发明授权
- 专利标题: Radar energy absorbing deformable low drag vortex generator
- 专利标题(中): 雷达能量吸收可变形低阻涡流发生器
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申请号: US14144526申请日: 2013-12-30
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公开(公告)号: US09416802B2公开(公告)日: 2016-08-16
- 发明人: Ronald M. Barrett
- 申请人: University of Kansas
- 申请人地址: US KS Lawrence
- 专利权人: University of Kansas
- 当前专利权人: University of Kansas
- 当前专利权人地址: US KS Lawrence
- 代理机构: Husch Blackwell LLP
- 代理商 Mark E. Stallion, Esq.
- 主分类号: B64C23/06
- IPC分类号: B64C23/06 ; F15D1/00 ; B64C21/02 ; H01Q17/00
摘要:
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.
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