## Description

__Problem__

__Problem__

The exit velocity from a jet unit is 650 (m/sec) for an air flow of 40 (kg/sec) through the unit. The aircraft is flying at 250 (km/hr). Calculate: (1) the thrust developed; (2) the thrust power; (3) the propulsion efficiency. Neglect the effect of fuel.

__Given Data:__

__Given Data:__

- Exit velocity of Jet V
_{jet}= 650 m/sec - Mass flow rate of air ṁ
_{a}= 40 kg/sec - Velocity of the aircraft V
_{aircraft}= 250 km/hr = 250 x 1000/3600 = 69 m/sec

__Required:__

__Required:__

Thrust Force F , Thrust Power P , Propulsion efficiency η_{propulsion}.

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