公开(公告)号：US5897077A

公开(公告)日：1999-04-27

申请号：US693514

申请日：1996-08-02

Applicant: Robert E. Head

Inventor： Robert E. Head

IPC: B64C25/52 ,  B64C25/66

CPC classification number: B64C25/66 ,  B64C25/52 ,  B64C2025/325

Abstract: A low-profile transportation and storage assembly is readily substitutable with a conventional pair of skid landing gear. The low-profile transportation and storage assembly includes a front auxiliary crosstube having low-profile wheels attached to opposing ends of the front auxiliary crosstube, and a rear auxiliary crosstube having low-profile wheels attached to opposing ends of the rear auxiliary crosstube. Both the front auxiliary crosstube and the rear auxiliary crosstube are readily substitutable with the pair of skid landing gear of a conventional helicopter. A pair of front saddle mounts and a pair of rear saddle mounts secure the front crosstube and the back crosstube of the pair of skid landing gear to the helicopter. The pair of front saddle mounts and the pair of rear saddle mounts can be quickly removed from the aft crosstube and the forward crosstube by removal of expandable bushing fittings of the saddle mounts. These same saddle mounts or other saddle mounts can then be used to quickly and conveniently secure the front auxiliary crosstube and the rear auxiliary crosstube to the helicopter to thereby facilitate transportation and low-profile storage of the helicopter. An improved tail skid mount fitting is provided for holding the tail skid in one of an operating configuration and a low-profile storage configuration. The low-profile storage configuration of the tail skid surrounds and protects a portion of the tailboom of the helicopter.

Abstract translation: 低调的运输和存储组件可以用常规的一对防滑起落架来替代。 低调的运输和存储组件包括具有附接到前辅助交叉管的相对端的低轮的前辅助交叉管和具有附接到后辅助交叉管的相对端的小轮的后辅助交叉管。 前辅助交叉管和后辅助交叉管都可以用常规直升机的一对防滑起落架来代替。 一对前鞍座和一对后鞍座安装在一对防滑起落架的前交叉管和后交叉管固定在直升机上。 一对前鞍座和一对后鞍式安装座可以通过拆卸鞍座的可膨胀套管配件，从后方交叉管和前方交叉管中快速拆除。 然后可以使用这些相同的鞍形安装座或其它鞍形安装件来将前辅助交叉管和后辅助交叉管快速方便地固定到直升机，从而便于直升机的运输和低调存储。 提供了一种改进的防滑装配配件，用于将尾部滑行件保持在操作配置和低轮廓存储配置之一中。 尾部滑行架的低调存储配置围绕并保护直升机的尾部的一部分。

公开(公告)号：US4381902A

公开(公告)日：1983-05-03

申请号：US105545

申请日：1979-12-20

Applicant: Robert E. Head ,  Debashis Banerjee

Inventor： Robert E. Head ,  Debashis Banerjee

IPC: B64C27/33 ,  B64C27/38

CPC classification number: B64C27/33 ,  Y10S416/50

Abstract: A fiberglass-epoxy flexbeam extends from tip to tip of each opposed blade pair, carrying the blade centrifugal forces so that none of the centrifugal loading is carried by the hub. The primary load-carrying connector between the flexbeam and the hub is a set of elastomeric pads. These provide a soft mount between the flexbeam and the hub to keep the primary bending moments within the flexbeams where the filaments are designed to accommodate them. The elastomeric pads are also effective in isolating the hub from chordwise loads which include the steady driving torque and the "C" mode and "S" modes of coriolis vibration. The elastomeric hub mount damps these vibrations and tunes their frequencies to values well separated from the rotor frequency.

