1992. Launch Vehicle Synthesis and Methodology

Paper

Abstract

Traditional approximate methods for sizing have been replaced at General Dynamics Space Systems (GDSS) with more exact weight and geometry modeling of vehicles. Vehicle models consisting of series of algebraic equations describing the vehicle geometry and weight have been utilized in two ways. – A program called SIZIT utilizes the weight models and the rocket equation method to size expendable launch vehicles with a high degree of versatility and accuracy. – A program called FASTPASS uses the weight models to optimally size a vehicle while running a trajectory simulation. This eliminates several steps in the vehicle synthesis process and results in a vehicle that meets performance requirements at minimum vehicle cost.