1. How planes and helicopters fly
Thrust is the propelling force that gives that gives the object speed. ... They are speed, air density, and the shape of the propeller. If you increase the speed of an airplane, more air will be forced under the wing. ... If you increase the speed at which helicopters rotors are turning, more lift will be created. ... There is a limit as to how slowly a plane can fly, and that limit is based on its angle of attack. ...
- Word Count: 1239
- Approx Pages: 5
- Grade Level: High School