Re: [Flightgear-devel] YASim and the atmosphere

2002-06-06 Thread Derrell . Lipman
Andy Ross [EMAIL PROTECTED] writes: David Megginson wrote: 1. Sea level 35degC, 28.5inHG 2. Sea level -25degC, 32inHG The density altitude difference (a butchered term -- the density altitude that corresponds to the same ratio vs. standard sea level conditions) that this corresponds to

Re: [Flightgear-devel] YASim and the atmosphere

2002-06-05 Thread Andy Ross
David Megginson wrote: Since YASim uses the atmosphere model from FGEnvironment (in JSBSim, it's always 15degC and 29.92inHG at sea level), I tried some experiments with different settings from KSFO: Heh, I can just (barely) imaging a day in the Bay Area that peaks around 95F. But the

Re: [Flightgear-devel] YASim and the atmosphere

2002-06-05 Thread David Megginson
Andy Ross writes: No, YASim queries only for the pressure and temperature -- it calculates the density for itself. So whatever bugs there are lie in these two numbers only. FGEnvironment is now (as of a few minutes ago) calculating density from pressure, temperature, *and* humidity