Thrust generated by an engine is proportional to mass flow rate.

Propulsion topics include: Jet-engine thrust considerations, turbojet installed thrust, installed-thrust methodology, piston-engine and turboprop performance. Aircraft propulsion systems generally consist of an engine and a means to generate thrust, such as a propeller or nozzle. The propulsion system's thrust must balance the airplane's drag when cruising.  Here are some types of aircraft engines: Turbojet: A jet engine that uses a turbine-driven compressor to compress air for fuel combustion. The engine produces thrust by spraying a high-energy gas stream from the exhaust... Show more

Propulsion topics include: Jet-engine thrust considerations, turbojet installed thrust, installed-thrust methodology, piston-engine and turboprop performance.

Aircraft propulsion systems generally consist of an engine and a means to generate thrust, such as a propeller or nozzle. The propulsion system's thrust must balance the airplane's drag when cruising. 

Here are some types of aircraft engines:

Turbojet: A jet engine that uses a turbine-driven compressor to compress air for fuel combustion. The engine produces thrust by spraying a high-energy gas stream from the exhaust nozzle.
Turboprop: A turbine engine connected to a propeller by a reduction gearbox. The turboprop has better propulsion efficiency than a turbojet at flight speeds below 500 miles.
Turboshaft: Similar to a turboprop, but the propeller is supported by the engine and the engine is bolted to the airframe. Turboshaft engines are primarily used for helicopters and auxiliary power units.
Turbofan: A jet engine with a bypass fan that directs a large mass flow rate around the engine core. 

Other types of jet engines include ramjet, pulsejet, and scramjet. 
 

Related Test: Aircraft Design Practice Test: Propulsion and Fuel System Integration

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