Active/Adaptive Rotor Blade Control for Disturbance Rejecton and Performance Enhancement
Abstract
As part of a program for development of active/adaptive rotor systems light tests were performed with a helicopter featuring a powerful blade root acutuation system and a comprehensive sensor instrumentation. The test results gave a deep insight in the mechanisms involved in the reduction of BVI noise emissions and fuselage vibrations through 2/rev blade root control inputs and allowed the derivation of an algorithm for online estimation of the BVI noise emissions experienced on ground. In combination with a closed loop control law it yields a system which allows an automation reduction of the rotor disturbances on the basis of local blade surface pressure measurements. The closed loop system can also be applied to a trailing edge flap which has been realized and investigated in the Transonic Wind Tunnel Goettingen (TWG) in the second part of the active/adaptive rotor development program. The test results demonstrated the ability of a servo flap to twist the blade to a degree which is required for rejection of the rotor disturbances and enhancement of the rotor performance.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2001
- Accession Number
- ADP011124
Entities
People
- D. Schimke
- P. Jaenker
- R. Kube