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#1
July 10th 05, 05:04 AM
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#2
July 10th 05, 05:19 AM
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It takes bleed air which is hot and uses the energy in the hot air to cool
and dehumidify it. It is basically a series of heat exchangers, expansion turbines, compressors water traps/sprayers and valves. The rotating group turns something like 100,000rpm and overhauling one in an MU-2 can be upwards of $35,000. They typically last about 4000 hrs. The alternative is a vapor cycle machine which is better at cooling but even more expensive. Cabin windows and windshields last about 20yrs or so (4000 hr) and on a MU-2 cost $70,000 to replace. Nobody thinks about these things as being typical costs but they can add significantly to the operating cost over the lifetime of an airplane. Mike MU-2 "Richard Kaplan" wrote in message news:1120968289.ca16ce6fd2c4644fb07a8b68b04395b6@t eranews... What is an air cycle machine? -------------------- Richard Kaplan www.flyimc.com
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#3
July 10th 05, 05:34 AM
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