A Supersonic Propeller Driven Aircraft, Possible ...
May 03, 2007· This is not exactly the same as what was happening when all the Lockheed Electras were crashing during the late ''50''s and early ''60''s, but it is close. The propellers on those aircraft actually "went supersonic" in two separate axis (longitudinal to the aircraft fuselage, and rotational to the plane of the propeller disk).