.

Fred

Jens
2009-Jan-22, 01:41 AM
I think the simple answer is that it depends on what you mean by "space suit". It would certainly be possible, as long as the space suit is strong enough. Which basically means it has to have a heat shield, etc., so the difference between a "space suit" and "capsule" becomes somewhat blurred.

Grashtel
2009-Jan-22, 02:07 AM
lets assume someone wants to fly into earth's atmosphere without a ship. so imagine you are stranded in space and you have the space suit on, and a parachute. Is it possible to reenter earth? or is the speed required to reenter so great that you would simply burn up in the reentry? just wondering if this COULD become one of those "extreme" sports.
As people have said with a straight space suit and parachute you'd be toast. Adding extra equipment like a MOOSE (http://en.wikipedia.org/wiki/MOOSE) type system or replacing the parachute with a Paracone (http://www.astronautix.com/craft/paracone.htm) then it becomes possible as an extreme sport, though it would need major R&D work and be dangerous at best.

astromark
2009-Jan-22, 07:39 AM
Its been said but i wish to expand a little... Its your velocity through the air that is the problem. If you are in orbit or just nearly, you are in deep 'do do's..' even dropping in from deeper space with no orbital velocity does not rule out a burn up. I seem to recall that a sky diver reaches terminal velocity, in the atmosphere its about 260 km/hr. Go up through the atmosphere and that velocity goes up as there's no resistance., or a lot less. Some other method to slow your descent would not be impossible. Air breaks, a wing, a shield, a cone, a shuttle,...or a re-entry capsule. Remembering that 'Hancock' and that 'Tin-man' were not real.
In summery I wish to add. Us human beings would seem best equipped to live on the surface of the temperate zones of planet Earth. Not thousands of feet above it or in the depth of the oceans deep. Those places are very hostile and great care needs to be taken if stepping off our safe zone is your intention.

joema
2009-Jan-22, 01:17 PM
lets assume someone wants to fly into earth's atmosphere without a ship. so imagine you are stranded in space and you have the space suit on, and a parachute. Is it possible to reenter earth?..
With a regular space suit and regular parachute, you'd be dead.

However as discussed in the below thread, it's theoretically possible parachute-like devices could allow a space-suited astronaut to survive reentry.

http://www.bautforum.com/space-astronomy-questions-answers/69931-more-about-objects-re-entering-atmosphere.html#post1166894

The Russians are experimenting with devices they call "space parachutes": http://www.msnbc.msn.com/id/6714639/

Nick Theodorakis
2009-Jan-22, 05:56 PM
Maybe if you wore blue tights and a red cape. :lol:

Nick

mugaliens
2009-Jan-22, 06:14 PM
As people have said with a straight space suit and parachute you'd be toast. Adding extra equipment like a MOOSE (http://en.wikipedia.org/wiki/MOOSE) type system or replacing the parachute with a Paracone (http://www.astronautix.com/craft/paracone.htm) then it becomes possible as an extreme sport, though it would need major R&D work and be dangerous at best.

A paracone! Now that's what I'm talking about!

astromark
2009-Jan-22, 06:25 PM
A paracone! Now that's what I'm talking about!


What is it with the extreme sportsman mentality...?
Whats that ? A shooting star ... No. Oh its just another idiot re-entering the atmosphere.
The point I would make is that the Russian idea is a survival mechanism not a sport.

RalofTyr
2009-Jan-22, 08:08 PM
You'd need a space suit and a parachute, or mastery of anti-gravity to survive.

If you could slow your orbit down enough so you don't have such a high velocity, you won't burn up.

captain swoop
2009-Jan-22, 09:12 PM
To paraphrase Douglas Adams 'It's not a matter of who's habitat it is, it's a matter of how fast you hit it.'
:)

jeeshyy
2009-Jan-22, 11:39 PM
Thanks a lot guys. i was watching planet earth and they went to a shot of the earth and i just imagined being up there with no one around, and you look down and see the huge planet, and i imagined you bringing yourself back in. it's a scary thought, but could be fun.