he has been at Kingaroy but back to Bundy for a few days to check on the fish mob 0427378027 Ian M
2008/10/9 Mark Fisher <[EMAIL PROTECTED]> > Does anyone have contact details for Bill Hatfield?? > > Cheers > Mark > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Gary > Stevenson > Sent: Monday, 15 September 2008 9:00 PM > To: Discussion of issues relating to Soaring in Australia.; > [EMAIL PROTECTED] > Subject: Re: [Aus-soaring] Flying on Mars > > How did that post from an earlier SF thread on this forum ("Dancers at > the > End of Time") go -"Feekit"? > Gary > ----- Original Message ----- > From: "Texler, Michael" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]>; "Discussion of issues relating to Soaring > in > Australia." <aus-soaring@lists.internode.on.net> > Sent: Monday, September 15, 2008 11:47 AM > Subject: [Aus-soaring] Flying on Mars > > > >I have done some flying on Mars. > > > > Pretend, anyway. > > > > I have X-plane 9 on my Mac at home, part of the flight sim is the > ability > > to fly on Mars (with Martian elevation data and terrain to boot). > > > > The main canyon (Valles Marineris) is up to 7km (almost 23,000') deep > > > > Olympus Mons is 27km (88,500') above the mean surface level. > > > > Hence the variation in air density between those two places is huge. > > > > It is very tricky to fly. > > > > The air at mean Martian surface is about 1% as dense as Earth's at see > > > level. The gravity is also less than on Earth. > > > > Even taking off from the bottom of the canyon, your indicated stall > speed > > and Vne are very close together (i.e. you are in 'coffin corner' for > most > > of the time). > > > > Your take off speed is very near the speed of sound. > > > > Because of the reduced air density, control effectiveness is very much > > > reduced, so turning is a slow process. Also, on approach to land, and > drag > > producing devices (drogue chute, airbrakes, flaps) don't work very > well, > > because of the thin air. > > > > Even slowing down once on the ground is tricky, because of the reduced > > > gravity, the weight of the aircraft on the wheels is less. About the > only > > way you can stop is with arrestor cables. > > > > Have managed to take off from the plain next to Olympus Mons and climb > to > > the top of Olympus Mons, but it took several attempts because the > aircraft > > couldn't out climb the terrain. > > > > I suspect thermalling on Mars might be out.... > > (Unless you are very very small) > > > > _______________________________________________ > > Aus-soaring mailing list > > Aus-soaring@lists.internode.on.net > > To check or change subscription details, visit: > > http://lists.internode.on.net/mailman/listinfo/aus-soaring > > > > > > > ------------------------------------------------------------------------ > -------- > > > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.169 / Virus Database: 270.6.21/1671 - Release Date: > 9/14/2008 > 7:16 AM > > _______________________________________________ > Aus-soaring mailing list > Aus-soaring@lists.internode.on.net > To check or change subscription details, visit: > http://lists.internode.on.net/mailman/listinfo/aus-soaring > > > > _______________________________________________ > Aus-soaring mailing list > Aus-soaring@lists.internode.on.net > To check or change subscription details, visit: > http://lists.internode.on.net/mailman/listinfo/aus-soaring >
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