A bracket for measuring the installation angle of propeller hub support arm
A technology of installation angle and propeller hub, which is applied in the field of support for measuring the installation angle of propeller hub support arm, and can solve problems such as large radius of propeller hub support arm, notch installation, poor portability and accuracy of measurement, and impact on personal safety, etc.
Active Publication Date: 2020-11-03
CHINA HELICOPTER RES & DEV INST
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Problems solved by technology
In order to accurately reflect the change of the installation angle of the propeller, especially for large and medium-sized helicopters, the radius of the propeller arm is large, and the installation and measurement portability of the marking instrument are extremely difficult without special equipment support conditions (such as maintenance ladders). Poor accuracy and may even affect personal safety
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[0016] In order to make the objectives, technical solutions and advantages of the implementation of the application clearer, the technical solutions in the implementation modes of the application will be described in more detail below with reference to the drawings in the implementation modes of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the present application. The embodiments described below by referring to the figures are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of this application. Embodiments of the pr...
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The invention provides a support for measuring the paddle hub supporting arm installation angle, and belongs to the technical field of helicopter testing. The support comprises a paddle pin cylinder (1) and a measuring device installing plate (2). A through hole running through the paddle pin cylinder (1) is formed in the measuring device installing plate (2), a fixing device is arranged at the outer side of a cylinder body of the paddle pin cylinder (1), when the paddle pin cylinder (1) alternately runs through the through hole, the fixing device is fixedly connected with the measuring deviceinstalling plate (2), the measuring device installing plate (2) is provided with a positioning stop edge, and the positioning stop edge is perpendicular to the pitch axis of the paddle. The support is easy to machine and convenient to use, meanwhile, the flight control system adjustment checking efficiency and safety are greatly improved, the paddle pin cylinder and the measuring device installing plate are changed through adaptability, and the support can be widely applied to measuring work of the helicopter hub supporting arm installation angle.
Description
technical field [0001] The application belongs to the technical field of helicopter testing, and in particular relates to a bracket for measuring the installation angle of a propeller hub support arm. Background technique [0002] After the installation and adjustment of the helicopter flight control system is completed, it is necessary to check the blade installation angle to confirm whether the position of the specific control device (control stick, collective pitch rod, pedal) of the helicopter corresponds to the specific blade installation angle, which is usually passed The fixed blade torsion angle is converted into the installation angle of the hub support arm to facilitate process measurement. Therefore, the accuracy of the installation angle measurement of the hub support arm is directly related to the flight performance and flight quality of the helicopter. [0003] The traditional measurement of the installation angle of the hub support arm 11 is to place the notc...
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IPC IPC(8): B64F5/60
CPCB64F5/60
Inventor 吴杭伟孙冲陈宇金何辰飞
Owner CHINA HELICOPTER RES & DEV INST