ram drag

ram drag

ram drag
The loss of thrust in a turbofan or turbojet engine that is caused by increasing the velocity of the air entering the engine. Ram drag is the difference between gross thrust and the net thrust.
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A common inlet with bifurcated ducting can result in two airflows and a reduction in ram drag for the integrated inlet.
In addition to inlet recovery, minimizing inlet leakage and inlet bleed are key design issues because bleed and leakage losses are equal to 1 percent of ram drag, and the ram drag is about twice net thrust.
The bleed and leakage, while still the same percentage of ram drag as at Mach 2.