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公开(公告)号：EP2219942B2
公开(公告)日：2016-08-24
申请号：EP08860968.0
申请日：2008-09-18
申请人： The Boeing Company
CPC分类号： B64C21/04 , B64C9/38 , Y02T50/166
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2.发明授权
公开(公告)号：EP2214958B1
公开(公告)日：2011-08-17
申请号：EP08843602.7
申请日：2008-09-19
申请人： The Boeing Company
CPC分类号： B64C9/38 , B64C3/58 , B64C7/00 , B64C21/04 , B64C2230/04 , Y02T50/166
摘要： Lift produced by an airfoil of an aircraft is increased by suppressing fluid detachment from the surface of the airfoil. An engine cowling (102) extends outwardly from the surface of the airfoil that has an exit plane (202) configured for directing exhaust gases toward a rear of the aircraft. Fences (106, 107, 108, 109) extending outwardly from the surface and proximate to the exit plane of the engine cowling are configured to guide the exhaust gases along at least a portion of the airfoil surface, thereby restricting spanwise movement of the gases and increasing the Coanda Effect exhibited by the gases, thereby increasing the amount of lift produced along the surface of the airfoil. Such techniques may be used in short take-off and landing (STOL) aircraft.
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公开(公告)号：EP2219942A2
公开(公告)日：2010-08-25
申请号：EP08860968.0
申请日：2008-09-18
申请人： The Boeing Company
CPC分类号： B64C21/04 , B64C9/38 , Y02T50/166
摘要： Coanda.Effect and lift produced along a surface of an airfoil are increased by- ducting (112) compressed fluid from the engine to the surface of the airfoil. An engine produces exhaust gases that are predominantly directed toward an aft end of the aircraft by a cowling (102) or other structure as an exhaust plume. One or more internal ducts extend (112) from the engine to the surface of the airfoil to thereby transmit a compressed fluid from the engine to the surface in order to suppress flow separation along the surface, thereby causing the engine exhaust flow to remain attached to the surface over a wider span. Such structures and techniques may find particular use in aircraft designed to exploit upper surface blowing (USB) techniques and structures for short takeoff and landing (STOL) performance.
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公开(公告)号：EP2219942B1
公开(公告)日：2013-07-03
申请号：EP08860968.0
申请日：2008-09-18
申请人： The Boeing Company
CPC分类号： B64C21/04 , B64C9/38 , Y02T50/166
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5.发明公开
公开(公告)号：EP2214958A1
公开(公告)日：2010-08-11
申请号：EP08843602.7
申请日：2008-09-19
申请人： The Boeing Company
CPC分类号： B64C9/38 , B64C3/58 , B64C7/00 , B64C21/04 , B64C2230/04 , Y02T50/166
摘要： Lift produced by an airfoil of an aircraft is increased by suppressing fluid detachment from the surface of the airfoil. An engine cowling (102) extends outwardly from the surface of the airfoil that has an exit plane (202) configured for directing exhaust gases toward a rear of the aircraft. Fences (106, 107, 108, 109) extending outwardly from the surface and proximate to the exit plane of the engine cowling are configured to guide the exhaust gases along at least a portion of the airfoil surface, thereby restricting spanwise movement of the gases and increasing the Coanda Effect exhibited by the gases, thereby increasing the amount of lift produced along the surface of the airfoil. Such techniques may be used in short take-off and landing (STOL) aircraft.
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