Triangular curved dovetail groove composite rudder substrate and installation method thereof

Abstract

Provided is a triangular curved dovetail groove composite rudder substrate and an installation method thereof. The lower surface of the rudder substrate is conformed to the shape of a profile of an installation cabin shell; a dovetail groove is formed in the lower surface, and the center surface of the dovetail groove is used as a whole center surface of the rudder substrate; the center of the upper surface is a triangular plane, and both end surfaces of the upper surface are parallel to the center surface; smooth transition between the triangular plane and the both end surfaces is achieved; the triangular plane is inclined with respect to the lower surface of the rudder substrate, and the apex of the triangular plane is located on the outer heat prevention surface of the cabin shell. Thesubstrate improves the thermal environment around the rudder substrate by adopting the aerodynamic shape of a smooth triangular curved surface structure, and is mounted on the surface of an aircraft through the rudder substrate trapezoidal dovetail groove and a metal shell dovetail block inserting mode to simplify a traditional heat-proof plug and a multi-thread connection interface structure, thegrinding process is reduced and the production overall assembly operation is improved.

Description

technical field [0001] The invention belongs to the field of heat-proof structure design. Background technique [0002] The thermal environment at the actuator of the hypersonic vehicle rudder system is very harsh. In order to optimize the aerodynamic thermal conditions and strengthen the thermal protection of the air rudder and rudder shaft structure, the rectification and heat protection design is generally carried out by installing the rudder substrate structure on the outer surface of the projectile. At present, the structure of the rudder base plate of most large-scale tactical aircraft is matched with the installation boss outside the metal shell of the projectile by drilling a through hole in the rudder base plate, and fastening and installing by connecting screws. Since there are mounting holes on the outer surface of the rudder base plate, A heat-resistant plug needs to be designed separately for hole sealing protection. In order to ensure a smooth outer surface, th...

AI Technical Summary

Problems solved by technology

At present, the structure of the rudder base plate of most large-scale tactical aircraft is matched with the installation boss outside the metal shell of the projectile by drilling a through hole in the rudder base plate, and fastening and installing by connecting screws. Since there are mounting holes on the outer surface of the rudder base plate, The heat-resistant plug needs to be designed separately for sealing protection. In order to ensure the smooth outer surface, the heat-resistant plug needs to be polished. This structure has many threaded connections and increases the complexity of the assembly process.

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