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External cooling
Cooling of the external skin of an aero-engine is achieved by suitable design of the aircraft airframe; the layout will depend upon where the engine is fitted and what kind of engine compartment is used. Normally, the cooling and ventilating of an engine bay or pod is achieved by ducting atmospheric air round the engine and spilling it back to atmosphere through suitably placed outlets (see figure). The air is usually taken from a ram inlet but provision is also made to provide a cooling and ventilating airflow during ground running periods. Another function of the cooling airflow is to remove flammable vapours from the engine compartment to reduce the fire risk.
compare zero- one- two- and three-address machines by writing programs to compute X=(A+B*C)/(D-E*F)
Casting means the pouring of molten metal into a mould, where solidification occurs. Advantages of Casting Process (i) It is the cheapest method of fabrication.
1.defination 2.explain the mechanisms of each process. 3. explain in detail how many types of each process 4. advantages 5. disadvantages
COMPARISON OF 2-STROKE AND 4-STROKE ENGINES: Two-stroke engine possesses the following advantages over the four stroke type: 1. Because of its valueless construction, the
the true length of a line is known to be 500m.the line was again measured with a 20m tape and found to be 502m,what is the correct length of the 20m tape.
The cupola is the most widely used furnace in the foundry for melting ferrous and non ferrous metals and alloys. Various zones of cupola (i) Well or crucibl
What is the difference between real money & nominal money? 1) Nominal cash is related to the measure of counting. Moderate figure is what is written on the bill. Whereas actual
how thermoelecteric thermometer is contructed and how it working
how to perform division of two laurent polynomials?
design a connectivity diagram for a 7.3 m satellite antenna
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