Vibratory Loads Data from a Wind-Tunnel Test of Structurally Tailored Model Helicopter Rotors
Abstract
An experimental study was conducted in the Langley Transonic Dynamics Tunnel to investigate the use of a Bell Helicopter Textron rotor structural tailoring concept, known as rotor nodalization, in conjunction with advanced blade aerodynamics, and to evaluate roto-blade aerodynamic design methodologies. A 1/5-size, four-bladed bearingless hub, three sets of Mach scaled model rotor blades, and two sets of Froude scaled model rotor blades were tested in forward flight from transition up to an advanced ratio of 0.35. The data presented pertain only to evaluation of the structural tailoring concept and consist of fixed-system and rotating-system vibratory loads. These data are useful for evaluating the effects of tailoring blade structural properties on fixed-system vibratory loads and for validating analyses used in the design of advanced rotor systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1991
- Accession Number
- ADA239620
Entities
People
- Jeffrey D. Singleton
- M-nabil H. Hamouda
- Paul H. Mirick
- Robert F. Idol
- William T. Yeager Jr.
Organizations
- United States Army Aviation and Missile Command