PPRuNe Forums - View Single Post - High accident rates in light twins an alternative?
Old 28th May 2008, 23:08
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john_tullamarine
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A few ill-conceived ideas floating around in this thread ..

(a) AEO/OEI, the climb performance graph is something of an upturned teacup profile .. with the AEO picture sitting a long way above the OEI

(b) the actual numbers will depend on the aircraft, configuration, atmospherics, etc

(c) regardless of the numbers, best climb performance is somewheres in the middle .. not at the ends of the graph

(d) typically, in a light twin other than at low weight and Hp/OAT, this OEI best climb performance will be modest .. or negative (ie a descent)

(e) if the aircraft flies slower/faster (presuming same thrust) it will be at a reduced climb/increased descent as appropriate .. you can't make something from nothing

(f) blue line is for one set of conditions and may not be appropriate for the actual conditions (including aircraft in-service deterioration) but it's probably a good place to start unless you have the flight test info to start with a different speed

(g) the problem of letting speed decay trying to chase mythical climb performance ... is one of flight management discipline and airmanship and has a predictable outcome in most cases ...


So far as ssg is concerned .. we will continue to remove posters who show an uncanny resemblance to him ... however, each new incarnation takes a little while to suss out. If it provides a modicum of amusement for the remainder of the folk, so be it.
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