Numbers question TAS
Mike Dwyer
We can measure our TAS at some Altitude, say 3000' and temperature say 63F, by flying in three different directions (say 0, 120, 240 degrees) and averaging the GPS reading. This would be our True Airspeed at 3000' and 63 F right? So how can we calculate our speed at sea level and 59F (standard definition)? I Googled it and came up empty. I've been using an old Cessna performance chart and eyeballing it. There must be a way to calculate it... Any math guys out there! Fly Safe, 

Larry Severson
Use your E6B (mechanical or electrical). The instruction manual will get you there.
From: QLIST@... [mailto:QLIST@...]
Sent: Tuesday, March 1, 2016 1:54 PM To: QLIST@... Subject: [QLIST] Numbers question TAS
We can measure our TAS at some Altitude, say 3000' and temperature say 63F, by flying in three different directions (say 0, 120, 240 degrees) and averaging the GPS reading. This would be our True Airspeed at 3000' and 63 F right?
So how can we calculate our speed at sea level and 59F (standard definition)? I Googled it and came up empty.
I've been using an old Cessna performance chart and eyeballing it.
There must be a way to calculate it... Any math guys out there!
Fly Safe,
Mike Dwyer N3QP Q200
YouTube Videos: https://goo.gl/yKEHfK Vimeo: http://goo.gl/bsaLsG Q200 Website: http://goo.gl/V8IrJF


Jay Scheevel
Mike,
If you fool around with the following online calculator, you can get your answer. TAS Calculator
Cheers, Jay 

Sam Hoskins
National Test Pilot School has a reliable method. Go here to read the paper and download the spreadsheet. http://www.ntps.edu/information/downloads.html My Dynon has an integrated true airspeed indicator, I think that's pretty accurate Sam Sent via wireless gizmo.


Jerry Marstall
E6B
From: QLIST@... [mailto:QLIST@...]
Sent: Tuesday, March 1, 2016 4:54 PM To: QLIST@... Subject: [QLIST] Numbers question TAS
We can measure our TAS at some Altitude, say 3000' and temperature say 63F, by flying in three different directions (say 0, 120, 240 degrees) and averaging the GPS reading. This would be our True Airspeed at 3000' and 63 F right?
So how can we calculate our speed at sea level and 59F (standard definition)? I Googled it and came up empty.
I've been using an old Cessna performance chart and eyeballing it.
There must be a way to calculate it... Any math guys out there!
Fly Safe,
Mike Dwyer N3QP Q200
YouTube Videos: https://goo.gl/yKEHfK Vimeo: http://goo.gl/bsaLsG Q200 Website: http://goo.gl/V8IrJF

