Question

Typical fighter is designed to operate at high angle of attack. Estimate the range of required boundary layer diverter thickness if fuselage length in front of the inlet is 10 unit.

(a) 0.1 unit to 0.3 unit

(b) 0.01 unit to 0.09 unit

(c) 0.8 unit

(d) 2.34 to 3.24 unit

I have been asked this question in a national level competition.

I'm obligated to ask this question of Propulsion topic in portion Propulsion and Fuel System Integration of Aircraft Design

Answer 1

Right option is (a) 0.1 unit to 0.3 unit

The explanation: Given, length l = 10 unit.

Typical boundary layer diverter thickness = 1% to 3% of length

= 1% of (10) to 3% of (10)

= 0.1 unit to 0.3 unit.