Reusable Performance Evaluation and Key Technologies of Fuel Tanks Weldment
The core feature of using reusable launch vehicles as the core of their replacement in the development of launch vehicles has undoubtedly highlighted the high level of integration of national industrial standards,and has also become one of the key indicators for achieving space power status.In view of the demand for bench-marking international advanced levels,especially successful cases such as the US Falcon 9 rocket and vertical takeoff and landing of Starship,it is urgent for China to accelerate the development of reusable launch vehicles.This study delves deeply into the key technologies of reusable rocket fuel tank,which are crucial for the control of manufacturing processes for multiple service welded structures,research and development of in-situ characterization techniques,and establishment of real-time evaluation methods and systems.Based on fracture mechanics,by using simulating typical loads and conducting full-scale fatigue tests,the fatigue damage process and mechanism of welded seams at key bearing locations in the fuel tank have been deeply explored.A performance evaluation process for reusable welded structures has been developed,and a service life prediction model for aluminum alloy fuel tank welded structures has been established.This not only helps to quantitatively support the analysis and evaluation of the durability of reusable welded structures,but also provides a powerful technical support for the development of a new generation of reusable near-earth human-carrying rockets.
reusable launch vehicle(RLV)fuel tankwelded structuresfatigue life
万方数据
维普
