The high speed intersection of the thrust necessary and available curves in level, steady flight yields the airplane's maximum speed.
The power generated by the propeller is equal to thrust (pounds of force) times velocity (distance per unit time) and a scaling constant appropriate to the unit system being used. One horsepower is defined as 550 ft-lb of work per second.
In the case of single-engine fixed gear airplanes, double your power-off stall speed by 1.2, and in the case of single- or multiengine retractable gear aircraft, by 1.3.
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