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the rate at which an engine does work, expressed in horsepower. It is measured by the resistance of an applied brake
brake horsepower[¦brāk ′hȯrs‚pau̇·ər]
The power developed by an engine as measured by the force applied to a friction brake or by an absorption dynamometer applied to the shaft or flywheel. Abbreviated bhp.
The power delivered to the propeller shaft (main drive or main output) of an aircraft engine. It is the difference between the horsepower delivered by the engine and that consumed by friction. The actual horsepower received by the propeller of an aircraft. Brake horsepower decreases with altitude. See also brake mean effective pressure.