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Old 25th Nov 2005, 23:57
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AeroTech
 
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The autostart And The Inflight Engine Start

Hi,

I have some questions regarding the autostart and the inflight engine start.

-Can APU start automatically in case of autostart?

-In case of inflight engine flame-out (engine out of the envelope), will the pilot use the crossbleed, dive (to have more speed), or use the APU?

What is the benefit of the autostart since:
a-the protections of the autostart are removed in flight (hot start can cause damage..........)
b-the APU cannot not be used pneumatically at high altitude (the recent APUs up to 17,000 or 22,000 ft)
c-the crossbleed start can overpower the operating engine (let's say in twinjet at high altitude).

Thank you.
Best regards
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