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Seperate Determination of Coexisting Components of Aerodynamic Drag on Rotors

Award Information

Agency:
Department of Defense
Branch:
Army
Award ID:
32991
Program Year/Program:
1998 / SBIR
Agency Tracking Number:
32991
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
APPLIED AERO, LLC
48365 Avalon Heights Terrace Fremont, CA 94539
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Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 1998
Title: Seperate Determination of Coexisting Components of Aerodynamic Drag on Rotors
Agency / Branch: DOD / ARMY
Contract: N/A
Award Amount: $729,902.00
 

Abstract:

Three approaches -- a wake-integral procedure, a viscous theory of aerodynamics and an integro-differential method for Navier-Stokes flows -- will be fully developed and consolidated to create a new technology for studies of aerodynamic drag associated with unsteady flows. These new approaches deal with theoretical, experimental and computational aspects of the aerodynamic drag problem. They utilize integral expressions derived from vorticity formulations of the Navier-Stokes equations. With these integral expressions, aerodynamic drag on a solid object can be determined using only a limited amount of information about the trailing vortical wakes flow. Coexisting drag components on the solid object can be individually determined. In the Phase I work, an investigation of the hovering rotor problem will be performed. Wake integrals will be derived and computer codes will be prepared for separately evaluating drag components on hovering rotors using available wake data. The viscous theory of aerodynamics and the integro-differential Navier-Stokes solver will be extended to the hovering rotor application. The feasibility and the practicality of the new technology as applied to the problem of the rotor in forward flight and to other unsteady flow problems will be demonstrated.

Principal Investigator:

James C. Wu
5106572126

Business Contact:


0
Small Business Information at Submission:

APPLIED AERO, LLC
48967 Ventura Drive Fremont, CA 94539

EIN/Tax ID:
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No