The Theory Behind the SOCRATES Code

Abstract

The SOCRATES contamination model is described at length. The model allows for unsteady or steady simulation of contamination aboard a spacecraft via the direct simulation Monte Carlo method. The basis for the model is discussed, and sample calculations are given for an RCS engine firing at 320 kilometer altitude for three different orientations. These calculations are compared to visible data in the 6300 A region which is attributed to the forbidden transition between the O(1D) and O(3P) electronic states of atmospheric atomic oxygen.

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Document Details

Document Type
Technical Report
Publication Date
Aug 06, 1992
Accession Number
ADA259987

Entities

People

  • J. B. Elgin
  • L. S. Bernstein

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Cartesian Coordinates
  • Cell Structure
  • Chemical Reactions
  • Computational Science
  • Coordinate Systems
  • Data Science
  • Distribution Functions
  • Equations
  • Grids
  • Information Science
  • Mechanics
  • Monte Carlo Method
  • Probability
  • Relative Motion
  • Simulations
  • Statistical Sampling
  • Statistics

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Molecular Photonics/Laser Physics
  • Space Exploration and Orbital Mechanics.

Technology Areas

  • Microelectronics
  • Space
  • Space - Hall-Effect Thruster