Design method of cylindrical object flutter model free of independent counter weight space

Abstract

The invention belongs to the field of airplane design and relates to a design method of a cylindrical object flutter model free of an independent counter weight space. The design method is characterized in that a profile-followed counter weight is adopted to conduct cylindrical object flutter model design; the method comprises the steps as follows: firstly, stiffness design: the similarity of the flutter model and a target real object in frequency and mode is more than 95%; secondly, shape design: aerodynamic shapes of the flutter model and the target real object are consistent; thirdly, mass design: the similarity of the flutter model and the target real object in mass, center of mass and rotational inertia is more than 95%, and the profile-followed counter weight replaces the partial design shape. The design method has the benefits as follows: the counter weight space is expanded and the counter weight mass is increased while the original design thought is considered, so that the cylindrical object flutter model free of the independent counter weight space has design feasibility.

Description

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AI Technical Summary

Benefits of technology

This patented technology improves the accuracy and consistency of replacing worn or damaged components on an aircraft by providing a new structure called a cushioning system (CBS). By fitting the CB into existing structures instead of adding extra weight, this method allows for more flexibility when changing component designs without increasing their overall size.

Problems solved by technology

This patented describes improving the way in which an airplaner's main rotor blade pitches during flight by adding extra weights at specific locations along its length or near it (the position where the blades hit each other). These modifications help reduce vibrations caused by these interactions between them while still maintaining good aerodynamic performance over time.

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