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    • 3. 发明授权
    • Universal camera mounting assembly
    • 通用相机安装组件
    • US06425697B1
    • 2002-07-30
    • US09524649
    • 2000-03-13
    • Jeff C. PottsRichard M. Allen
    • Jeff C. PottsRichard M. Allen
    • G03B1700
    • F41A33/00F41C27/00G03B29/00
    • A camera mounting assembly for a weapon is provided. The mounting assembly includes a mount for direct attachment to the weapon. A parallelogram linkage includes a pair of depending swing arms, each of which is pivotally secured at one end in the mount and at the opposite end in a camera support. The support also includes a transverse slot for receiving a stud or other mount carried by a camera. When the weapon is discharged, the swing arms allow the camera and support to together swing to and fro in response to the forces generated. During this swinging motion, the support and hence the camera are both maintained substantially aligned with the line-of-sight of the weapon at all times, thereby ensuring that the shoot is reliably captured. Dampers may also be provided to dampen the swinging motion of the camera created upon discharge. The combination of the swinging and damping improves the capture of the shoot by reducing the effects of the recoil or discharge forces. Also, since the camera is not in direct contact with the weapon, the potential for shock damage is significantly reduced.
    • 提供了一种用于武器的照相机安装组件。 安装组件包括用于直接附接到武器的安装座。 平行四边形连杆机构包括一对悬垂摆臂,每个摆臂在一端枢转地固定在安装座中,另一端枢转固定在摄像机支架中。 支撑件还包括用于接收由照相机承载的螺柱或其它安装座的横向槽。 当武器被排出时,摆臂允许照相机和支撑件一起响应于所产生的力来回摆动。 在这种摆动运动中,支撑件和照相机始终保持与武器的视线大致对准,从而确保拍摄被可靠地捕获。 还可以设置阻尼器以抑制在放电时产生的相机的摆动运动。 摇摆和阻尼的组合通过减少反冲或排出力的影响来改善拍摄的捕获。 另外,由于摄像机不与武器直接接触,因此显着降低了冲击损坏的可能性。
    • 4. 发明授权
    • Tone injected nacelle for aeroacoustic wind tunnel testing
    • Tone注入机舱用于航空声学风洞测试
    • US4817422A
    • 1989-04-04
    • US107675
    • 1987-10-13
    • Richard M. Allen
    • Richard M. Allen
    • G01M9/04G01M9/00G01M15/00
    • G01M9/04
    • An aeroacoustical test apparatus for evaluating a component. The apparatus includes a primary exhaust generating means which detects a primary gaseous flow through a primary passageway and out the primary nozzle. The apparatus further includes a secondary bypass flow generating means which directs bypass flow through a bypass passageway and out the secondary nozzle. An acoustical energy generating means having a sound transmitting axis is substantially centered on the longitudinal center axis of the apparatus. The acoustical energy generating means projects acoustical energy through a first centrally located acoustical coupler and a plurality of secondary acoustical couplers which extend around the primary exhaust generating means and into the secondary bypass passageway to cause the acoustical energy to exit from the secondary nozzle. Acoustical energy is generated by the acoustical energy generating means and acoustical energy flows into the first acoustical coupler and expands as it goes into the plurality of secondary acoustical couplers and expands further as it goes into the annular bypass passageway. The introduction of acoustical energy into the air in the annular bypass passageway results in the generation in that passageway of fan noise which would be created in the bypass duct of a jet engine employing the nozzle assembly being tested under actual operating conditions. A method for evaluating a component is also disclosed.
    • 一种用于评估部件的航空声学测试装置。 该装置包括主排气产生装置,其检测通过主通道并从主喷嘴排出的初级气流。 该装置还包括辅助旁通流产生装置,其引导旁路流通过旁路通道并从次喷嘴排出。 具有声音传播轴的声能发生装置基本上位于装置的纵向中心轴线上。 声能发生装置通过第一中心定位的声耦合器和多个辅助声耦合器来发出声能,该声耦合器围绕初级排气发生装置延伸并进入次级旁路通道以使声能从次喷嘴排出。 声能由声能发生装置产生并且声能流入第一声耦合器并且随着进入多个次级声耦合器而膨胀,并且随着其进入环形旁路通道而进一步膨胀。 将声能引入环形旁路通道中的空气导致在该通道中产生将在实际操作条件下测试喷嘴组件的喷气发动机的旁路管道中产生的风扇噪声。 还公开了一种用于评估部件的方法。