Wind tunnel model folding deformable wing

Abstract

The invention relates to a wind tunnel model folding deformation wing which is mainly used for measuring the pneumatic force of deformable aircraft in the wind tunnel dynamic test; traditional whole wing is divided into parts: a wing body, an internal wing, an external wing and the like; the wing body, the internal wing, the external wing, a connecting rod and a hinge shaft are coupled together with a driving mechanism and a driven mechanism controlled by a precise mechanical device; two mutually parallel longitudinal hinge shafts are arranged at the joint between the internal wing and the wing body and between the internal wing and the external wing; the hinge shaft of the internal wing and the wing body is a fixed shaft; the hinge shaft of the internal wing and the external wing is a driven shaft; the driving mechanism drives the internal wing to rotate correspondingly to the fixed shaft and drives the driven mechanism at the same time, thus leading the driven shaft to rotate correspondingly to the fixed shaft; the external wing arc plane always keeps a state parallel to the horizontal plane during the deformation running process of the wing. The wing folding deformation mechanism runs smartly and stably without noise, excellently bears the pneumatic force and pneumatic moment of the model, and realizes the digital control during the folding process, with precise positioning of the folding angle.

Description

(1) Technical field [0001] The invention relates to a wind tunnel model folded and deformed wing, which is mainly used for the wind tunnel model folded and deformed wing for measuring the aerodynamic force of a deformed aircraft in a wind tunnel dynamic test. (2) Background technology [0002] It is the pursuit of aviation science and technology personnel to fly aircraft faster, higher and farther, but none of the aircraft currently in service in the world can achieve all of the above goals at the same time. Due to technical limitations, the design of traditional fixed-wing aircraft can only be compromised for different flight tasks and states. Therefore, the aircraft can only have good aerodynamic performance in a certain airspace range and a certain speed range, and the aerodynamic performance drops very sharply when flying away from the design point, which causes the aircraft model to have a single function, maneuverability and flexibility. are subject to restrictions. ...

AI Technical Summary

Problems solved by technology

[0004] At present, in Western countries such as Europe and the United States, it has been envisioned to use piezoelectric technology and local deformation of smart materials to realize the folding deformation of the wings, but these two technologies are still immature and are only in the experimental stage, and there are many key technologies among them. There is no breakthrough, and there is still a long way to go from practical application

[0005] my country has carried out certain research work on deformable aircraft technology, and there have been some experiments and researches on the folded deformable wing of the wind tunnel test model, but there have been no reports of related research and development and application in China so far.

There are still many problems and deficiencies in the research on the folding deformation of the wing

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