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Incorporation of Gap Effects in the Design of High Performance Missile Control Fins

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 36984
Amount: $69,170.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Solicitation Year: N/A
Award Year: 1997
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
526 Clyde Avenue
Mountain View, CA 94043
United States
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Daniel J. Lesieutre
 (415) 968-9457
Business Contact
Phone: () -
Research Institution

Nielsen Engineering & Research (NEAR) proposes to develop a new missile control fin design method to maximize fin normal force, minimize actuator requirements, and control fin wake. Current design methods do not adequately model fin-body gap effects. CFD technology will be employed to provide insight in gap flow details. Ultimately, the CFD findings will be included in the NEAR OPTFIN control fin design method. In Phase I, the OPTFIN aerodynamic modules and other missile aerodynamics codes will be applied to control fin data to define predictive deficiencies; concurrently, the OVERFLOW CFD code will be employed to analyze the gap flows and to generate fin load predictions for comparison with the data. An unconventional fin planform will be designed with enhanced OPTFIN and analyzed with OVERFLOW. In Phase I Option, unconventional control fin-body concepts will be designed and analyzed with CFD for consideration in Phase II. During Phase II, alternative CFD gridding and turbulence modeling issues will be addressed in order to generate the best gap flow solutions. Promising designs will be tested in the wind tunnel. The Phase II deliverables will include a control fin design code including detailed fin gap effects.

* Information listed above is at the time of submission. *

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