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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.
Q. Why is it desirable to design a casting to have directional solidification sweeping from the extremities of the mould to riser based on Chvorinov's rule? What would be an ideal
system log
Engine controls: Engine controls are very similar to flying controls, and the same types of equipment are used, such as rods, bellcranks and cables. Most control systems use ei
Wild west produces two types of cowboy hats. Type 1 hat requires twice as much labor time as a type 2. If all the available labor time is dedicated to type 2 alone, the company can
Fins vs Canards Canard control - Good lift/latax control for moderate angles of attack. - Shed vortices can interfere with tail to generate roll moment. - Tendency to stall
an electric bulb weighing 15n hangs from a point C by 2 strings AC and BC .string AC is inclined at 60degree to horizontal and BC at 45 degree to vertical.find tension in string.
Suppose you are managing a software-development project for which reliability is a major concern. A continual stream of anomalies is discovered in the software during the testing p
Compressor characteristics: When a compressor is designed it is essential to establish the points at which it is likely to surge. Tests are carried out to determine the relati
explain the funcyions and structure of foreign exchange market.
1) An investment project requires a net investment of $100,000. The project is expected to generate annual net cash flows of $28,000 for the next 5 years. The firm''''''''s cost of
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