Question

A wing has chord of 1m. Find the appropriate range of the front spar position from l.e.

(a) 0.2m-0.3m

(b) 0.9m-1.5m

(c) 3.2

(d) 1.2

I got this question in an interview.

My question comes from Configuration Layout topic in division Configuration Layout Considerations of Aircraft Design

Answer 1

Right answer is (a) 0.2m-0.3m

The explanation: Given chord c = 1m.

Typical range of front spar location = 20% to 30% of chord = 20% of 1 to 30% of 1 = 0.2*1 to 0.3*1 = 0.2m-0.3m.