A triangular surface type dovetail groove composite material rudder substrate and its installation method

Abstract

A triangular surface type dovetail groove type composite material rudder base plate and its installation method, the lower surface of the rudder base plate is in the same shape as the profile of the cabin shell where it is installed; the lower surface is provided with a dovetail groove, and the central surface of the dovetail groove is used as the whole The center plane of the rudder base plate; the center of the upper surface is a triangular plane, and the two end faces of the upper surface are parallel to the central plane; a smooth transition between the triangular plane and the above-mentioned two end faces; the lower surface of the triangular plane relative to the rudder base plate is inclined and The apex of the triangular plane is located on the outer heat-resistant surface of the cabin shell. The invention improves the thermal environment around the rudder base plate by adopting the aerodynamic shape of the smooth triangular surface structure; it is installed on the surface of the aircraft through the trapezoidal dovetail groove of the rudder base plate and the dovetail block of the metal shell, simplifying the traditional heat-proof plug and multi-thread connection interface structure, Reduce the grinding process and improve the operability of production assembly.

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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