Re: [Flightgear-devel] IRL Solo flight and Mainair Flash 2 Alpha microlight
Am Montag, den 12.03.2007, 11:48 + schrieb Stuart Buchanan: > --- Georg Vollnhals wrote: > > Hi Stuart, > > first congratulations for your first solo flight. This is a very > > interesting report, I liked to read it :-) > > Thank you. I was still grinning to myself days later. > ... and you will YEARS later. I do too and my solo (for aerodynamically controled microlight) is nearly ten years ago. > > > > > THe FDM still requires some work, but should give an idea of what > > flying a > > > flexwing is like. I'll write some pilot notes for it in the future. > > > > > > > > This would be nice, I was just guessing how the landing speed could be > > and I think I was too fast. > > And to learn to handle it similar to the "real world" flying (as far as > > possible in a sim) is something many of us want to do. > > The approach speed for a glide approach is 55 - 60mph - really a dive. The > current biggest inaccuracy in the flight model is that there isn't enough > drag (particularly at high speed), so it floats down the runway far too > much. The real aircraft bleeds off speed very fast. I've hacked the > drag_due_to_mach, but I suspect that is the wrong answer. > > If anyone has JSBSim experience and can suggest improvements, I'd be very > pleased to hear them. > I'd suggest that the control input should be reversed, because that is the biggest problem a fixed wing pilot encounters when transiting to this kind of flying. Pushing the "stick" to gain height is very unusual to us. A very pleasant aircraft! Greetings Detlef - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] IRL Solo flight and Mainair Flash 2 Alpha microlight
Hi Stuart, Congratulations! It is indeed the whitespace. I've been dealing with that too. Just change it to an underscore, and it will be fine. Stewart Stuart Buchanan wrote: >> BTW: do you know that it is only usable with FG-OSG? >> With FG-PLIB (latest CVS) I get these errors: >> >> WARNING: ac_to_gl: Can't parse this MATERIAL: >> WARNING: ac_to_gl: MATERIAL "Pink Fairing" rgb 1 0.27451 0.65098 amb 0.5 >> 0.5 0.5 emis 0 0 0 spec 0.601071 0.601071 0.601071 shi 32 trans 0 > > I will investigate. I wonder if the cause is the whitespace in the > material name. - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] IRL Solo flight and Mainair Flash 2 Alpha microlight
--- Georg Vollnhals wrote: > Hi Stuart, > first congratulations for your first solo flight. This is a very > interesting report, I liked to read it :-) Thank you. I was still grinning to myself days later. > > THe FDM still requires some work, but should give an idea of what > flying a > > flexwing is like. I'll write some pilot notes for it in the future. > > > > > This would be nice, I was just guessing how the landing speed could be > and I think I was too fast. > And to learn to handle it similar to the "real world" flying (as far as > possible in a sim) is something many of us want to do. The approach speed for a glide approach is 55 - 60mph - really a dive. The current biggest inaccuracy in the flight model is that there isn't enough drag (particularly at high speed), so it floats down the runway far too much. The real aircraft bleeds off speed very fast. I've hacked the drag_due_to_mach, but I suspect that is the wrong answer. If anyone has JSBSim experience and can suggest improvements, I'd be very pleased to hear them. > BTW: do you know that it is only usable with FG-OSG? > With FG-PLIB (latest CVS) I get these errors: > > WARNING: ac_to_gl: Can't parse this MATERIAL: > WARNING: ac_to_gl: MATERIAL "Pink Fairing" rgb 1 0.27451 0.65098 amb 0.5 > 0.5 0.5 emis 0 0 0 spec 0.601071 0.601071 0.601071 shi 32 trans 0 I will investigate. I wonder if the cause is the whitespace in the material name. -Stuart ___ New Yahoo! Mail is the ultimate force in competitive emailing. Find out more at the Yahoo! Mail Championships. Plus: play games and win prizes. http://uk.rd.yahoo.com/evt=44106/*http://mail.yahoo.net/uk - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] IRL Solo flight and Mainair Flash 2 Alpha microlight
