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Rigid body rotational inertia determination method based on torsional pendulum method

A technique for determining the method and the moment of inertia, which is applied in static/dynamic balance testing, measuring devices, testing of machine/structural components, etc., and can solve problems such as difficulty in obtaining measurement results and affecting the accuracy of measurement results

Pending Publication Date: 2021-09-10
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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Problems solved by technology

[0004] At present, the above method is used to measure the moment of inertia of the aircraft. Due to errors in installation and positioning, the accuracy of the measurement results is affected, and the influence of aerodynamic damping is ignored. In the case of a large aircraft size, it is even more difficult to obtain accurate measurements. result

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  • Rigid body rotational inertia determination method based on torsional pendulum method
  • Rigid body rotational inertia determination method based on torsional pendulum method
  • Rigid body rotational inertia determination method based on torsional pendulum method

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[0037] In order to make the technical solution of the present application and its advantages clearer, the technical solution of the present application will be further clearly and completely described in detail below in conjunction with the accompanying drawings. It can be understood that the specific embodiments described here are only part of the application Examples are only used to explain the present application, not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, and other relevant parts can refer to the general design. In the case of no conflict, the embodiments in the application and the technologies in the embodiments Features can be combined with each other to obtain new embodiments.

[0038] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of the application shall have the usual meanings und...

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Abstract

The invention belongs to the technical field of rigid body rotational inertia determination, and particularly relates to a rigid body rotational inertia determination method based on a torsional pendulum method, wherein the method comprises the steps: obtaining an inertia measurement action parameter K of a torsional pendulum measurement system; obtaining the mass m of the rigid body; obtaining the distance L between the gravity center of the rigid body and the torsional pendulum axis of the torsional pendulum measurement system; obtaining a torsional pendulum period T of the torsional pendulum measurement system; obtaining a damping coefficient xi of the torsional pendulum measurement system; obtaining an aerodynamic damping coefficient Xi' of the rigid body; and calculating rotational inertia I of the rigid body.

Description

technical field [0001] The application belongs to the technical field of determining the moment of inertia of a rigid body, and in particular relates to a method for determining the moment of inertia of a rigid body based on the torsion pendulum method. Background technique [0002] Aircraft moment of inertia is the measure of the inertia of the aircraft when it rotates. It is an inherent mass characteristic parameter of the aircraft. Its magnitude is related to the mass of the aircraft, its mass distribution, and the position of the rotating shaft during rotation. It is an important original parameter and calculation basis for aircraft design. [0003] At present, the torsional pendulum method is mostly used in the measurement of the rotational inertia of the aircraft. The rotational inertia of the aircraft is measured by the torsion measurement system, and the rotational inertia of the aircraft is measured based on the theory of simple harmonic vibration. [0004] At prese...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/10
CPCG01M1/10
Inventor 闫志彬张研姚艳周健
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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