| Re: Finding DA |
Subject: Re: Finding DA by CFI-EFI on 2009/1/10 1:27:14 Actually physical altitude reading isn't part of the equation. The thinner air at higher altitudes results in lower barometric pressure. The barometer reading automatically factors in the altitude. Where I race the barometer never gets higher than 25" hg. A "standard" barometer at mean sea level is 29.92" hg. I couldn't compare my weather station with the calculations of someone else, unless we were side by side. I don't have a way to input the numbers for it to calculate. It reads the conditions and reports both the conditions and the DA simultaneously. I believe there are some systems that have instruments that take readings and gives you a calculator and a formula. The Tag and the Performaire systems figure it directly then report the results. RACE ON!!! |
