The Rocket and Recovery System

Topics: Rocket, Internal combustion engine, Force Pages: 2 (577 words) Published: October 24, 2010
Giovanni Lavermicocca
Period 5
Oct, 18 210
The rocket and recovery system
Is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engine. In all rockets, the exhaust is formed entirely from propellants carried within the rocket before use. Rocket engines work by action and reaction. Rocket engines push rockets forwards simply by throwing their exhaust backwards extremely fast. Usually the rocket are propellant by chemical, and this rockets store a large amount of energy in an easily released form, and can be very dangerous. All rockets have Thrust is the force that makes a rocket move off the launch pad. This is a demonstration of Newton’s Third Law of Motion:“For every action there is an equal and opposite reaction.” The action of the gas escaping through the engine nozzle leads to the reaction of the rocket moving in the opposite direction. The most of rockets return to earth through recovery system, but What is a recovery system? This is an assembly of components that enable the launcher, coiffed or payload to be recovered undamaged and reusable. Some methods are the Featherweight recovery: is only appropriate for the tiniest of rockets, is to let the rocket flutter back to earth after ejecting the motor. Also these method destabilize the rocket to prevent it from entering a ballistic trajectory on its way back to earth. Other method is collapsible impact absorbing structure: That is either sacrificial, this it has honeycomb that Impact absorbent structures that absorb the high energy deceleration loading. It is like the legs of the NASA moon lunar Lander module where made from hollow telescopic legs filled with light aluminum honeycomb. That simply crushed on landing as the leg strut telescoped. Here the energy required to plastically collapse the aluminum honeycomb can be used to absorb the impact energy of the rocket and reduce severe levels of deceleration.  The most used recovery system is Parachute...
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