Attenuation of Aircraft Wing Tip Vortices Using the Haney Swirler

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 26005
Amount: $78,399.00
Phase: Phase I
Program: SBIR
Awards Year: 1994
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
3001 Aerospace Parkway, Brook Park, OH, 44142
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr. Chin-shun Lin
 (216) 977-0138
Business Contact
Phone: () -
Research Institution
The proposed innovation would do for the tip vortex what the turning vanes do at the inlet to gas turbine combustors, namely reduce the swirl. The intent of this proposal is to study the feasibility of the haney Swirler which consists of a set of vanes at the trailing edge of a downward curved tip, specifically a Sargent type tip. The standard wing tip would be modified to turn the outward flow downward and also to direct the remaining horizontal flow that is still swirling to the Haney Swirler vanes. The vanes would then reduce the tangential velocity of the swirling flow and increase its down stream velocity, resulting in a significant reduction in induced drag. The tips would be designed and models would be built for test in a wind tunnel. To facilitate comparison, we propose a four part test program. First, test a wing with a normal tip. Second, test a wing with a commercial winglet. Third, test a wing using a Sargent tip, and the fourth, testa wing with the Haney Swirler tip configuraiton. The tests would be conducted in the University of Toledo wind tunnel which has developed equipment and techniques to study vortex flow in conjunction with the NASA Langely Research Center. The data will be analyzed and a report will be published.

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

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