公开(公告)号：EP1289831B1

公开(公告)日：2003-12-10

申请号：EP01921639.9

申请日：2001-04-20

申请人： BAE SYSTEMS plc

发明人： WARSOP, Clyde ,  WOODS, Mike ,  HENDERSON, James ,  LOCK, Gary, School of Engineering

IPC分类号： B64C39/02 ,  B64C39/06

CPC分类号： B64C39/062 ,  B64C2201/028 ,  B64C2201/042 ,  B64C2201/162

摘要： This invention relates to ring-wing aircraft and is suited particularly, although not exclusively, to use in micro-unmanned air vehicles (UAV's) with ring-wings. An aircraft (10) according to the invention comprises a ring-wing (11) defining a duct (16) with a longitudinally-extending central axis (31), propulsion means (15) located within the duct and moveable aerofoils (13, 18) for controlling the aircraft in flight, the ring-wing being truncated obliquely at one end, that end being the rear (11b) when in horizontal flight, to form a ring-wing with opposed sides of unequal length. This arrangement produces centre of mass offset from the central axis of the ring-wing, the pendulum effect will ensure that the aircraft will roll so that its centre of mass will always be at the lowest height possible when the aircraft is airborne. Therefore the aircraft has a preferred orientation, and the control surfaces can be oriented with respect to this preferred orientation. In addition, the oblique truncation at the rear keeps the centre of mass towards the front of the aircraft thereby giving improved stability in all three axes.

公开(公告)号：EP1289831A1

公开(公告)日：2003-03-12

申请号：EP01921639.9

申请日：2001-04-20

申请人： BAE SYSTEMS plc

发明人： WARSOP, Clyde ,  WOODS, Mike,School of Engineering ,  HENDERSON, James ,  LOCK, Gary,School of Engineering

IPC分类号： B64C39/02 ,  B64C39/06

CPC分类号： B64C39/062 ,  B64C2201/028 ,  B64C2201/042 ,  B64C2201/162

摘要： This invention relates to ring-wing aircraft and is suited particularly, although not exclusively, to use in micro-unmanned air vehicles (UAV's) with ring-wings. An aircraft (10) according to the invention comprises a ring-wing (11) defining a duct (16) with a longitudinally-extending central axis (31), propulsion means (15) located within the duct and moveable aerofoils (13, 18) for controlling the aircraft in flight, the ring-wing being truncated obliquely at one end, that end being the rear (11b) when in horizontal flight, to form a ring-wing with opposed sides of unequal length. This arrangement produces centre of mass offset from the central axis of the ring-wing, the pendulum effect will ensure that the aircraft will roll so that its centre of mass will always be at the lowest height possible when the aircraft is airborne. Therefore the aircraft has a preferred orientation, and the control surfaces can be oriented with respect to this preferred orientation. In addition, the oblique truncation at the rear keeps the centre of mass towards the front of the aircraft thereby giving improved stability in all three axes.

摘要翻译： 本发明涉及环翼飞机，特别适用于具有环翼的微型无人驾驶飞行器（UAV），尽管不是唯一的。 根据本发明的飞行器（10）包括限定具有纵向延伸的中心轴线（31）的管道（16）的环翼（11），位于管道内的推进装置（15）以及位于管道内的可移动翼面（13,18 ）用于控制飞行中的飞行器，环翼在一端倾斜地截断，该端在水平飞行时是后部（11b），以形成具有不等长度的相对侧的环翼。 这种布置会产生偏离环翼中心轴线的质量中心，摆动效应将确保飞机在滚转时使其质心始终处于飞机悬空时的最低高度。 因此，飞机具有优选的定向，并且控制表面可以相对于该优选的定向取向。 另外，后部的倾斜截断使质心保持在飞机的前部，从而提高了所有三个轴的稳定性。