Air steering for a composite structure-

Abstract

The invention provides an air rudder with a composite structure, which comprises a rudder surface (1) and a rudder shaft (2), wherein the rudder surface (1) and the rudder shaft (2) are connected witheach other through a fastener (3); Wherein the rudder surface (1) comprises a leading edge (4), a rudder core and a heat shield sleeve (8), the rudder core comprises a transition structure, a main structure (7), the transition structure comprises a transition strip (5) and an intermediate (6); The leading edge (4), the transition strip (5), the intermediate body (6) and the main body structure (7) are connected in turn, and the rudder surface (1) is connected with the rudder shaft (2) through the main body structure (7), wherein the intermediate body (6), the main body structure (7) are coated with a heat shield (8), the leading edge (4), the transition strip (5) and the heat shield (8) together constitute the aerodynamic shape of the air rudder. The invention has reasonable structure, adopts a plurality of low-density composite materials, and ensures the structural integrity and reliability of the air rudder under the condition of high-speed and large heat flux flight.

Description

technical field [0001] The invention relates to the field of aerospace, in particular to an air rudder with a composite material structure, especially the air rudder technology for aircraft such as hypersonic missiles and rockets. Background technique [0002] The air rudder is an important part of aircraft such as missiles and rockets. The air rudder is located outside the aircraft. It generates lateral control force by changing the air flow, thereby changing the flight attitude of the aircraft. The controllable flight control of missiles and rockets and its stability and accuracy Greater impact. With the rapid increase of the flight speed of the aircraft, facing more and more serious aerodynamic heating, the rapid rise of the temperature of the air rudder structure will bring about a decrease in the structural strength and stiffness, and may cause the thermal flutter of the aircraft; for this reason, the air rudder is required to have sufficient It has excellent high temp...

AI Technical Summary

Problems solved by technology

At present, the air rudders of high-speed missiles and rockets mainly use titanium alloy as the rudder core, which is coated with ablation-resistant composite material heat-proof sleeves, and the high-temperature areas such as the leading edge are made of high-temperature alloys; It is difficult to control the center of mass, prone to thermal flutter, and the separation of different material interfaces at high temperatures, etc., which will limit the use in harsher flight environments

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