The Implementation of Maximum Likelihood Estimation in Space Launch System Vehicle Design

Stein, W B ; Thompson, S B ; Statham, T L ; Craig, A S

关键词: DESIGN ANALYSIS;    EXPERIMENT DESIGN;    MAXIMUM LIKELIHOOD ESTIMATES;    PAYLOADS;    SPACE LAUNCH SYSTEM (SLS);    SYSTEMS ENGINEERING;    TRAJECTORIES;    COEFFICIENTS;    DEGREES OF FREEDOM;    DYNAMIC PRESSURE;    MANUFACTURING;    MONTE CARLO METHOD;    SPACECRAFT LAUNCHING;    THREE DIMENSIONAL MOTION;    THRUST;   

RP-ID  :  AAS 19-249,M18-7145

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

The Space Launch System uses a Maximum Likelihood Estimation process in conjunction with Design of Experiments to develop statistically representative vehicles for the Block 1 configuration. These vehicles are then used to estimate maximum load conditions for simulating stressing cases in other simulations. This paper discusses the modeling process and how SLS captures manufacturing uncertainty in the launch vehicle design. It also provides an overview of the differences between Block 1 statistical representations. This paper also discusses proper grid choice as well as which uncertainties drive the vehicle design.