PPRuNe Forums - View Single Post - Boeing 737 Max Recertification Testing - Finally.
Old 2nd Oct 2022, 07:37
  #739 (permalink)  
fdr
 
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Originally Posted by MechEngr
It would be a confidence builder if that included a drag-polar comparison to show the amount of fuel penalty and, of course, the reason for the investigation, the Cm vs Alpha chart. Edit: that Cm vs Alpha chart should also be transposed to Alpha vs Stick force.
That is proprietary information, not sure TBC would be dishing that out, but there is reasonableness that comes from renting a MAX sim and doing a QTG flyout. The margins permitted for an approved simulator are quite large but will give some semblance of the polar, at least within normal envelope, and will give a fair answer on control loads, and derivatives. Getting hands on the QTG cards themselves is probably going to be frowned on, they are still proprietary information. The sims aren't the M-CAB or the real thing. The airline operators have accurate information from the parameters that are being pulled for the QAR data for monitoring, W/delta is a pain from line data, you need a stack of it to get a statistically significant performance set unless you have some exact data points from the OPM and digital performance DB.
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