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Constant IAS in a climb, what will happen?
  • A
    Maximum coefficient of lift increases with increasing Mach number
  • B
    Coefficient of lift increases with increasing Mach number
  • C
    Maximum coefficient of lift decrease with increasing Mach number
  • D
    Coefficient of lift decrease with increasing Mach number
Refer to figure.
If altitude is increased at a constant IAS, Mach number will increase. At low speed CLMAX is fairly constant, but above M0.4 CLMAX decreases as shown in the figure.

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