parachute
) Parachute (also known as: insurance umbrella), in the aviation science and technology, is mainly made of breathable flexible fabric and can be folded in the umbrella package or umbrella box, the work relative to the air movement, inflatable, Object deceleration, stability of an aerodynamic reducer. It usually has a large area of the canopy, can produce a lot of air resistance. A person or object is connected to an umbrella through a rope. The parachute can guarantee the safety of people or objects falling in the air. The parachute is an important piece of airborne troops. With parachutes, people can control the direction of descent to ensure that the landing site is accurate. ...