How to survive to jump from space station back to earth?

[crazyant]

I have a question since last space shuttle's part malfunction, please help me.<br />How to survive to jump from space station back to earth with minmum equipments? or there is no chance at all?<br />I guess we need <br />1. O2 tank.<br />2. Good protection from heat created by the fraction with air while entering atmosphere.<br />2. Jump at right angle, so won't be bounced back to space while entering the atmosphere.<br />3. Parachute of course.<br />4. Water if it take long time?<br /><br />Thanks<br />

 

[MeteorWayne]

1A: A spacecraft.<br />If a spacecraft with a functioning thermal protection system is place is not around you, see:<br /><br />Meteor <br /><br />Remember, you are hitting the atmosphere at a minimum of 17,000 mph, or around 4 miles a second. <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[crazyant]

Thank you very much for the link. It answered my question.<br />

 

[origin]

A fall from a stationary object may work with that moose deal, but the problem is if you bail out of the space station you will be traveling at about 17,000 miles/hr. You'll need one heluva man sized retro rocket to slow down enough to not become a really neat 'shooting star'. <div class="Discussion_UserSignature"> </div>

 

[crazyant]

So, we need a surfboard to surf on top of the air till slow enough to enter?

 

[MeteorWayne]

Which would be much longer than your lifetime <img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[crazyant]

----->Which would be much longer than your lifetime <br />Does this mean one (or more) of the following:<br />1. Cannot surf on the air too long, and will die soon.<br />2. It will never slow down.<br />3. The Atmosphere surfboard will never be created before my lifetime.<br />4. The Atmosphere surfboard make no sense.<br />

 

[3488]

Thanks shuttle_guy.<br /><br />A very interesting piece of kit. I wonder if MOOSE will be resurrected?<br /><br />An emergency return option, from Earth orbit must be considered given future long term ISS<br />habitation, etc. <br /><br />Andrew Brown. <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>

 

[Mee_n_Mac]

<br />Let me also add a THX to SG for the info. I recalled that something like that had been proposed waaay back when but I had no details on it, or knew what it was called. I wonder if the OP got the inspiration to ask his question from the proposed paper airplane experiment ? It got me to thinking if a parachute recovery, from orbit, for a spacesuited man would be (theoretically) possible. Seems at first glance it's all a matter of weight to drag ratio. <b>If</b> you could get a ginormous parachute and get it to open in freefall and w/o an atmosphere, then you could slow down high enough to avoid become one of MWs observations. <div class="Discussion_UserSignature"> <p>-----------------------------------------------------</p><p><font color="#ff0000">Ask not what your Forum Software can do do on you,</font></p><p><font color="#ff0000">Ask it to, please for the love of all that's Holy, <strong>STOP</strong> !</font></p> </div>

 

[MeteorWayne]

My comments would be that pieces of the perfomance were modeled and tested.<br /><br />However, no actual test involving deployment of the whole system from orbit was ever conducted, so we don't know if the whole moose concept would have worked.<br /><br />I would love to see a full system test with an instrumented dummy, but since it was more a concept than a system, and was abandoned years ago, there's probably nothing to test at this time.<br /><br />Interesting idea though, and I guess if it was your only shot at survival, you'd give it a shot. Again, since such a system doesn't exist, it would strictly be for future planning.<br /><br />MW <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[MeteorWayne]

If you open a giant parachute prior to interface with the atmosphere, it would be ripped to shreds in an instant, no matter what it was made of.<br />Remember your speed is over 8 km/sec.<br />The moose concept was to enter the atmosphere as a gliding body (much as the Orbiter does) and then deploy the parachute when the forces were within a survivable range.<br />That is well below 100 kft.<br /> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[3488]

Cheers MeteorWayne,<br /><br />Your posts are very interesting & clears up the MOOSE shortcomings.<br /><br />I wondered if dummy tests might have been done, using life massed & sized <br />dummies in the MOOSE?<br /><br />Apparently not.<br /><br />Andrew Brown. <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>

