| Autor: |
Brandon Hagerty, Kelly C. Cheng, Nicole Obriecht, Tanner Gasow, Benton H. Lau, Ben W. Sim |
| Rok vydání: |
2010 |
| Předmět: |
|
| DOI: |
10.21236/ada532806 |
| Popis: |
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 and/or 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 University/University of Maryland (SM), Georgia Institute of Technology/Pennsylvania 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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
