Investigating of the Leap Required in Effective Technologies for SSTO Design Using MDO

The possibility of injecting a satellite into orbit using a single-stage carrier has been one of the challenges far from human hands since the past. Even in the past, to prove the impossibility of achieving this wish, various mathematical relations and equations have been expressed. But what has filled the hopes in recent years is the improvement of the technology level. The answer to the question of whether it is possible to achieve the circuit using a single-stage carrier with the current level of technology has recently received attention. In this research, an overview of the existing technologies and single-stage launchers is discussed and the path from the existing technology to the required technology is extracted. For this purpose, after modeling different subsystems, the design framework based on multi-subject optimal conceptual design and GA-SQP optimization algorithm has been developed and validated. Then, multi-objective optimal design (MDO) of a single-stage satellite carrier has been carried out and the feasibility of achieving a single-stage satellite carrier has been evaluated. Despite extracting the best structure, the results indicate the impossibility of achieving this product with the current level of technology. In the following, the minimum amount of technology jump required by each technology, including issues such as release, propulsion and structure, to achieve this task was carried out based on multi-objective optimal analysis (MDA) and the results for each technology are presented separately.