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A piston engine has bhp of 600 at sea level. Now, if engine is operating at an altitude where density ratio is 0.816 then, find the value bhp at that altitude.

A piston engine has bhp of 600 at sea level. Now, if engine is operating at an altitude where density ratio is 0.816 then, find the value bhp at that altitude. Correct Answer 37

Given, sea level bhp, p1 = 600, density ratio d = 0.816 Now, bhp at an altitude = p1*(d – ((1-d)/7.55)) = 600*(0.814-((1-0.814)/7.55)) = 600*(0.814-(0.1836/7.55) = 600*0.0616 = 37.

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