In February 1938 Hanna Reitsch demonstrated the world's first practical helicopter by flying it indoors at the international auto show in Berlin, Germany. It subsequently set several records for altitude, speed and flight duration culminating, in June 1938, with an altitude record of 11,243 feet and a straight line flight record of 143 miles.
This makes the third post about twin rotor helicopters in three days.
Had the privilege of meeting her and Elly Beinhorn too in the mid 70s :-)
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