ORIGINAL: blw
ORIGINAL: Konrad
Every lift equation I know of use velocity. So if velocity is zero (static) the ship won't fly. You need to keep your eye on the concept of pitch speed. As to the smart a****, of which I have been accused, yes static thrust can play a part in the acceleration to flying speed.
The only time there is no velocity is when the engine isn't running. You are wrong when you say static conditions produce zero velocity. Equations use the velocity of the prop (rpm) for one measurement (static), and a flying (moving) propellor uses two types of velocities (v and V).
There is no real value in static thrust, rpm, power, etc.
If the wing is not moving there is no lift. Static thrust means no change, no motion as in the airframe. So whatever value you get for thrust with the airframe static (at zero velocity) has no bearing at flight speed.
I did not say there was no work being done at zero velocity. The prop is moving a lot of air mass even even if the ship is standing still. Again thrust in our toy airplanes is a product of the prop, not wether the engine is a 2 cycle or 4 cycle