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Old 22nd Sep 2015, 21:43
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73qanda
 
Join Date: Dec 2014
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Max range is aprox 1.32 VMD and you certainly are not at the bottom of the drag (power required) curve.
FE Hoppy, can you give me some clarification around the 1.32 VMD you quoted above? I went flying this morning and noted that our VMD was 236kts. I got this speed from the single engine drift down page in the FMC, (I tried verifying it using AOA from the HGS but after doing some reading I realise that my understanding of the AOA/ VMD relationship is woeful.)
TAS was 440kts Mach was 0.72
Using the 1.32 you gave gives us an approximate MRC of either
311 kts IAS or Mach 0.95 which are obviously incorrect.
I am not particularly knowledgable regarding jet aerodynamics so I would like to know if I have missed something or if your statement is incorrect. Can you help me there?
Thank you.

Last edited by 73qanda; 22nd Sep 2015 at 22:02.
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