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
Distribution Statement : APPROVED FOR PUBLIC RELEASE