Accession Number : AD0868274

Title :   Optimal Interstellar Trajectories with Drag for Thrust-Limited Rockets.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Dunn, Francis J.

Report Date : MAR 1970

Pagination or Media Count : 76

Abstract : Investigates interstellar drag effects on minimum time and minimum fuel trajectories of relativistic ideal photon rocket. Assumes negligible gravitational effects, upper flight time limit of 40 years, and initial to final mass ratio limit of 10,000. Two-point boundary value problem obtained form optimal control theory is formulated in physical variables, normalized, and solved with computer program. Singular arcs are possible on each type trajectory but do not occur within flight time limit on minimum time trajectories. Drag effects are negligible on most trajectories and no-drag equations may be used. Trajectories are limited by flight time assumption, not mass ratio. (Author)

Descriptors :   (*ROCKET TRAJECTORIES, DRAG), OPTIMIZATION, ROCKET PROPULSION, INTERSTELLAR MATTER, BOUNDARY VALUE PROBLEMS, RELATIVITY THEORY, THRUST, THESES.

Subject Categories : Spacecraft Trajectories and Reentry

Distribution Statement : APPROVED FOR PUBLIC RELEASE