Preparation method of optimized rapid prototyping light titanium alloy launch vehicle strap-on support

Abstract

The invention belongs to the field of design of aerospace craft structures and provides a preparation method of an optimized rapid prototyping light titanium alloy launch vehicle strap-on support. According to the preparation method, the structure is subjected to static analysis after the material of the launch vehicle strap-on support is replaced by a Ti-TC11 material on the basis of the conventional launch vehicle strap-on support, the material bearing a relatively low stress is removed according to the analysis result on the preconditions that the overall structure form and an assembly interface of the strap-on support in the sample stage are not changed, then a model is modified, the structure stress level and the structure instability load are analyzed again, and the process is cycled for a plurality of times until the stress level of the structure of the strap-on support is relatively even under the designed load and is near to the limiting stress of the Ti-TC11 material and the instability load is slightly more than or equal to the designed load. The preparation method is suitable for the design of the strap-on support on a force transmission point of a large-thrust strap-on launch vehicle, is favorable for shortening the product production cycle, lowering the production cost and reducing the weight of a strap-on structure, and improves the launching efficiency.

Description

technical field [0001] The invention belongs to the field of aerospace vehicle structure design, and relates to a preparation method of an optimized lightweight titanium alloy rapid-forming carrier rocket binding support. Background technique [0002] There is a main force transmission binding support on the core stage of the binding launch vehicle and each booster respectively, and the two are connected by explosive separation bolts, and the main force transmission binding support transmits the thrust of the booster to the core stage as Important load-bearing and force-transmitting components, the structural form of the bundled support has a very significant impact on the local strength of the rocket shell. The main force transmission points of the existing models in our country all adopt box-shaped binding supports, and the thrust is transmitted from the binding supports to the core-level shell through the shear resistance of the connecting bolts. The design load of the b...

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Problems solved by technology

However, because the material is a steel forging, the weight of the bundled support structure is relatively heavy (105kg for a single, 420kg for 4 bundled supports), and the production and processing cycle is long, the processing technology is complex, and the processing volume is large, resulting in high processing costs, which is difficult to meet The CZ-5 structure requires further weight reduction and fast, low-cost production requirements, and a new type of binding support must be developed

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