Accession Number : ADA141849

Title :   Orbital Radiation Study for Inclined Circular Trajectories,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION GREENBELT MD GODDARD SPACE FLIGHT CENTER

Personal Author(s) : Stassinopoulos,E G

PDF Url : ADA141849

Report Date : Nov 1981

Pagination or Media Count : 427

Abstract : A comprehensive study was conducted to determine the space radiation environment of a series of high inclination geocentric orbits for a mission duration of five years. Following the precedent established, the external (surface incident) charged particle radiation, predicted for the satellite was determined by orbital flux integration for six independent trajectories. The latest standard models of the environment were used in the calculations. Magnetic field definitions for the six nominal circular trajectories were obtained from a current field model. Spatial and temporal variations or conditions affecting the static environment models were considered and accounted for, wherever possible. Finally, limited shielding and dose evaluations were performed for simple infinite slab and spherical geometries. Results, given in graphical and tabular form, are analyzed.

Descriptors :   *Inclined orbit trajectories, *Circular orbits, *Space charge, Space environments, Charged particles, Particle flux, Flux(Rate), Radiation, Ephemerides, Spacecraft components, Artificial satellites

Subject Categories : Nuclear Physics & Elementary Particle Physics
      Unmanned Spacecraft
      Spacecraft Trajectories and Reentry

Distribution Statement : APPROVED FOR PUBLIC RELEASE