630 - ATPL Question Bank in English - For a turbojet stationary on the ground, assume nozzle exit pressure equals ambient pressure. Which statements are correct? 1 - Net thrust equals exhaust mass flow multiplied by exhaust velocity, with zero free-stream velocity. 2 - Thrust requires the exhaust to push against surrounding air as a solid reaction surface. 3 - Propulsive power delivered to the stationary aeroplane, thrust multiplied by aeroplane speed, is zero even though the engine consumes fuel and the jet carries energy. 4 - Full-power thrust is independent of outside-air temperature. Select all the correct statements.

Question 630 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot Licence