Enhanced Rotorcraft Aerodynamic Modules to Support Flight Testing

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$150,000.00
Award Year:
2005
Program:
SBIR
Phase:
Phase I
Contract:
N68335-05-C-0107
Award Id:
75004
Agency Tracking Number:
N043-257-0352
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
1685 Plymouth Street, Suite 250, Mountain View, CA, 94043
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
149732315
Principal Investigator:
Chengjian He
Director of IR&D
(650) 968-1464
he@flightlab.com
Business Contact:
Donna Carrig
Financial Manager
(650) 968-1464
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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