Optimal Trajectories by Implicit Simulation (OTIS) Version 5.0: A General Purpose 3-DOF Aerospace Vehicle Trajectory Simulation and Optimization Computer Program(LEW-20403-1)

Optimal Trajectories by Implicit Simulation, Version 5.0 (OTIS5) is a reworking of the OTIS trajectory optimization software development. OTIS5 is a general purpose 3-Degree Of Freedom (DOF) trajectory simulation and optimization software package that is focused on the optimization of aerospace vehicle trajectories and associated vehicle design parameters. OTIS5 retains most of the functionality of the previous version but does not contain computer code subject to International Traffic in Arms Regulations (ITAR) restrictions. The authors still intend the software to be limited to domestic USA-only use. In addition, the new software will be distributed without the need for recompilation making for an easier distribution process while also retaining code integrity through this (form of distribution) software control measure.