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Changes in temperature and pressure:
The changes in temperature and pressure of the gases through a gas turbine engine are illustrated in Figure 1.5 The efficiency with which these changes are made will determine to what extent the desired relations between pressure, temperature and velocity are obtained. The more efficient the compressor, the higher is the pressure generated for a given work input - i.e. for a given temperature rise of the gas. Conversely, the more efficiently the turbine uses the expanding gas, the greater is the output of work for a given temperature drop in gas.
VELOCITY AND PRESSURE
During the passage of the air (gas) through the engine, aerodynamic and energy requirements demand changes in its velocity and pressure. For example, during compression a rise in the pressure of the air is required with no increase in its velocity. After the air has been heated and its internal energy increased by combustion, an increase in the velocity of the gases is necessary to cause the turbine to rotate. Also at the propelling nozzle, a high velocity is required, for it is the change in momentum of the air that provides the thrust on the aircraft. Local decelerations of gas flow are also required - for example, in the combustion chambers to provide a low velocity zone for the flame.
sources of engine noise To understand the problem of engine noise suppression, it is necessary to have a working knowledge of the noise sources and their relative importance.
1-calculate the present value of the expected synergies. ( Assume a tax rate of 35%. a discount rate of 10% suitable for the cost oand revenue synergies combined, and inflation of
I have a homework assignment with 12 present value and future value related investment problems. Can you guys help with me these types of problems please?
Extrusion : In this method of forging, the metal slug is forced to pass through a die under the action of intense of hydraulic pressure. The process can be viewed as squeezing the
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how thermoelecteric thermometer is contructed and how it working
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Students are to undertake a tunnel blast design for the following conditions: • Tunnel is 5.5m wide by 5.5.m high • Rock is a granite with a UCS of 300 MPa • Drill hole diameter is
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