Long straight wing dynamic coupling wind tunnel test model with resistance rudder

Abstract

The invention discloses a long straight wing dynamics coupling wind tunnel test model with a resistance rudder, belongs to the technical field of tailless aircraft aeroelasticity wind tunnel models, and relates to a high aspect ratio wing dynamics coupling characteristic wind tunnel test model with a cracking type resistance rudder. The model comprises a basic model, a wing rigidity adjusting device, a control surface control rigidity adjusting device and a control surface deflection angle control device. Because the change of the rigidity distribution of the tailless aircraft wing can cause the change of the inherent frequency, the vibration characteristic of the tailless aircraft wing is influenced; change of control stiffness of the resistance rudder can be used for changing vibration characteristics of the control surface, and change of deflection angle of the control surface can be used for changing strength of attached vortexes. Therefore, the device provided by the invention canbe used for researching the dynamic coupling characteristic of the high aspect ratio wing with the cracking type resistance rudder.

Description

technical field [0001] The invention relates to the technical field of aeroelastic wind tunnel models of tailless aircraft, and relates to a long straight wing dynamic coupling wind tunnel test model with drag rudders, in particular to a large aspect ratio wing with split drag rudders Dynamically coupled characteristics of a wind tunnel test model. Background technique [0002] In order to obtain better stealth performance, the tailless aircraft adopts wing-body fusion technology, and abandons the vertical and horizontal tails. At the same time, the disadvantage is that its directional control characteristics are insufficient. At present, drag rudder is one of the most effective directional control methods for tailless aircraft, which generally refers to the trailing edge cracked drag rudder installed on the wingtip. For a tailless aircraft with a flying wing layout with a large aspect ratio, the small resistance on the drag rudder can generate sufficient yaw moment; in add...

AI Technical Summary

Problems solved by technology

Generally speaking, in the method of obtaining the vibration characteristics of tailless aircraft wings with drag rudders, theoretical calculations are too complicated, and wind tunnel tests are indispensable. Most of the existing wing aeroelastic models use a main beam Simulate the stiffness of the wing, use the frame section to simulate the shape, and use the counterweight to simulate the mass distribution. The influence of the deflection angle of the rudder surface on the vibration characteristics of the wing is seldom considered or even not considered. It is difficult to study the Detailed dynamics of the wing

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