Here are the answers to the jet engine propulsion typical UltiLearn questions:
1. a) Sir Frank Whittle patented the design for a reaction (jet) engine in 1930.
2. d) Axial flow compressors can achieve higher pressure ratios than centrifugal compressors.
3. a) The Tornado aircraft uses translating cowl thrust reversers.
4. Reverse thrust is simply produced by redirecting the jet exhaust forwards rather than backwards. This allows the aircraft to slow down after landing without using wheel brakes.