Abstract translation: 玻璃纤维 - 环氧树脂柔性梁从每个相对的叶片对的尖端延伸到尖端，承载叶片的离心力，使得离心加载不会由轮毂承载。 柔性梁和轮毂之间的主要承载连接器是一组弹性垫。 这些在柔性梁和轮毂之间提供柔性安装，以将主弯曲力保持在柔性梁内，其中细丝被设计成容纳它们。 弹性垫片也有效地将轮毂与弦向负载隔离，包括稳定的驱动转矩和科里奥利振动的“C”模式和“S”模式。 弹性轮毂安装件可以减震这些振动，并将其频率调谐到与转子频率相分离的值。

公开(公告)号：US5915649A

公开(公告)日：1999-06-29

申请号：US697367

申请日：1996-08-23

Applicant: Robert E. Head

Inventor： Robert E. Head

IPC: B64C37/00 ,  B64C27/22

CPC classification number: B64C37/00

Abstract: A roadable helicopter according to various aspects of the present invention comprises a vehicle that drives like a conventional car in its road configuration, and converts to fly like a helicopter in its flight configuration. The operator of the helicopter only needs to press a button to initiate the conversion from one configuration to the other. To facilitate the flight configuration, the helicopter is preferably equipped with a dual, coaxial counterrotating rotor system to provide lift, propulsion, and control in the flight configuration. In the road configuration, however, the rotor system automatically folds into a rotor bay formed in the rear of the helicopter. The roadable helicopter may also include an automatic control/stability/navigation system that permits fully automatic flight.

Abstract translation: 根据本发明的各个方面的可行驶的直升机包括在其道路构造中像传统汽车一样驱动的车辆，并且像飞行配置中的直升机一样转换成飞行。 直升机的操作者只需要按一个按钮来启动从一个配置到另一个配置的转换。 为了方便飞行配置，直升机最好装备有一个双重同轴的逆转转子系统，用于提供飞行结构中的提升，推进和控制。 然而，在道路构造中，转子系统自动地折叠成形成在直升机后部的转子槽。 可行驶直升机还可以包括允许全自动飞行的自动控制/稳定/导航系统。

公开(公告)号：US5403155A

公开(公告)日：1995-04-04

申请号：US169616

申请日：1993-12-17

Applicant: Robert E. Head ,  Channing S. Morse ,  Thomas G. Ashe

Inventor： Robert E. Head ,  Channing S. Morse ,  Thomas G. Ashe

IPC: B64C13/04 ,  B64C27/56 ,  B64D31/04

CPC classification number: B64C27/56 ,  B64D31/04 ,  Y10T74/20612 ,  Y10T74/20636

Abstract: An engine control system for a helicopter having at least one engine is provided, including an electronic engine control unit for each engine and further including a manually operated system for backing up each electronic engine control unit in the event of a failure thereof or for permitting optional manual engine operation. The engine control system includes at least one collective pitch stick and at least one twist grip rotatably mounted on the collective pitch stick. Each twist grip includes a normal (NORM) position within the range of the operating arc which is coincident with a detent. The system includes means for electronically actuating the detent to retract when the twist grip is rotated out of the NORM position into a manual operating mode, so that the electronic disablement of the detent permits an operator to smoothly operate the twist grip through the operating arc when the engine control system is in a manual control mode. The twist grip further includes an additional arc of travel past the idle stop to an OFF position, wherein fuel flow to its corresponding engine is cut off. Significantly, the system includes an electrically actuated mechanical gate over which the twist grip must pass to enter or exit the OFF position. The gate is normally biased closed, and may be opened electrically by means of a pilot-actuated off release pushbutton to enter the OFF position, or may be opened mechanically by twisting the twist grip against the bias to exit the OFF position.

