公开(公告)号：US20240159204A1

公开(公告)日：2024-05-16

申请号：US18314270

申请日：2023-05-09

Applicant: Light-year Explorer (Jiangsu) Space Technology Co., Ltd

Inventor： Lipeng Wang ,  Peiying Zhu ,  Chenlong Liu ,  Zhongyi Liu

IPC: F02K9/60

CPC classification number: F02K9/605 ,  B60K2015/03032

Abstract: The present invention relates to a reinforced bulging tank of a launch vehicle and a manufacturing method therefor. The tank is made of metal material with good plasticity. Firstly, the tank is manufactured by welding annealed plastic metal materials, wherein internal longitudinal reinforcing ribs and internal annular frames/annular plates of barrel sections are welded with a barrel section shell by a low energy laser welding method, and tank bottoms are progressively welded by a plurality of conical sections. Weldments are strengthened and formed through internal pressure bulging under the constraint of external tooling. The outer walls of the barrel sections are not radially deformed under the constraint of a plurality of small width metal rings, and the metal rings are not connected to each other axially. The strength of the materials can be greatly improved by a deep cooling bulging technology.