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Combined Viscous Vortex Particle Method with a Near Body CFD Solver for…

Award Information

Department of Defense
Award ID:
Program Year/Program:
2010 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Advanced Rotorcraft Technology, Inc.
1330 Charleston Rd Mountain View, CA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2010
Title: Combined Viscous Vortex Particle Method with a Near Body CFD Solver for Rotorcraft Comprehensive Analysis
Agency: DOD
Contract: W911W6-10-C-0058
Award Amount: $729,987.00


The unsteady rotor wake is a complicated flow problem and remains a challenging aspect of comprehensive rotorcraft analysis. The Phase I research has shown that a viscous vortex particle method (VVPM) can provide a first-principle-based solution to the challenging rotor wake problem. Applying VVPM for wake vorticity transportation, while using a modern near body CFD solver for resolving vorticity sources of the rotor blades or fuselage will render an effective hybrid aerodynamic solution in support of comprehensive rotorcraft analysis. This Phase II SBIR will fully develop and implement the coupled VVPM/CFD/CSD solution for an accurate prediction of the rotor wake vorticity variation and the rotor airloads calculation. The proposed SBIR research emphasizes the fundamental rotorcraft wake dynamics modeling and resulting airloads prediction accuracy. The development will address the integration of the state-of-the-art VVPM with a modern rotorcraft comprehensive analysis program, such as RCAS, in support of rotorcraft research, design, and engineering applications. The Phase II work will also emphasize the modularization of VVPM to make it sufficiently versatile that it can be used as a plug-in module for general solver integration platforms, such as HI-ARMS.

Principal Investigator:

Chengjian He
Vice President of Researc
(408) 523-5100

Business Contact:

Donna Carrig
Vice President of Finance
(408) 523-5100
Small Business Information at Submission:

Advanced Rotorcraft Technology, Inc.
635 Vaqueros Avenue Sunnyvale, CA -

EIN/Tax ID: 942839639
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No