Accession Number:

ADA218799

Title:

Orbital Mechanics: A Learning Tool on the Main Frame

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1989-09-01

Pagination or Media Count:

98.0

Abstract:

This thesis consists of an interactive program that enables the student to study the orbital motion of satellites around the earth. The student can investigate the shape of a variety of orbits by varying the initial position and velocity of the satellite, or by supplying select orbital parameters i.e. initial orbital radius, eccentricity, and inclination. Satellite maneuvers can also be studied, like transfer orbits and inclination changes, by command velocity changes at any location in the orbit. Also the effects of the perturbing forces due to the oblateness of the earth, drag for low earth orbits, and gravitational attraction from the sun and moon can be investigated. The orbits are displayed in either the perifocal coordinate system around a model of the earth, or the ground track can be displayed on a map of the world. Orbital data is displayed below the orbital plot. The display is enabled by the use of display integrated software system and plotting language DISSPLA subroutines. Orbital mechanics, Unperturbed and perturbed orbit, FORTRAN program, DISSPLA graphics.

Subject Categories:

  • Space Navigation and Guidance
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE