Constrained Trajectory Optimization Using Pseudospectral Methods (Preprint)
Abstract
A constrained optimized trajectory is required to satisfy a hypersonic reentry vehicle's mission requirements and operating limitations. Specified initial and final conditions commonly define a two-point boundary value problem. Such problems have established solution techniques implemented in software packages developed by the National Aeronautics and Space Administration. Current research has demonstrated the use of pseudospectral methods to converge to constrained optimal reentry trajectories. Gauss Pseudospectral Optimal Control Software (GPOCS) is used for this research, however, DIDO is another valid software package implementing pseudospectral methods. The research herein documents the implementation of GPOCS and compares the results, and solution convergence, with those from the Program to Optimize Simulated Trajectories (POST II). This paper also addresses the robust ability of GPOCS to incorporate multiple phases as well as phase-dependent constraints.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 05, 2008
- Accession Number
- ADA485202
Entities
People
- Anil V. Rao
- Christopher S. Schulz
- Franklin R. Friedl
- Timothy R. Jorris