You can afford to be off a couple of knots. True Airspeed Rule of Thumb: Forany altitude flown above 3,000 feet, add 3 knots per 1000′to get your (rough) true airspeed. How can I get TAS from IAS? Mathematically increase your indicated airspeed (IAS) by 2% per thousand feet of al...
The object of the work was to investigate the feasibility of using polynomial approximation techniques for the digital solution of air data formulae. Least square methods were used to obtain polynomial approximations to the air data formulae for height, Mach number, indicated airspeed and true ...