An approach for space launch vehicle conceptual design and multi-attribute evaluation

This paper presents an approach for space launch vehicle conceptual design and evaluation using multi-attributes decision making analysis. The approach is comprised of morphological matrix method to improve the brain storming process by efficiently identifying potential space launch vehicle design concepts. The potential concepts are screened for compatibility and are then sized for desired mission using Tsiolkovsky ideal velocity rocket equation. The Tsiolkovsky ideal velocity rocket equation supported by mass and propulsion modeling is found to be fast and efficient and is applied for sizing and performance modeling of space launch vehicle at the conceptual design phase. Based on the performance parameters, program related issues and cost attributes, the candidate design concepts are subjected to multi-attribute decision making analysis. This is to rank the alternative design concepts and identify the most promising ones for further considerations. The successful application of the proposed approach in conceptual design and evaluation of space launch vehicle has demonstrated its utility in the early phase of the aerospace system design and decision making.