 

[Boris_Badenov]

6 easy steps to follow when bailing out of an orbiting vehicle;<br /><br /> 1.remain calm<br />2.remove all sharp objects from pockets<br />3.sit firmly in seat<br />4. lean forward in seat<br />5.place head between knees<br />6.kiss your ass good bye! <br /><br /><img src="/images/icons/laugh.gif" /><img src="/images/icons/laugh.gif" /><img src="/images/icons/laugh.gif" /> <div class="Discussion_UserSignature"> <font color="#993300"><span class="body"><font size="2" color="#3366ff"><div align="center">. </div><div align="center">Never roll in the mud with a pig. You'll both get dirty & the pig likes it.</div></font></span></font> </div>

 

[Mee_n_Mac]

<font color="yellow">If you open a giant parachute prior to interface with the atmosphere, it would be ripped to shreds in an instant, no matter what it was made of. <br />Remember your speed is over 8 km/sec. </font><br /><br />I hear you but ... is the atmospheric density gradient so large that there's no way a parachute could survive the gradual entry into no - /> less -> denser atmosphere ? I know ballutes have been looked into. I'm <b> guessing</b> that such things make more sense for less massive objects (? a man ?) than ... well ... large mass things like a typical capsule or such. <div class="Discussion_UserSignature"> <p>-----------------------------------------------------</p><p><font color="#ff0000">Ask not what your Forum Software can do do on you,</font></p><p><font color="#ff0000">Ask it to, please for the love of all that's Holy, <strong>STOP</strong> !</font></p> </div>

 

[usn_skwerl]

Aye, I could see deploying a chute prior to EI. I too would assume that with a chute in the thin upper atmosphere, one would be abe to slow down comfortably and significantly, kind of similar to aerobraking on Mars. I could see it taking a while to slow down to a speed where little more than a spacesuit would keep you safe, but I dunno. Maybe someone could make a SuitSat2, and attempt it. <div class="Discussion_UserSignature"> </div>

 

[SpeedFreek]

Russians keep working on "space parachute" - Dec. 14, 2004<br /><br />Extracts from that article<br /><br /><i>"Sometimes referred to as a “ballute,†or “balloon parachute,†the technology has for decades been recognized as a potential breakthrough, but sufficiently strong materials had never been available. Also, many top space program managers long felt that the idea of using a balloon instead of a heavy ceramic or metal shell as a heat shield was utter nonsense.<br /><br />“Technically, inflatables are feasible,†said retired NASA futurist Joe Loftus, who once headed the advanced planning office at Johnson Space Center in Houston. “The question is: What is it that will make them desirable?â€"<br /><br />............<br /><br />"In February 2000, a flight test of what Russian space engineers call the “space parachute†came close to success. The garbage-can-sized hardware flew as a free piggyback payload on the first orbital test of the Fregat, a new upper stage for Russia’s Soyuz rocket. After reaching orbit, the Fregat stage then dove back into the atmosphere.<br /><br />The Demonstrator-1 payload separated from the upper stage and inflated its ring of balloons. Tracked by Russian air defense radars, the vehicle descended as planned, surviving the extreme temperatures and enduring a maximum force of 15 G’s. It landed near Orenburg in the southern Urals, about 30 miles (50 kilometers) past the aim point. A secondary balloon failure left it somewhat scorched, but intact.<br /><br />As a last-minute add-on test, engineers also strapped a larger inflatable shield around the base of the Volkswagen-sized Fregat stage itself. This second unofficial test also worked, up to a point. The balloon-shielded vehicle safely passed through the atmosphere, as tracked on Russian radars, but landed far off course in a snowstorm. Months later, searchers found the crash site, but scrap metal scavengers had appa</i> <div class="Discussion_UserSignature"> <p><font color="#ff0000">_______________________________________________<br /></font><font size="2"><em>SpeedFreek</em></font> </p> </div>