Abstract translation: 提供一种用于具有至少一个发动机的直升机的发动机控制系统，其包括用于每个发动机的电子发动机控制单元，并且还包括手动操作的系统，用于在每个电子发动机控制单元发生故障或备用 手动引擎操作。 发动机控制系统包括至少一个集体节距杆和至少一个可旋转地安装在集体节距杆上的扭转夹具。 每个扭转夹具包括与制动器一致的操作弧范围内的正常（NORM）位置。 该系统包括用于当扭转手柄旋转到NORM位置进入手动操作模式时电子致动棘爪以缩回的装置，使得棘爪的电子禁用允许操作者通过操作电弧平稳地操作扭转手柄 发动机控制系统处于手动控制模式。 扭转夹具还包括经过怠速停止的附加弧线到OFF位置，其中切断其对应的发动机的燃料流。 重要的是，该系统包括电致动的机械闸门，扭转夹具必须通过该闸门进入或离开关闭位置。 门通常被偏置关闭，并且可以通过先导致动的释放按钮电打开以进入关闭位置，或者可以通过扭转扭转夹紧力抵抗偏置位置而机械地打开。

公开(公告)号：US4695227A

公开(公告)日：1987-09-22

申请号：US706444

申请日：1985-02-27

Applicant: Robert E. Head ,  Samuel S. Yao

Inventor： Robert E. Head ,  Samuel S. Yao

IPC: B64C27/41 ,  B64C27/35 ,  B64C27/52

CPC classification number: B64C27/41

Abstract: A universal joint for use in a pitch cone rotor system in a helicopter is comprised of crossed lift beams, one beam of which is coupled to the rotor hub and the other beam of which is coupled to the driven rotor shaft. The two crossed lift beams are coupled to each other through a cruciform case. The cruciform case in turn is coupled to each of the crossed lift beams by means of a plurality of flexures. The flexures and cruciform case are made of composite fiber materials and the flexures are soft enough to permit angular and translational deflections of the crossbeams with respect to each other thereby tending to smooth out and reduce sudden changes in rotor speed between the shaft and rotor system and thereby tending to make rotor speeds more uniform. The crossed lift beams are further coupled together at the center of their crossing by a flexible elastomeric tension link which conducts rotor loads between the two beams when the rotor develops negative lift loads on the ground and in flight. A hollow laminated elastomeric compression fitting is placed between the beams at their center to transmit the rotor lift force between them.

Abstract translation: 用于直升机中的俯仰锥体转子系统的万向接头由交叉提升梁组成，其中一个梁联接到转子轮毂，另一个梁联接到从动转子轴。 两个交叉的提升梁通过十字形的壳体彼此联接。 十字形壳体依次通过多个挠曲件联接到每个交叉提升梁上。 弯曲和十字形壳体由复合纤维材料制成，并且挠曲足够柔软以允许横梁相对于彼此的角度和平移偏转，从而倾向于平滑并减少轴和转子系统之间的转子速度的突然变化，并且 从而趋于使转子速度更均匀。 交叉的升降梁在其交叉的中心处通过柔性弹性张力连接件进一步联接在一起，当弹簧在地面和飞行中转子产生负的升力负载时，该弹性张力连接件在两个梁之间传递转子负载。 中空的层压弹性体压缩配件放置在梁之间的中心，以在它们之间传递转子提升力。

公开(公告)号：US5626312A

公开(公告)日：1997-05-06

申请号：US271120

申请日：1994-07-06

Applicant: Robert E. Head

Inventor： Robert E. Head

IPC: B64C27/615 ,  B64C27/68 ,  H01L41/09 ,  B64C13/24

CPC classification number: H02N2/10 ,  B64C27/615 ,  B64C27/68 ,  B64C2027/7277 ,  B64C2027/7283 ,  Y02T50/34

Abstract: A piezoelectric actuator includes a plurality of linearly axially expandable hard piezoelectric rods located between two plates and are distributed about a central twistable core fastened between the plates, with the axis of the rod skew to the axis of the core, resembling a squirrel cage. The actuator produces a twisting movement between the plates, responsive to voltage induced expansion of those piezoelectric rods. Fly by Wire aircraft control is realized with the actuator in various systems providing all electric control of aerodynamic surfaces, including an electronic helicopter swashplate by which the effective pitch of the main rotor blade is controlled.

