Re: [Flightgear-devel] Help request

2003-06-01 Thread David Culp
Here are some equations for calculating the pressure at a specific height: http://www.grc.nasa.gov/WWW/K-12/airplane/atmosmet.html If I read correctly, you are converting height to pressure, then to rotation. Maybe it would be easier to convert back to height first, then you can convert to

Re: [Flightgear-devel] Help request

2003-05-31 Thread Tony Peden
On Fri, 2003-05-30 at 07:25, David Megginson wrote: Jim Wilson writes: Luca Masera [EMAIL PROTECTED] said: The 2nd step doesn't work. After 1157 feet the altimeter shows 1000 and the things go worst after 5000 feets. The problem is in the rotations, I tink, but I haven't an

Re: [Flightgear-devel] Help request

2003-05-31 Thread David Megginson
Tony Peden writes: The altimeter does *not* indicate your altitude: it indicates calibrated barometric pressure. A lot of the time, the difference does not matter, as long as all aircraft are seeing the same error: for example, I was cruising at 6500 ft on Wednesday, using the proper

[Flightgear-devel] Help request

2003-05-30 Thread Luca Masera
Hi, I'm an Italian student at the University of Udine. I'm developing a freeware VRML, JAVA and Javascrpit flight simulator of the MB339-PAN but I have e great problem with the instruments (the one's that use the pressure) that's: I've created the altimeter but when I connect it to the program

Re: [Flightgear-devel] Help request

2003-05-30 Thread Jim Wilson
Luca Masera [EMAIL PROTECTED] said: The 2nd step doesn't work. After 1157 feet the altimeter shows 1000 and the things go worst after 5000 feets. The problem is in the rotations, I tink, but I haven't an interpolation of the formula that calculate the pressure. The rotations in flightgear are