Question

Fuselage has wetted area of 20m^2. Given Aright = 5m^2. Find the value of area viewed from top.

(a) 6.8m^2

(b) 9.8m^2

(c) 6.8m

(d) 68m

The question was posed to me in an interview for internship.

The query is from Configuration Layout in portion Configuration Layout and Loft of Aircraft Design

Answer 1

Correct answer is (a) 6.8m^2

Easiest explanation: Given wetted area Aw = 20m^2, Aright = 5m^2.

Now, area vied from top A is given by,

A = 0.588*Aw – Aright = 0.588*20 – 5 = 11.764-5 = 6.764 = 6.8m^2.