Enhanced Rotorcraft Aerodynamic Modules to Support Flight Testing

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-05-C-0107
Agency Tracking Number: N043-257-0352
Amount: $150,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2005
Solitcitation Year: 2004
Solitcitation Topic Code: N04-257
Solitcitation Number: 2004.3
Small Business Information
ADVANCED ROTORCRAFT TECHNOLOGY, INC.
1685 Plymouth Street, Suite 250, Mountain View, CA, 94043
Duns: 149732315
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Chengjian He
 Director of IR&D
 (650) 968-1464
 he@flightlab.com
Business Contact
 Donna Carrig
Title: Financial Manager
Phone: (650) 968-1464
Email: donna@flightlab.com
Research Institution
N/A
Abstract
Progress has been made in developing high fidelity rotorcraft simulation models in order to adequately predict rotorcraft performance, stability, and loads in support of design, operation, and flight testing. Limitations, however, exist in several essential aspects of modeling rotor aerodynamics including blade stall, rotor tip effects, rotor downwash, rotor/airframe interference, and rotor aeroelastic interaction. We propose to: (1) enhance blade dynamic stall modeling to improve the prediction of 3D stall delay and accuracy of blade drag and pitch moment; (2) enhance blade tip modeling to consider the 3D blade tip effect; (3) enhance high rate of descent modeling by including the effects of unsteady variation of the vortex ring state; (4) enhance rotor wake and aerodynamic interference modeling by allowing for the effects of high blade twist and inclusion of fuselage interference on the rotor; (5) enhance rotor aeroelastic modeling by developing a coupled airframe/rotor and coupled FLIGHTLAB/CFD solution for the aeroelastic blade loads calculation.

* information listed above is at the time of submission.

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