Re: [Flightgear-devel] recent environment changes break airport elevation with metar altimeter settings

2010-10-07 Thread Torsten Dreyer
After 18 minutes sitting on the runway with the altimeter setting matching the current METAR, the altimeter is still showing 100 ft too high. Questions: Q1: Since there has not been a METAR change, why is interpolation smoothing necessary at launch. Q2: The rate of interpolation

Re: [Flightgear-devel] recent environment changes break airport elevation with metar altimeter settings

2010-10-07 Thread dave perry
On 10/07/2010 11:08 AM, Torsten Dreyer wrote: After 18 minutes sitting on the runway with the altimeter setting matching the current METAR, the altimeter is still showing 100 ft too high. Questions: Q1: Since there has not been a METAR change, why is interpolation smoothing necessary at

Re: [Flightgear-devel] recent environment changes break airport elevation with metar altimeter settings

2010-10-05 Thread Torsten Dreyer
After 18 minutes sitting on the runway with the altimeter setting matching the current METAR, the altimeter is still showing 100 ft too high. Questions: Q1: Since there has not been a METAR change, why is interpolation smoothing necessary at launch. Q2: The rate of interpolation seems

Re: [Flightgear-devel] recent environment changes break airport elevation with metar altimeter settings

2010-10-04 Thread Csaba Halász
On Tue, Oct 5, 2010 at 1:28 AM, dave perry skida...@mindspring.com wrote: Before I set the altimeter to 30.35 (i.e. as launched at 29.92), the altimeter reads aprox. 643 and it noticeably  drifts down from that acceptable value. If I set the altimeter to 30.35, the altimeter reads

Re: [Flightgear-devel] recent environment changes break airport elevation with metar altimeter settings

2010-10-04 Thread dave perry
On 10/04/2010 05:54 PM, Csaba Halász wrote: On Tue, Oct 5, 2010 at 1:28 AM, dave perryskida...@mindspring.com wrote: Before I set the altimeter to 30.35 (i.e. as launched at 29.92), the altimeter reads aprox. 643 and it noticeably drifts down from that acceptable value. If I set the