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Originally Posted by Botnst
You aeroplane guys, is that why fancy-schmancy fighter jets squirt water to boost speed? Somebody told me that one time and I thought he was FOS. Maybe not?
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Water injection in a jet engine increases performance in two ways. One is the reduction in compressor outlet temperature allows for more fuel to be burned without melting the turbine. Two, the increased mass flow from the weight of the water will boosts the thrust.