Re: [Flightgear-devel] YASim 747-400 climb performance

2002-06-02 Thread Jim Wilson
Jim Wilson [EMAIL PROTECTED] said: Andy Ross [EMAIL PROTECTED] said: Yes! That's it! Yes, I'm seeing a big difference. Andy, That sure did the trick. To make a long story short, I screwed up the update the first time (had a two year old doing some major distracting :)). The

Re: [Flightgear-devel] YASim 747-400 climb performance

2002-06-01 Thread Andy Ross
Jim Wilson wrote: David Megginson said: What happens when you reduce the fuel load? Hmmm...nothing because it won't reduce. I'm showing full 19k+ lbs for three tanks no matter what I do with the fraction figure in the config and can't dump during flight it either. Yes! That's it!

Re: [Flightgear-devel] YASim 747-400 climb performance

2002-06-01 Thread Andy Ross
I lied: There's another 747.xml file attached. Sigh... someday I'll get one of these right on the first try. Andy -- Andrew J. RossNextBus Information Systems Senior Software Engineer Emeryville, CA [EMAIL PROTECTED] http://www.nextbus.com Men go crazy in

Re: [Flightgear-devel] YASim 747-400 climb performance

2002-06-01 Thread Jim Wilson
Andy Ross [EMAIL PROTECTED] said: Yes! That's it! Yes, I'm seeing a big difference. Still maybe not quite up to spec (but don't want to say anything without doing more tests). We've gained at least 10k feet in the last week though :-) Very nice! Best, Jim

Re: [Flightgear-devel] YASim 747-400 climb performance

2002-05-31 Thread David Megginson
Andy Ross writes: First, the air pressures returned from the environment system don't agree with the standard atmosphere that YASim uses to do its calibration. They match pretty well at sea level, but diverge as altitude increase. At 35000 feet, they're too low by 20%, which is

Re: [Flightgear-devel] YASim 747-400 climb performance

2002-05-31 Thread Jim Wilson
Andy Ross [EMAIL PROTECTED] said: I'm pretty sure we're seeing the same behavior here, actually. I'll With Dave's change to prefrences.xml I can get up to FL320 before running into trouble. Really tried to go higher...no luck. take a look at the reduction in climb performance, but I'm

Re: [Flightgear-devel] YASim 747-400 climb performance

2002-05-31 Thread David Megginson
Jim Wilson writes: In any case, flying very carefully I can barely get it up to FL320 with the change in preferences.xml. Going further just doesn't seem possible. I tried serveral AoAs and just couldn't get it to go up much without falling back. What happens when you reduce the fuel

Re: [Flightgear-devel] YASim 747-400 climb performance

2002-05-31 Thread Jim Wilson
David Megginson [EMAIL PROTECTED] said: What happens when you reduce the fuel load? Hmmm...nothing because it won't reduce. I'm showing full 19k+ lbs for three tanks no matter what I do with the fraction figure in the config and can't dump during flight it either. Reducing the tank capacity

[Flightgear-devel] YASim 747-400 climb performance

2002-05-30 Thread Andy Ross
More evidence. The following quote is from an HTMLized google cache of a file named 747operations.pdf. The file itself is gone from the web, unfortunately. It appears to be a POH compiled for an MSFS virtual airline: After climbing as described above to 10,000 feet, reduce climb to 500fpm.

Re: [Flightgear-devel] YASim 747-400 climb performance

2002-05-30 Thread Jim Wilson
Andy Ross [EMAIL PROTECTED] said: The bad pilot technique theory is looking pretty good. If YASim can get to 1400fpm at 300 knots, then I move that it be declared officially innocent on all counts. :) Well maybe not yet...it is better with today's patch...but still run out of steam in the

Re: [Flightgear-devel] YASim 747-400 climb performance

2002-05-30 Thread Andy Ross
Jim Wilson wrote: Andy Ross said: The bad pilot technique theory is looking pretty good. If YASim can get to 1400fpm at 300 knots, then I move that it be declared officially innocent on all counts. :) Well maybe not yet...it is better with today's patch...but still run out of steam in