公开(公告)号：US08998125B2

公开(公告)日：2015-04-07

申请号：US13576612

申请日：2010-06-15

Applicant: Charles Hollimon ,  Dudley E. Smith ,  David Ludolph

Inventor： Charles Hollimon ,  Dudley E. Smith ,  David Ludolph

IPC: B64C27/28 ,  B64C29/00 ,  B64C27/30

CPC classification number: B64C29/0033 ,  B64C27/28 ,  B64C27/30

Abstract: A foldable rotor system for a rotorcraft, the foldable rotor system comprising a rotor assembly operably associated with a driveshaft, the driveshaft being operable associated with an engine, the rotor assembly comprising a rotor blade connected to a grip pin. A swashplate is operable associated with the grip pin in order selectively change a pitch of the rotor blade. A blade fold actuator is operably associated with the grip pin such that the blade fold actuator is configured to fold and unfold the rotor blade about a blade fold axis. During an airplane mode, the rotorcraft can stop and fold the rotor blades so that the rotorcraft relies upon thrust from the engine for propulsion. The rotor blades are folded in a spiral fold path so that the rotor blades remain substantially edgewise, or feathered, during the folding process. The spiral fold path minimizes the aerodynamic drag experienced by the rotor blades while being folded during flight of the rotorcraft.

Abstract translation: 一种用于旋翼航空器的可折叠转子系统，所述可折叠转子系统包括与驱动轴可操作地相关联的转子组件，所述驱动轴可与发动机相关联，所述转子组件包括连接到夹紧销的转子叶片。 旋转斜盘可操作地与夹紧销相关联，以便选择性地改变转子叶片的间距。 叶片折叠致动器可操作地与抓持销相关联，使得叶片折叠致动器构造成围绕叶片折叠轴线折叠和展开转子叶片。 在飞机模式期间，旋翼航空器可以停止和折叠转子叶片，使得旋翼飞机依靠来自发动机的推力用于推进。 转子叶片以螺旋折叠路径折叠，使得转子叶片在折叠过程中保持基本上沿边缘或羽状。 螺旋折叠路径使转子叶片在旋翼飞机飞行期间被折叠时所经历的空气动力学阻力最小化。

公开(公告)号：US20120292456A1

公开(公告)日：2012-11-22

申请号：US13576612

申请日：2010-06-15

Applicant: Charles Hollimon ,  Dudley E. Smith ,  David Ludolph

Inventor： Charles Hollimon ,  Dudley E. Smith ,  David Ludolph

IPC: B64C27/30 ,  B64C11/28 ,  B64C27/26 ,  F01D7/00

CPC classification number: B64C29/0033 ,  B64C27/28 ,  B64C27/30

Abstract: A foldable rotor system for a rotorcraft, the foldable rotor system comprising a rotor assembly operably associated with a driveshaft, the driveshaft being operable associated with an engine, the rotor assembly comprising a rotor blade connected to a grip pin. A swashplate is operable associated with the grip pin in order selectively change a pitch of the rotor blade. A blade fold actuator is operably associated with the grip pin such that the blade fold actuator is configured to fold and unfold the rotor blade about a blade fold axis. During an airplane mode, the rotorcraft can stop and fold the rotor blades so that the rotorcraft relies upon thrust from the engine for propulsion. The rotor blades are folded in a spiral fold path so that the rotor blades remain substantially edgewise, or feathered, during the folding process. The spiral fold path minimizes the aerodynamic drag experienced by the rotor blades while being folded during flight of the rotorcraft.

Abstract translation: 一种用于旋翼航空器的可折叠转子系统，所述可折叠转子系统包括与驱动轴可操作地相关联的转子组件，所述驱动轴可与发动机相关联，所述转子组件包括连接到夹紧销的转子叶片。 旋转斜盘可操作地与夹紧销相关联，以便选择性地改变转子叶片的间距。 叶片折叠致动器可操作地与抓持销相关联，使得叶片折叠致动器构造成围绕叶片折叠轴线折叠和展开转子叶片。 在飞机模式期间，旋翼航空器可以停止和折叠转子叶片，使得旋翼飞机依靠来自发动机的推力用于推进。 转子叶片以螺旋折叠路径折叠，使得转子叶片在折叠过程中保持基本上沿边缘或羽状。 螺旋折叠路径使转子叶片在旋翼飞机飞行期间被折叠时所经历的空气动力学阻力最小化。