Question

A. Typical aircraft will have lighter colors at lower surface.

R. The background lookup angle is sky.

(a) Both [A] and [R] are true and [R] is the correct reason for [A]

(b) Both [A] and [R] are true but [R] is not the correct reason for [A]

(c) Both [A] and [R] are false

(d) [A] is false but [R] is true

I have been asked this question in an interview.

Question is taken from Configuration Layout Considerations topic in chapter Configuration Layout Considerations of Aircraft Design

Answer 1

The correct choice is (a) Both [A] and [R] are true and [R] is the correct reason for [A]

Explanation: An aircraft will be spending major time in the sky. Hence, it is required to use lighter colors at lower surface as the background lookup angle is sky. It will reduce the contrast of an aircraft with respect to sky and will improve visual detection.