A rotating flutter simulation device

A simulation device and flutter technology, applied in the field of rotational flutter simulation device, can solve the problems of lack of rotational flutter test research, propeller disc instability, etc., and achieve the effect of saving model processing and test costs

Active Publication Date: 2017-03-08
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current analysis of the "rotational mode" mainly focuses on the study of the instability of the propeller disc, and there is a lack of experimental research on rotational flutter.

Method used

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  • A rotating flutter simulation device
  • A rotating flutter simulation device
  • A rotating flutter simulation device

Examples

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Embodiment Construction

[0028] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated.

[0029] Such as Figure 1 to Figure 4 As shown, the rotational flutter simulation device provided by the present invention includes a pylon beam 1, a nacelle beam 2, a pitch bearing support 3, a yaw bearing support 5, a blade rotating shaft 7, a pitch rotating shaft 10, and a yaw spring 12. Pitch spring piece 13 , yaw spring support 16 and pitch counterweight 17 .

[0030] The nacelle beam 2 is horizontally fixed by the pylon beam 1 ( figure 1 Viewing direction shown in ) is set at the bottom of the wing spar; specifically, the bottom end of the pylon beam 1 is fixedly connected to the upper surface of the nacelle beam 2 by bolts, and the top end is fixedly connected ...

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Abstract

The invention relates to the technical field of pneumatic elasticity tests, and particularly to a rotation flutter simulation device capable of performing test research on key parameters of rotation flutter. The rotation flutter simulation device comprises a hanging rack beam, a short cabin beam, a pitching bearing support, a yaw bearing support, a pitching bearing cover plate, a yaw bearing cover plate, a paddle rotating shaft, a paddle, a paddle wheel hub, a pitching rotating shaft, a wheel hub hood, a yaw spring piece, a pitching spring piece, a pitching spring clip, a cushion block, a yaw spring support and a pitching balancing weight block, can simulate rotation of a propeller and gyroscopic effect per se, also can research change of yaw and pitching rigidity of an engine system, pivot point change and influence from advance ratio to rotation flutter and can realize research on multiple key variable parameters on one set of model. Therefore, model processing and testing costs are saved.

Description

technical field [0001] The invention relates to the technical field of aeroelasticity test, in particular to a rotational flutter simulation device. Background technique [0002] With the development of engines and the emergence of new engines, the diameter of blades increases, the flexibility of supports increases, and the consideration of damage safety, rotational flutter has become a problem that must be considered in the design of turboprop aircraft. Therefore, CCAR-25 and national military standards stipulate that the problem of rotational flutter must be considered for turboprop aircraft. However, the current analysis of the "rotational mode" mainly focuses on the study of the instability of the propeller disc, and there is a lack of experimental research on rotational flutter. Contents of the invention [0003] The object of the present invention is to provide a rotational flutter simulation device capable of conducting experimental research on key parameters of ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64F5/00B64F5/60
Inventor 陈海黄国宁李俊杰胡志勇孙晓红
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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