The exhaust cone collects the exhaust gases discharged from the turbine section and gradually converts them into a solid flow of gases. In performing this, the velocity of the gases is decreased slightly and the pressure increased.
What is the function of the exhaust section?
An exhaust system carries waste gases and other combustion products away from an automobile engine. It allows the vehicle to operate with minimal noise, smoke and pollution transmitted to the environment.
What is an exhaust turbine?
The exhaust gas turbine extracts energy from the exhaust gas and uses it to drive the compressor and overcome friction. In most automotive-type applications, both the compressor and turbine wheel are of the radial flow type.
Why is the exhaust cone of a turbine engine a divergent duct?
Energy wasted in friction between the gas and exhaust pipe at high velocity can be reduced by reducing the gas velocity. A tail cone to the rear of the turbine creates a divergent duct which reduces velocity and increases pressure.
What is the main function of the engine exhaust nozzle?
This chapter describes the exhaust nozzle and its application to aircraft gas turbine engines. The nozzle’s two primary functions are to generate thrust and to act as a control valve for the engine.
What does turbine wheel do?
The turbine wheel is found on the exhaust side of the turbo, and is spun directly by the exhaust gases exiting the engine. Therefore it behaves much like the pulley on a supercharger, providing the rotation for the compressor end of the turbo.
Is a turbocharger part of the exhaust system?
The turbo is powered by the exhaust gases. One side of the turbo is located at the exhaust manifold, the other at the engine’s air intake, and it contains two small fans joined by a shaft. As exhaust passes through the turbo, it spins one fan, called the turbine.
What are the three components of a turbine engine exhaust system?
The components of the exhaust section include the exhaust cone, tailpipe (if required), and the exhaust nozzle. The exhaust cone collects the exhaust gases discharged from the turbine section and gradually converts them into a solid flow of gases.
Is a jet engine a combustion engine?
Jet engine, any of a class of internal-combustion engines that propel aircraft by means of the rearward discharge of a jet of fluid, usually hot exhaust gases generated by burning fuel with air drawn in from the atmosphere.
How does an exhaust duct increase thrust in a turbine engine?
As the exhaust gases exit the rear of the engine, they flow into the exhaust nozzle. … Since this forms a convergent duct, the gas velocity is increased providing increased thrust.
What is an exhaust nozzle?
: the terminal portion of the tail pipe of a jet engine.
How does a nozzle decrease pressure?
The pressure drops in a convergent nozzle because of the Bernoulli Principle. A nozzle is a spout on the end of a hose or pipe used to control the movement of a fluid like water or air. … The energy in this random motion is converted into faster forward motion, known as stream flow. This change makes the pressure drop.
What is divergent nozzle?
A de Laval nozzle (or convergent-divergent nozzle, CD nozzle or con-di nozzle) is a tube that is pinched in the middle, making a carefully balanced, asymmetric hourglass shape. … Because of this, the nozzle is widely used in some types of steam turbines and rocket engine nozzles.