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Thread: Large aircraft APU
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Old 3rd February 2010 | 11:57
  #4 (permalink)  
rudderrudderrat
 
Joined: Oct 2009
Posts: 1,270
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From: UK
Hi balaton,

Why is it used as APU on big airplanes
Besides electrics - the APU needs to deliver air for conditioning and engine start. A high bypass APU can deliver bigger quantities of LP air.
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