Question

Let’s consider we want to loft fuselage by using flat wrap method then, __________

(a) longitudinal control lines must be straight

(b) longitudinal control lines must be curved

(c) longitudinal lines must be avoided

(d) always use cross shape parameter

This question was addressed to me in unit test.

This is a very interesting question from Configuration Layout in portion Configuration Layout and Loft of Aircraft Design

Answer 1

Correct choice is (a) longitudinal control lines must be straight

The explanation: Typically, to use flat wrap method following 2 conditions are required. 1. Longitudinal control lines needs to be straight and 2. Tangent angles of conic should remain constant longitudinally.