Abstract translation: 压电致动器包括位于两个板之间的多个线性可轴向膨胀的硬压电棒，并且围绕固定在板之间的中心可扭转芯分布，杆的轴线偏心于芯的轴线，类似于鼠笼。 致动器响应于这些压电杆的电压引起的膨胀而在板之间产生扭转运动。 飞行控制飞行器控制是通过各种系统中的致动器实现的，其中提供了空气动力学表面的所有电气控制，包括控制主转子叶片的有效间距的电子直升机旋转斜盘。

公开(公告)号：US3597785A

公开(公告)日：1971-08-10

申请号：US3597785D

申请日：1969-06-11

Applicant: ROBERT E HEAD ,  NORMAN P ZINDA

Inventor： ZINDA NORMAN P

IPC: A47L13/52 ,  A47L13/40

CPC classification number: A47L13/52

Abstract: A dustpan or tray having a front edge to be held against the surface to be cleaned and the dirt or debris is adapted to be swept across the front edge into the pan. A resilient roller is mounted for rotation on the under surface of the pan and extends generally parallel to the front edge. The roller aids in positioning the front edge at the proper angle during sweeping of debris into the pan and, after sweeping, the roller is adapted to be rolled over the ridge of residual dirt remaining on the surface. The residual dirt clings to the roller so that all of the residual dirt can be removed.

公开(公告)号：US5934875A

公开(公告)日：1999-08-10

申请号：US987259

申请日：1997-12-09

Applicant: Robert E. Head

Inventor： Robert E. Head

IPC: B64C27/04 ,  A47C7/74

CPC classification number: B64C27/12 ,  B64C27/04

Abstract: A helicopter's main rotor blades are removably attached to a hub, which is rotatably mounted on a mast. The base of the mast is attached to the helicopter's body by unthreaded, expandable bushing bolts. When inserted, the bolts' centerlines lie in a plane which perpendicularly intersects the axial centerline of the mast. The mast is hollow and encases a drive shaft. Splines at one end of the drive shaft removably engage splines on the engine transmission. The hub has a removal fitting for engaging an end of the drive shaft. When the mast is detached and pulled apart from the helicopter body for storage, the removal fitting forces the drive shaft splines to disengage from the tnansmission splines, and keeps the drive shaft inside the mast while the mast is being removed. The main rotor blades' pitch is controlled by a plurality of pitch control linkages. Each linkage is comprised of a first part connected to the mast and a second part connected to the helicopter body. The two parts of each linkage are connected solely by an expandable bushing bolt. Removal of the bolt allows the two parts to be disconnected pursuant to removal of the mast from the body, and keeps the first part attached to the mast during the removal and afterwards. Reaachment of the mast to the helicopter body is accomplished by the reverse of the foregoing operations.

Abstract translation: 直升机的主转子叶片可拆卸地连接到轮毂，轮毂可旋转地安装在桅杆上。 桅杆的基座通过无螺纹的可扩展衬套螺栓连接到直升机的身体。 当插入时，螺栓的中心线位于与桅杆的轴向中心线垂直相交的平面中。 桅杆是空心的并且包围驱动轴。 驱动轴一端的花键可拆卸地接合发动机变速箱上的花键。 轮毂具有用于接合驱动轴的端部的拆卸配件。 当桅杆被拆卸并从直升机主​​体分离以进行存储时，拆卸配合件迫使驱动轴花键与断层花键脱离，并且在桅杆被移除的同时将驱动轴保持在桅杆内。 主转子叶片的间距由多个俯仰控制连杆控制。 每个联动装置包括连接到桅杆的第一部分和连接到直升机主体的第二部分。 每个连杆的两个部分仅由可扩展的衬套螺栓连接。 螺栓的拆除允许两个部件根据桅杆从主体上的拆卸而断开，并且在拆卸和之后将第一部件保持在桅杆上。 通过与前述操作相反的方式，将桅杆重新连接到直升机身上。