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Post by Erik on May 8, 2016 11:57:04 GMT -5
While I have no specific answers for you, I do know that all these depend heavily on the length of sector flown, infrastructure as well as legislation in airspace visited, weather and even who is captain. The difference between a transcontinental flight and a transpacific one with Pan American will be bigger than any one sector with say either Pan Am or United. I think that if you use even 'just' the sources (a lot, actually) very recently pointed to in this forum and combine those with the supplied handling notes, you can hardly go wrong in terms of what is possible as level of realism in FS9 or FSX.
The only thing that might be generic I think, is continuous climb seems to have been very rare for any type except the huge flying boats and Concorde (i.e. aircraft with extremely critical performance for the job, flying in very low-density environment).
Erik
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Post by Defender on May 8, 2016 13:58:09 GMT -5
Cormack,
That information is probably only available in the KC-97 manuals I mentioned before, which have performance charts.
I have various versions of the Pilot Notes, BOAC (2), United and AOA and all they say about the climb is that you use 2550 rpm, 50" MAP and maintain 165 kts. This would be a Boeing rather than an airline recommendation based on flight testing.
Then of course your maximum initial altitude is, all other factors aside, the highest altitude that the aircraft can cruise at its current weight using your preferred cruise power settings.
Bill
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Post by Defender on May 8, 2016 17:03:42 GMT -5
If it helps here are some examples of the maximum cruise heights (density altitudes) from the KC-97 manual. These figures assume standard atmosphere.
At normal cruise, lean mixture power, 1735 bhp, 2100 rpm, 158 lbs torque
140,000 lbs 10,500' 130,000 lbs 16,500' 120,000 lbs 23,000'
Or, if a higher initial altitude is required, rich mixture, 1900 bhp, 2100 rpm, 173 lbs torque
140,000 lbs 17,500' 130,000 lbs 23,000'
But that higher power incurs a heavy fuel penalty, about 40% greater than manual lean, as well as more climb power fuel.
Bill
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