From: Jean-Francois Mezei <MEZEI_JF@Eisner.DECUS.Org> Organization: Digital Equipment Computer Users Society Date: 13 Oct 95 01:30:29 Followups: 1 2 3 4 5 6
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When an engine is "idle" (eg: when aircraft awaiting takeoff, when aircraft finally parks at the gate etc), how much thrust is being generated ? If brakes are not applied, will the aircraft start moving right away with engines "idling" ? When idling, do the compressor blades spin slowly enough to be seen ? Also, in a previous posting, someone said that without an APU, an aircraft would require power and "air" from the ground to start its engine. Are we talking about compressed air ? What for ? Also, why are DC9s and 727s capable of backing up from the gate without being pushed ? Is it a technical or legal consideration ? (eg: engines being far enough away from terminal for noise control etc).