Pro Member Trainee
njdevls Trainee

I was just wondering why is it that the higher you fly, the slower your speed inicator shows? The mach indiciator is till the same but the knots/hour gets lower.

3 Responses

Pro Member Site Admin
Fly Away Simulation (Flyaway) Site Admin

It's to do with the option about 'Display true airspeed' and 'Display Indicated Airspeed' in the realism settings. You can change it there 🙂

Pro Member First Officer
rob (Habu) First Officer

Hi njdevls, This is as it is in reality! Airspeed is the a product of the amt of air across the windg and sensed by a yube like the pitot tube. Therefore, the higher you go, the air is thinner and less air sensed. For example, If you were flying in the SR-71 at 80000 ft, your airspeed might be 426 knots, but your ground speed would be something like 1800-2100 miles per hr. While at sea level, a airspeed of 426 would also be a ground speed close to that! Hope this helps, rob

Pro Member Trainee
nik_simpson Trainee


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