The following information is available for an aircraft four-stroke reciprocating engine:indicated mean effective pressure (IMEP) = 160 psistroke = 5 inbore = 5 inengine rpm = 3000number of cylinders = 9cylinder clearance volume = 15 in3engine mechanical efficiency, ηmech = 90%propeller efficiency, ηprop = 80%Calculate:brake horsepower (BHP)indicated horsepower (IHP)thrust horsepower (THP)friction horsepower (FHP)brake mean effective pressure (BMEP)Compression Ratio (is your answer reasonable for a spark ignition engine?)

Acompressor compresses a gas, a pump compresses a liquid. for a given pressure ratio, why does it take more work to compress a gas in a compressor than a liquid in a pump? a)- for a given pressure ratio the average specific volume for a gas is much higher than the average specific volume for a liquid. b)- there is no difference. the only difference is the amount of heat generated (not work) c)- for a given pressure ratio the average volurge for a gas is much higher than the average volume for a liquid. d)-there is no difference