Stuart Buchanan schrieb: > Hi All, > > On Wednesday evening I flew solo in my microlight for the first time. In > the tradition of FG RL flying posts, here's a quick description. > > > Hi Stuart, first congratulations for your first solo flight. This is a very interesting report, I liked to read it :-) > I've also been working on a FG model of my microlight, a Mainair Flash 2 > Alpha flexwing. > > It's available for download from > > http://www.nanjika.co.uk/flightgear/flash2a.tar.gz > Thank you very much for this nice model which closes the gap we have (had) for micro-/ultralight a/c in FlightGear. It is a joy for scenery exploration, slow and stable to fly. > The model is fairly accurate - though missing an EGT gauge at the moment. > THe FDM still requires some work, but should give an idea of what flying a > flexwing is like. I'll write some pilot notes for it in the future. > > This would be nice, I was just guessing how the landing speed could be and I think I was too fast. And to learn to handle it similar to the "real world" flying (as far as possible in a sim) is something many of us want to do. Georg EDDW BTW: do you know that it is only usable with FG-OSG? With FG-PLIB (latest CVS) I get these errors: WARNING: ac_to_gl: Can't parse this MATERIAL: WARNING: ac_to_gl: MATERIAL "Pink Fairing" rgb 1 0.27451 0.65098 amb 0.5 0.5 0.5 emis 0 0 0 spec 0.601071 0.601071 0.601071 shi 32 trans 0 - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
[Flightgear-devel] IRL Solo flight and Mainair Flash 2 Alpha microlight
Hi All, On Wednesday evening I flew solo in my microlight for the first time. In the tradition of FG RL flying posts, here's a quick description. The weather in Scotland the last couple of months has been somewhat challenging for learning to fly, particularly in a microlight which cannot handle high winds as well as a GA aircraft. The headwind limit on my machine is about 25mph, and the crosswind limit is a 6mph! I had a lesson booked for Tuesday afternoon, but it was cancelled due to high winds. However, on Wednesday morning, my instructor phoned to ask if I would like to fly. He didn't have any students booked for the entire day and the weather looked good. Luckily my work is very flexible, and I was able to take the day off at zero notice and go out to the airfield for the day. I didn't have any expectation that I might solo, just that I'd get a couple of hours flying in. After two hours of circuit-bashing and EFIC training (engine failure in the circuit) it was 4:30pm and George (my instructor) suggested we wait for half and hour to see if the wind would die down. After another 40 minutes of flying, during which he switched off the engine completely (!) part way through the circuit to test me, he asked me to taxi back to the hangar, got out and asked me if I was ready to solo! GULP I was pretty nervous to begin with, and I had a complete mind blank as I began my start-up checks. I couldn't remember what "S" in STAMP stood for! (the answer is Security). However, once I was over that hurdle, I calmed down, completely my checklists, and was shortly at the start of runway 29, lined up and ready to go. I smoothly floored the throttle (which is ounted like a car accelerator) and G-MWLX lept into the air! Even with the ballast bag, the lack of a passenger meant that the climb angle was much greater than I had experience before, and I had to pull back on the bar for the entire climb-out just to keep the nose angle reasonable. Even so, I was at circuit height before I made the turn to crosswind - way earlier than usual. The circuit was normal, by as I got below 100ft, I got hit by a bit of turbulence, decided I didn't like it and went around. Second time around I was in a much better position and managed a pretty good landing. Big grins all round! So, quite a big log-book entry for the day - 2h40 duel instruction, 0h20 solo. Such a lot of instruction in a single day is very unusual, and when the day finally caught up with me later, I was completely knackered. Not enough to miss out on a couple of beers later that night though! I've also been working on a FG model of my microlight, a Mainair Flash 2 Alpha flexwing. It's available for download from http://www.nanjika.co.uk/flightgear/flash2a.tar.gz The model is fairly accurate - though missing an EGT gauge at the moment. THe FDM still requires some work, but should give an idea of what flying a flexwing is like. I'll write some pilot notes for it in the future. Could someone please commit it to CVS? Thanks -Stuart ___ What kind of emailer are you? Find out today - get a free analysis of your email personality. Take the quiz at the Yahoo! Mail Championship. http://uk.rd.yahoo.com/evt=44106/*http://mail.yahoo.net/uk - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
