Accession Number:

ADA532806

Title:

Boeing-SMART Rotor Wind Tunnel Test Data Report for DARPA Helicopter Quieting Program (HQP), Phase 1B

Descriptive Note:

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCH CENTER

Report Date:

2010-09-01

Pagination or Media Count:

69.0

Abstract:

The Tactical Technology Office of the Defense Advanced Research Projects Agency DARPA initiated the Helicopter Quieting Program HQP in 2004 to develop high fidelity, state-of-the-art computational tools for designing advanced helicopter rotors with reduced acoustic perceptibility and enhanced performance. A critical step towards this achievement is the development of rotorcraft prediction codes capable of assessing a wide range of helicopter configurations and operations for future rotorcraft designs. This includes novel next generation rotor systems that incorporate innovative passive andor active elements to meet future challenging military performance and survivability goals. Phase I of the HQP program involved development of prediction methodologies tools by coupling computational structural dynamics CSD to computational fluid dynamics CFD modeling codes. Participants included Stanford UniversityUniversity of Maryland SM, Georgia Institute of TechnologyPennsylvania State University GP and Teledyne Sciences Corporation. Phase I was primarily geared towards validating these prediction tools for conventional rotors currently in use by the fleet. Results from the participants demonstrated significant improvements in prediction accuracy and correlations ref. 1 over classical comprehensive methods in all aspects of aerodynamics, structural, and acoustics responses of the rotor.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE