High Speed Flight Flashcards
1
Q
Formula for Mach number
A
Speed of aircraft/ local speed of sound
2
Q
Mcrit meaning
A
Speed where supersonic airflow is first encountered
3
Q
Through the transonic range what direction does the CofP move?
A
Rearward
4
Q
What are the two types of shockwave and define them both.
A
Normal shockwave- velocity decreases below Mach 1
Oblique shockwave- velocity decreases but stays above Mach 1
5
Q
What are some design features to reduce transonic flight range effects?
A
Thin wings, sharp LE, swept wings, Area rule
6
Q
How do intakes control the BL
A
Diverters, boundary layer fence, bleed doors
7
Q
How do we control mass flow rate?
A
Aux doors open to allow more air. Spill doors open to allow air to leave
