To find the jet efficiency of the engine, we need to use the equation:
Efficiency = (Jet Velocity / Flight Velocity) * 100
Given:
Jet Velocity = 376 m/s
Flight Velocity = 11 km (convert to m) * 0.82 (Mach number)
Flight Velocity = 11 km * 1000 m/km * 0.82 = 9020 m/s
Now, substitute these values in the equation to find the jet efficiency:
Efficiency = (376 m/s / 9020 m/s) * 100
Efficiency = 0.0417 * 100
Efficiency = 4.17
Therefore, the jet efficiency of this engine is 4.17 (without the % sign).
It was already determined that the jet velocity of this engine is 376 metres per second. Suppose that this Boeing 777 flies at 11 kilometres at M=0.82, what is then the jet efficiency of this engine (in percent)? Do not include the % sign in your answer.?
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