AIRCRAFT RELIABILITY MAINTENANCE

Aircraft Reliability Maintenance

Aircraft Maintenance

Introduction

A rocket engine TAN (Thrust Augmentation Nozzle) is a propelling TAN (Thrust Augmentation Nozzle) usually of the de Laval type used in a rocket engine to increase and increase speed the burning gases, from flaming propellants, so with the intention of the exhaust gases exit the TAN (Thrust Augmentation Nozzle) at hypersonic velocities. The optimal size of a rocket engine TAN (Thrust Augmentation) ambient pressure is equal to the output pressure of the atmosphere decreases with height that a rocket engine in the TAN (push breast Ascending) the optimal size should be used. Earth and the orbit, only the height of the optimal design of a simple SO (push breast growth), productivity loss, and loss of fuel among other Rocket ride heights.

SO (increase pushing the title) after leaving the jet pressure is above ambient pressure to a tan (Ascending push the title) in the air 'underexpanded' is said to be under pressure on the environment, then it 'is overexpanded.

Light overexpansion, but some reduction in yield will cause a little damage otherwise. Approximately 40 percent of the jet pressure chamber, and then 'flow into the separation, however, "occurs. This (increase in breast thrust) jet imbalances can cause damage to the SO vehicle or motor control difficulties, or just cause.

In some cases where the reliability and fire safety reasons, a rocket engine is desirable to use all the way to orbit. The altitude and not only provided support for the optimum performance from SO (push breadth growth), however, must be in the sea environment during multi-stage design from the engine other "first step" in addition, then the designers usually (sea level) overexpanded choose a design. The two solid rocket boosters provide the career force, such as free shuttle to spend almost the space shuttle main engines thrust from most used technique.

TAN (Thrust Augmentation Nozzle) Design

You can build rockets, educational purposes, propelled by nozzle pressure. It uses a lightweight container, such as a plastic bottle which is used for bottled nozzle or soda, with a capacity of half liter or two liters. He has been to introduce a third full of nozzle, and once covered with a rubber stopper pierced by a tube, inverted and compressed air is introduced through the pipe until it blows the cap and let escape the nozzle with great speed. Out of the nozzle pushes the bottle up as if it were a conventional rocket. 

The rocket thrust upward drag on the mass of nozzle leaving the neck of the bottle and the speed achieved. In the next term Ec is the kinetic energy of nozzle coming out, expressed in joules, m is the mass of nozzle, expressed in kilograms and V is the velocity of nozzle in meters per second. The larger mass and higher velocity kinetic energy of nozzle and also led the push on the rocket. 

Ec = 0.5. m. V 2   

The mass is determined by the amount of nozzle leaving per second, which in turn depends on the section of the neck of the bottle and the internal ...