Accession Number : AD0015981


Title :   STUDY OF AUTOMATIC CONTROL SYSTEMS FOR HELICOPTERS. PART I. AERODYNAMIC TORQUE OF A HELICOPTER ROTOR EXPERIENCING TRANSIENTS IN RPM WHILE HOVERING


Corporate Author : HONEYWELL INC HOPKINS MN


Personal Author(s) : Warsett, Paul


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/015981.pdf


Report Date : Jun 1953


Pagination or Media Count : 17


Abstract : A study is being made of control systems from the point of view of attitudes and power. An equation was developed for the aerodynamic torque absorbed by a helicopter rotor experiencing transient disturbances in rpm while the helicopter is hovering. Auxiliary equations were derived to define the simultaneous transients in blade-coning angle and vertical velocity of the aircraft. The stipulated conditions and assumptions involved in the study are described.


Descriptors :   *HELICOPTERS , *HOVERING , *FLIGHT CONTROL SYSTEMS , AERODYNAMIC FORCES , SYNCHRONISM , TORQUE , AUXILIARY , TRANSIENTS , VELOCITY , HELICOPTER ROTORS


Subject Categories : Flight Control and Instrumentation
      Helicopters


Distribution Statement : APPROVED FOR PUBLIC RELEASE