Accession Number : AD0477910


Title :   PRELIMINARY FLIGHT TEST DATA. XH-51A RIGID ROTOR HIGH SPEED FLIGHT PROGRAM


Descriptive Note : Interim rept. no. 7


Corporate Author : ARMY TRANSPORTATION RESEARCH COMMAND FORT EUSTIS VA


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/477910.pdf


Report Date : Nov 1964


Pagination or Media Count : 40


Abstract : This report summarizes the flight test results of the Phase III four- bladed rotor testing on the XH-51A 'rigid rotor' helicopter. The object of Phase III was to evaluate the four-blade rotor in comparison with the three-blade rotor. Ground tests commenced on 13 July 1964 with the first flight on 21 July 1964. The phase was terminated on 3 October 1964 after 49 flights and 14.9 flight hours.


Descriptors :   *HELICOPTERS , HOVERING , FLIGHT TESTING , STABILITY , VIBRATION , MANEUVERABILITY , ROLL , PITCH(MOTION) , MOMENTS , ROTOR BLADES(ROTARY WINGS) , BENDING , REDUCTION , FUSELAGES , OSCILLATION , STRESSES , FREQUENCY


Subject Categories : Aerodynamics
      Helicopters


Distribution Statement : APPROVED FOR PUBLIC RELEASE