Accession Number:

AD0750359

Title:

A Theoretical and Experimental Investigation of Flap-Lag Stability of Hingeless Helicopter Rotor Blades

Descriptive Note:

Corporate Author:

ARMY AIR MOBILITY RESEARCH AND DEVELOPMENT LAB MOFFETT FIELD CA AMES DIRECTORATE

Report Date:

1972-01-01

Pagination or Media Count:

16.0

Abstract:

A substantial insight into the fundamental stability characteristics of the hingeless rotor may be obtained by considering only the flap and lead-lag degrees of freedom of a single blade. Although portions of this problem have been examined in previous research, the effects of may basic rotor parameters are poorly understood. The present study was undertaken to provide a rigorous formulation of the problem, and to systematically investigate the important parameters which characterize actual hingeless rotor blade configurations. In the absence of available experimental data a model rotor was designed and tested to validate the theoretical analysis.

Subject Categories:

  • Helicopters
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE