Tilt-Rotor Noise Reduction Study

摘要

The successful introduction of the civil tilt rotor into the national airspace system relies heavily on its community acceptance. In particular, a tilt rotor with reduced noise emissions is critical. Various approaches are being considered to address this problem. One such approach, the application of remotely adjustable on-blade control elements to rotor blades, is receiving considerable attention. This research effort is an attempt to better define the on-blade requirements and ultimately to identify a feasible design implementation. The objective of this effort, performed by Continuum Dynamics, Inc. under an SBIR (Small Business Innovation Research) Phase I contract, was to determine a mix of on-blade control-surface deflection or in-flight twist change to produce significant payload and range enhancement and blade vortex interaction (BVI) noise reduction for a representative civil tilt rotor.