Question

Which of the following is not the type of an aircraft propulsion?

(a) Longerons

(b) Air breathing propulsion

(c) Non air breathing propulsion

(d) Rocket engine

This question was addressed to me by my college professor while I was bunking the class.

My enquiry is from Propulsion Selection topic in portion Propulsion and Fuel System Integration of Aircraft Design

Answer 1

Correct option is (a) Longerons

To explain I would say: Longerons are structural elements of an aircraft. Longerons are heavy structural members that run straight and used to prevent bending.