Rebort asimant - Research Paper Example

The aim of the experiment is to understand the operation and performance of the jet engine. This experiment also focuses on the application of the thermodynamic equations in the application of engines. The experiment, also tries to investigate on variation of power, efficiency and torque with the speed of the shaft The jet engine, which is a form of internal combustion engine, gains energy from the combustion of fuel and air which produces mechanical power. However, most energy is get wasted inform of heat.

This makes the engines to have large radiators. The power of the engine; energy present in the combustion chamber is converted into useful power; output. The remaining energy gets out inform of thermal loses. Inherently, free power turbines do not drive the compressor while the fixed power turbines do drive the compressor. The free type is used in civilian military due to its power torque. Power output of a jet engine is referred as break power and is measured with a break dynamometer. The jet engine in this report is dry-friction break dynamometer.

Dynamometer places the load onto the engine and a corresponding torque is recorded. on the other hand, indicated power Pi describes the power that is released from the combustion chamber by the burning fuel. Generally, break power is less than indicated power since the allowance on the indicated power is for overcoming the friction in the engine. Thermal- which is represented as hp engine output is the total work done by the engine, while the hp value of the fuel consumed give heat added to the air system.

Factor that affect thermal efficiency include the inlet temperature of the turbine, the compression ratio and the efficiencies for both the compressor and turbine. For a normal jet engine, the range of the thermal efficiency is 45%-50%, turbine temperatures of 2,500 to 3,000