warpedskydiver 0 #1 September 17, 2009 I have not figured out the atmospheric effects on a human body falling through the atmosphere of Mars yet. But considering Olympia Mons is 27K from the floor of the Tharis, I calculated that it would take approximately 121 minutes to reach the bottom. Any thoughts? And remember only the Intergalactic Police could arrest you for it since it is beyond the jurisdiction of Earth. Quote Share this post Link to post Share on other sites
billvon 2,990 #2 September 17, 2009 >Any thoughts? With a terminal velocity of around 900 feet per second, it would be close to about 60 seconds (including time to accelerate to that speed, which would take around 45 seconds.) You'd need a rocket to stop the freefall, since a parachute that could slow you to a landing speed of even 30mph would be far too large to carry. Quote Share this post Link to post Share on other sites
warpedskydiver 0 #3 September 17, 2009 I was using 3.7m/s^2 Then considering the gravitational forces I would then calculate that terminal velocity correct? Quote Share this post Link to post Share on other sites
warpedskydiver 0 #4 September 17, 2009 Maybe jump a giant mylar wing? Something around 2000sq feet? Quote Share this post Link to post Share on other sites
warpedskydiver 0 #5 September 17, 2009 27000x3.2808/900= 98.42 Quote Share this post Link to post Share on other sites
TomAiello 26 #6 September 17, 2009 QuoteYou'd need a rocket to stop the freefall, since a parachute that could slow you to a landing speed of even 30mph would be far too large to carry. Nah. You'd just need to scratch up the sponsorship to move Jeb's giant waterslide contraption from Vegas.-- Tom Aiello Tom@SnakeRiverBASE.com SnakeRiverBASE.com Quote Share this post Link to post Share on other sites
BillyVance 34 #7 September 17, 2009 Remember that Mars doesn't have an atmosphere that resembles Earth's. It is much much thinner. I think BillVon's answer is more accurate than yours."Mediocre people don't like high achievers, and high achievers don't like mediocre people." - SIX TIME National Champion coach Nick Saban Quote Share this post Link to post Share on other sites
warpedskydiver 0 #8 September 17, 2009 I calculated for a near vacuum. It is only 5% of its atmosphere at the top, and graduating up to 0.10lbs psi at the bottom Quote Share this post Link to post Share on other sites
shaark 0 #9 September 17, 2009 >any thoughts? Down to Earth, maybe, and possibly feasible, how about a skydive from Space Ship 2? Planned max altitude is 68mls/110,000mts. Cost for one passenger:- $200,000. 6 seats available, plus two pilots. Speed at altitude will be approx mach3, so the suit used would have to take care of some friction heating, but nowhere near the heat of orbital re-entry. 6-way, anyone? Quote Share this post Link to post Share on other sites
billvon 2,990 #10 September 18, 2009 >Something around 2000sq feet? If it scales linearly (and it generally doesn't) you'd need a 37,500 sq ft parachute to give you the same sort of speed a Sabre 150 gives you here on Earth. I think the largest ram-air ever built was around 10,000 sq ft. That's one reason that the latest Mars landers don't just use parachutes; they use somewhat Rube Goldberg heatshield/parachute/winch/rocket/airbag systems. >I calculated for a near vacuum. For a true vacuum: distance = 1/2 A T^2 so for 27K ft, 20fps^2 acceleration: 52 seconds total freefall Speed at impact: 710mph Quote Share this post Link to post Share on other sites
warpedskydiver 0 #11 September 18, 2009 Quote>Something around 2000sq feet? If it scales linearly (and it generally doesn't) you'd need a 37,500 sq ft parachute to give you the same sort of speed a Sabre 150 gives you here on Earth. I think the largest ram-air ever built was around 10,000 sq ft. That's one reason that the latest Mars landers don't just use parachutes; they use somewhat Rube Goldberg heatshield/parachute/winch/rocket/airbag systems. >I calculated for a near vacuum. For a true vacuum: distance = 1/2 A T^2 so for 27K ft, 20fps^2 acceleration: 52 seconds total freefall Speed at impact: 710mph It is 27Km tall, not feet Quote Share this post Link to post Share on other sites
warpedskydiver 0 #12 September 18, 2009 Quote27000x3.2808/900= 98.42 hence this calculation notice the 3.2808*27000 Quote Share this post Link to post Share on other sites