Sensing and driving integrated composite wing cover, and test system and application thereof

Abstract

The invention relates to a sensing and driving integrated composite wing cover, and a test system and application thereof, and belongs to the field of pneumatic design and structure design of airplanes. The cover is formed by splicing N-layer semi-honeycomb structure composite material sensing layers in sequence from the top down, and the longitudinal cross section of the cover is of a honeycomb structure after the sensing layers are spliced; a shape memory alloy drive sandwich layer (3) is arranged between the adjacent semi-honeycomb composite sensing layers; each semi-honeycomb composite sensing layer comprises upper and lower fiber-enhanced composite material layers (1) and an optical fiber sensing sandwich layer (2) arranged between the upper and the lower fiber-enhanced composite layers; the hollow part of the honeycomb structure is filled with silicon rubber (4); an optical fiber grating sensor (8) is arranged in each optical fiber sensing sandwich layer (2); each shape memory alloy drive sandwich layer (3) is provided with a shape memory alloy wire (10). According to the wing cover, the self-sensing and efficient active control requirements of a deformation state of a morphing wing can be met.

Description

technical field [0001] The invention relates to a sensor-drive integrated composite wing skin, a test system and its application, and belongs to the field of aircraft aerodynamic design and structural design. Background technique [0002] The wing has a very important influence on the lift-to-drag ratio, limit speed, maneuverability, control and stability, economy and safety of the aircraft. In order to pursue more efficient wings for traditional wings, Morphing Wing (Morphing Wing) technology has become the forefront of scientific and technological development at home and abroad. Different from the passive flow field control method of traditional fixed-wing aircraft, the morphed wing has the ability to adapt to the airfoil shape. According to the requirements of flight missions and flow field conditions, the wing can be actively deformed to improve the flow field of the wing surface and delay the airflow separation. , always maintain the best shape to meet the flight requi...

AI Technical Summary

Problems solved by technology

The traditional skin mainly maintains the aerodynamic shape of the wing, bears and transmits the flight aerodynamic load, and cannot improve the aerodynamic performance of the aircraft

[0003] The variable body wing mainly adopts three types of skins: one is the piece-type movable hard skin, which has better load-carrying capacity, stronger high-temperature resistance, and more convenient welding, but the driving mechanism is complicated and the required driving force is relatively large. Large, unable to meet the requirements of smooth, continuous and overall airtightness of the wing surface

The second is the rubber skin, which has good deformation ability and air tightness, but the bearing capacity is not high, and the damage resistance is poor

However, the above invention patent does not involve skin bending deformation and skin deformation measurement method

Images