GENERAL KNOWLEDGE

Detailed explanation-1: -By October 1929, Whittle had considered using a fan enclosed in the fuselage to generate a fast flow of air to propel a plane at high altitude. A piston engine would use too much fuel, so he thought of using a gas turbine. After the Air Ministry turned him down, he patented the idea himself.

Detailed explanation-2: -By 1929, Frank Whittle had conceptualized the turbojet engine. The 1930s, however, proved challenging as he sought financial support and interest from the British Air Ministry. It was not until May 15, 1941, that the Whittle W1 jet engine, housed in the Gloster E. 28/39, made its maiden flight.