Flight equations

Question 1

Equation for true airspeed

Answer 1

Vt = M * rt(gammaRaTs)

• gamma = 1.4
• Ra = 287.0529

Question 2

Air density ratio

Answer 2

(ro/roO) = (Ps/Po)*(To/Ts)

Question 3

Air density equation

Answer 3

ro= Ps/Ra*Ts

Question 4

below what height is the troposphere region

Answer 4

11,000m (36,089ft)

Question 5

what equation relates height to temperature in the troposhpere region

Answer 5

H= (To-Ts)/Lt
=Lt = troposphere lapse rate = 6.5x10^-3

Question 6

given the equation for impact pressure in the exam, what is it equal to

Answer 6

Pt - Ps

=Pt = total pressure

Question 7

ratio between total pressure and static pressure is given by

Answer 7

Pt/Ps = [1 + ((gamma - 1)/2)*M^2]^(gamma/gamma-1)

Question 8

what is the temperature in the stratosphere

Answer 8

same temperature as the troposphere pause height at 11,000 m = 216.65

Question 9

temperature at tropopause height

Answer 9

216.65

Question 10

value of Ao

Answer 10

340.3