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  1. mogorzalek

    Supersonic Lift/Drag Ratio

    About the SR 71 L/D. I mean the L?D at cruise at Mach 3. The cruise L/D is a measure of aerodynamic efficiency, and can determine the cruise range of an aircraft. mogorzalek
  2. mogorzalek

    Supersonic Lift/Drag Ratio

    Does anyone know what the L/D of the SR 71 is at Mach 3?

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