Horsepower, why does it do what it does?
Pardon me for asking what might at first seem like a stupid question...........
Aircraft "X" has a 160 hp engine and fixed pitch propellor "Y" on the front. When it departs it shows 2550 rpm on the dial.
Aircraft "A" has a 180 hp engine and fixed pitch propellor "Y" on the front. When it departs it shows 2550 rpm on the dial.
So, my point is this. The propellors are identical, the a/c is identical and the engine speed is identical. So how come one gets airborne quicker than the other. Where does the HP come into it?