Date: 11 Jul 97 02:09:24 From: email@example.com (Robert Dorsett) Organization: Netcom Online Communications Services (408-241-9760 login: guest) References: 1 2
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In article <airliners.1997.19@ohare.Chicago.COM> firstname.lastname@example.org writes: >1) For the 5th engine which can be installed on the pod under the wings, >can it be used as part of the aircraft's engine thereby making the >aircraft run on five engines? No. It's just a hard point to hang something. There is none of the necessary plumbing to make it do anything. >2) What is the best EPR number to be attained? Is it the smaller the >number the better or the greater the better? Since EPR=turbine >discharge pressure: compressor inlet pressure. And why? EPR is a direct indication of the thrust being produced by the engine. So higher = better. An EPR of 1.0 is an engine not doing much of anything. EPR values will vary by engine type and nacelle design. So a 727 that might have a 2.0 takeoff EPR isn't necessarily more powerful than a 747 with a 1.3 takeoff EPR. >3) What is in the inside of an aircraft tyre? I mean is it >filled/pumped up with air like that of car tyres or is it built as a >solid whole piece?? Air. Or, if you wish, do a search on the archives (www.chicago.com/airliners) for "nitrogen". :-) -- Robert Dorsett Moderator, sci.aeronautics.simulation email@example.com firstname.lastname@example.org "Bother," said Pooh when his engine quit on take-off.