Accession Number : AD0783393

Title :   Flight Test of a Hingeless Flexbeam Rotor System

Descriptive Note : Final rept.

Corporate Author : BELL HELICOPTER TEXTRON INC FORT WORTH TX

Personal Author(s) : Hughes, Charles W ; Wernicke, Rodney K

PDF Url : AD0783393

Report Date : Jun 1974

Pagination or Media Count : 213

Abstract : This report presents the results of flight tests of a stiff-in-plane flexbeam hingeless four-bladed main rotor, hereafter referred to as the Model 609. The tests were conducted on a modified UH-1 at gross weights from 10,000 to 14,000 pounds and at level-flight speeds up to 150 knots to evaluate performance, handling qualities, maneuverability, and load levels. The tests also evaluated a focused pylon system designed for isolating rotor vibrations.

Descriptors :   *HELICOPTER ROTORS, AERODYNAMIC LOADING, FLIGHT MANEUVERS, FLIGHT TESTING, LEVEL FLIGHT, STABILITY, STALLING

Subject Categories : Aerodynamics
      Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE