A GRADIENT TECHNIQUE FOR DETERMINATION OF OPTIMUM STEERING PROGRAMS,
Abstract
A gradient technique for optimizing steering functions was developed based on a point mass three-degree-of-freedom trajectory simulation. The optimization technique is applicable to multistage vehicles with a total of up to five powered and coasting trajectory arcs if the endpoints of the arcs, excluding the final point, are fixed. The vehicle parameters and the initial conditions must be completely defined, and they are held constant in the optimization process. The optimization procedure modifies the steering functions on successive trajectories towards satisfaction of all constraints and an extremum in the payoff function. The payoff function and constraints can be selected from a group of fifteen functions evaluated at the end of the trajectory. By use of special penalty functions, certain inequality constraints can be imposed for the entire trajectory. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 06, 1963
- Accession Number
- AD0426105
Entities
People
- U. E. Lapins
Organizations
- The Aerospace Corporation