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Engines which propel aircraft via "jet propulsion", i.e. by expelling high-velocity gasses (usually primarily air) through propelling nozzles.

3 votes

Does the obstruction in a propeller duct increase exhaust pressure or decrease pressure/incr...

For a convergent nozzle the exit area will not change the jet pressure or velocity if the fan pressure ratio is the same. The major effect will be on the mass flow; a smaller nozzle area will let less …
Riccardo Magri's user avatar