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why 400Hz is used for aircraft systems ?
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Answer Posted / ashish yadav
IN A AITCRAFT SPACE SAVING IS IMPORTANT, BY USING A 400 HZ FREQ THE SIZE OF MOTOR, GENERATOR, ALTERNATOR & TRANSFORMER SIZE CAN REDUCED BECAUSE SPEED IS DIRECTLY PROPORTIONAL TO FREQ AND INVERSELY PROPORTIONAL TO FLUX THERFORE FLUX IS INVER TO FREQ.HIGHER THE FREQ LESSER THE FLUX AND LESSER THE CORE SIZE MEANS LESS WEIGHT AND SIZE.
ALSO 400 HZ IS A CRITICAL FREQ ABOVE WHICH CONDUCTOR SHOW SKIN EFFECT MEANS START RADIATING, THIS AFFECT THE RADIO SYSTEM PERFORMANCE.
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