Invention Grant
- Patent Title: Radar energy absorbing deformable low drag vortex generator
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Application No.: US15227921Application Date: 2016-08-03
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Publication No.: US09677580B2Publication Date: 2017-06-13
- Inventor: Ronald M. Barrett
- Applicant: University of Kansas
- Applicant Address: US KS Lawrence
- Assignee: University of Kansas
- Current Assignee: University of Kansas
- Current Assignee Address: US KS Lawrence
- Agency: Husch Blackwell LLP
- Agent Mark E. Stallion, Esq.
- Main IPC: F15D1/00
- IPC: F15D1/00 ; B64C23/06 ; G03G13/26 ; G03G13/28

Abstract:
A family of Radar energy Absorbing Deformable Low Drag Vortex Generators (RAD-LDVG) is described herein. This family of devices are fabricated in such a way that it can conform to aircraft surface features while reducing radar returns from structural details. Vortex generators (VGs) are typically used to reattach or smooth gross flowfields over aircraft surfaces. By doing so, an airfoil or wing can maintain attached flow at higher angles of attack and/or higher lift coefficients than one without the VGs. These devices are also used to reattach and/or smooth flows that encounter crossflow-induced instabilities and/or adverse pressure gradients on the upper surfaces of wings or near aircraft boattails. Other uses include reduction of buffet, vibration, flutter, cavity resonance or general bluff-body pressure drag reduction. Although conventional rigid VGs do generate vortical aerodynamic structures, two major problems are often experienced: i.) the inability to conform to curved surfaces, ii.) the generation of radar cross-section spikes produced by the VGs themselves.
Public/Granted literature
- US20170137115A1 RADAR ENERGY ABSORBING DEFORMABLE LOW DRAG VORTEX GENERATOR Public/Granted day:2017-05-18
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