In the tests I have done (And just done in 4.09RC2) the very first signs of compressibility on the P38L Late at 10,000feet are occurring at 410mph (IAS) or Mach 0.65. By the first signs I mean an ever so slight tendency for the nose to drop from the trim state. As the dive increases the first signs of buffet are detected at Mach 0.72-0.74. As Mach increases both buffet and rate of nose drop increase.
that is not that far different from the POH values and the description given in Americas 100,000 Page 158 in the Dive and recovery paragraph.
What symptons and IAS/ALT values are you seeing Capt Stubbing that indicate it is happening at lower values ?
Last edited by IvanK; 09-24-2009 at 05:22 AM.
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09-24-2009, 02:01 AM
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