Lower end frame structure suitable for satellite bearing cylinder

Abstract

The invention provides a lower end frame structure suitable for a satellite bearing cylinder, and relates to the technical field of spacecraft structures. The lower end frame structure comprises a lower end frame and bearing cylinder body connecting section, a lower end frame and carrier connecting section and a connecting piece, wherein the carrier connecting section of the lower end frame is connected with the bearing cylinder body connecting section of the lower end frame through the connecting piece; the lower end frame and carrier connecting section is made of an aluminum alloy material;and the lower end frame and the bearing cylinder body connecting section is made of a carbon fiber material. According to the invention, a split type structure of the lower end frame of the satellitebearing cylinder is designed in allusion to a force bearing cylinder lower end frame with a satellite-rocket interface, the problem that an original lower end frame structure of the satellite bearingcylinder is large in weight is solved, the structural weight is reduced to the maximum extent under the premise of guaranteeing that the lower end frame can bear large concentrated loads, the requirement for light weight of a satellite structure is met, the machining and forming process is mature, the installation is convenient, and the structure is simple.

Description

technical field [0001] The invention relates to the technical field of spacecraft structures, in particular to a lower end frame structure suitable for a satellite bearing cylinder. Background technique [0002] The lower end frame of the satellite load-bearing tube body is a necessary structural part for the load-bearing tube to have a stable shape and a complete and independent shell structure, and is the structural part that bears the largest load in the entire load-bearing tube. [0003] At present, there are two basic structural forms of the lower end frame of the bearing tube: the lower end frame does not include the star-arrow interface type, and the lower end frame includes the arrow interface type. Patent document CN103448919A discloses a carbon fiber-skinned stringer-reinforced load-bearing cylinder for satellite structures, including a connected cone section and a column section, the cone section and the column section are integrally formed, and both the cone sect...

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Problems solved by technology

[0004] The research on the integrated and lightweight satellite load-bearing tube in the literature "Space Return and Remote Sensing" (Space Return and Remote Sensing, 2010, 311: 55-63) is a typical load-bearing tube with satellite-arrow interface, and its lower frame structure is One-piece design, the entire lower end frame is made of aluminum alloy metal material, but this design structure leads to heavy weight of the lower end frame

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