First flight of a twin turbine powered helicopter (modified Kaman HTK-1)
Friday, March 26, 1954
This is a Momentous Technology milestone.
Description:
The first time that any VTOL aircraft had flown using 2 turbine engines (Boeing 502-2) as the source of power to the main rotor.
This was a joint U.S. Army/Navy project using a modified, production Kaman HTK-1 helicopter.
Source: AHS Calendar March 2009
