Quote:
Originally Posted by SalaciousTunare  Lonin is simply wrong.
By his logic a fan boat with a top speed of 10mph, could go against the current of a 10mph river and make headway upstream.
IT CANNOT RETARD.
That's the whole fucking point.
The FORCE IS HORIZONTAL NOT VERTICAL. This is about forces, it has nothing to do with what type of force, it only has to do with directional forces. As the plane is on the ground it is at the mercy of a treadmill moving it backwards. It HAS to makeup this deficit directional force in order to achieve flight. This is absolutely no different than the effects of tailwinds and headwinds on a runway takeoff. It is the opposite of a steam catapult on an aircraft carrier. All are forces exerted on the plane achieving different effects. Do you argue that tailwinds and headwinds and steam catapults have zero effect on take offs? No, they are all different forces affecting the airplane. If the runway was mud instead of flat pavement, that would be another force (friction) Man were you guys fucking asleep in physics or what.
Basic physics man, as the plane is on the ground the thrust for takeoff is entirely horizontal up to the moment the adequate pressure imbalance is achieved of airflow over the wings.
Up until that moment for all intensive purposes that airplane is a LAND vehicle. |
Yeah, but what force does the treadmill exert on the plane? Beyond the normal (perpendicular) force, none, except for a minor amount of friction spinning the wheels. Essentially all of the energy from the engine goes to moving the plane forward through the air. The wheels just spin faster. Tailwinds and headwinds are an entirely different beast, since the air, *not the ground* is the relevant medium to think about for planes.
