公开(公告)号：USD413560S

公开(公告)日：1999-09-07

申请号：US91961

申请日：1998-08-10

申请人： Kenneth William Sambell

设计人： Kenneth William Sambell

公开(公告)号：US20100072325A1

公开(公告)日：2010-03-25

申请号：US12356585

申请日：2009-01-21

申请人： Kenneth William Sambell

发明人： Kenneth William Sambell

IPC分类号： B64C27/22 ,  B64C29/00

CPC分类号： B64C29/0033 ,  B64C11/28 ,  B64C27/50

摘要： This is an improvement of the 1968 Trailing Rotor V/STOL aircraft (Ref. 1). Rotors are mounted on wing-tip pods which can be tilted from the vertical to the horizontal aft position. Rotors are then stopped in the axial-flow condition and indexed to an azimuth position, aft of the wing trailing-edge. Rotor blades are then folded forward (blade-tips upstream of rotor-hubs) and locked into grooves in the tip-pods.The main improvements over Ref. 1 are: a smaller shift of center-of-gravity during transition to cruise mode, and an easier task of locking blades into the tip-pods.The main feature of the autorotative aft rotor tilt is that a soft-inplane rotor can be used, which reduces rotor weight. The blade-folding axis is also the blade-flapping axis.The autorotative mode is used frequently by helicopters during descent. It has been found to be a good, stable mode with rpm-stability. During aft tilt on the UFR, the rotors provide pitching stability to the airframe. During stopping of the rotor, the stability of the autorotating rotor eases the task of passing thru rotor resonance.Also, the wing can be swept back, which is desirable for 400 kt. cruise speeds and can be used for external stores such as fuel and weapons.

摘要翻译： 这是1968年后退转子V / STOL飞机的改进（参考文献1）。 转子安装在翼尖荚上，可从垂直方向倾斜到水平后方。 然后转子在轴向流动状态下停止并且被转位到方位角位置，后翼的后缘。 然后将转子叶片向前折叠（转子轮毂上游的叶片尖端）并锁定在尖端荚中的凹槽中。 参考文献的主要改进。 1是：在过渡到巡航模式期间重心的移动较小，并且更容易将叶片锁定到尖端荚中。 自转式后转子倾斜的主要特征是可以使用软平面转子，这降低了转子的重量。 叶片折叠轴线也是叶片拍动轴。 直升机在下降期间经常使用自动模式。 已经发现这是一个良好的稳定的转速稳定模式。 在UFR的后倾倾斜时，转子为机身提供俯仰稳定性。 在转子停转期间，自转转子的稳定性减轻了通过转子共振的任务。 此外，机翼可以扫过，这对于400 kt是理想的。 巡航速度，可用于外部商店，如燃料和武器。