Invention Grant
- Patent Title: Flow control techniques for delaying or accelerating laminar-turbulent boundary-layer transition for high-speed flight vehicles
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Application No.: US17134047Application Date: 2020-12-24
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Publication No.: US11981421B2Publication Date: 2024-05-14
- Inventor: Hermann F. Fasel , Christoph Hader
- Applicant: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
- Applicant Address: US AZ Tucson
- Assignee: Arizona Board of Regents on behalf of the University of Arizona
- Current Assignee: Arizona Board of Regents on behalf of the University of Arizona
- Current Assignee Address: US AZ Tucson
- Agency: Blank Rome LLP
- Main IPC: B64C21/04
- IPC: B64C21/04 ; B64C21/06 ; B64C23/00 ; B64C30/00

Abstract:
A system and method for controlling boundary layer transition for a high-speed vehicle are disclosed. The method includes determining a location of onset of boundary-layer transition that naturally develops during high-speed flight of the high-speed vehicle, and providing a pair of flow control strips at a surface/wall/skin of the high-speed vehicle such that the boundary-layer transition is delayed or prevented during high-speed flight of the high-speed vehicle. The delayed or prevented locations of the transition result in a change in the high-speed boundary layer during the high-speed flight of the high-speed vehicle. The change in the high-speed boundary layer transition affects skin friction drag, aero-thermodynamic heating, and pressure fluctuations in the boundary layer of the high-speed vehicle.
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