ETO (Earth-to-Orbit): A Trajectory Program for Aerospace Vehicles

Abstract

This is a formulation report and user guide for a two-degree-of- freedom flight trajectory computer program. The program, called ETO, runs on IBM/compatible XT/AT microcomputers. It is designed for very short run times, i. e., less than 1 to 3 minutes. Horizontal or low angle takeoff single-stage or two-stage vehicles can be studies. Ascent to earth orbit or constant speed cruise can be studied. Any combination of airbreathing or rocket propulsion may be used. Working from tabular data for propulsion performance, aerodynamics, and vehicle weight and fuel, the governing equations of motion are integrated forward in time to track velocity, altitude, range, flight path angle, and weight. Keywords: Trajectory program; Earth-to-orbit; Cruise vehicle performance; Airbreathing propulsion; Rocket propulsion; Horizontal takeoff; Single-stage; Two-stage vehicles. (EG)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1989
Accession Number
ADA218157

Entities

People

  • John L. Leingang
  • Kenneth A. Watson
  • Louis R. Carreiro
  • Wayne A. Donaldson

Organizations

  • Wright Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerospace Craft
  • Centrifugal Force
  • Classification
  • Computer Programming
  • Computer Programs
  • Computers
  • Dynamic Pressure
  • Earth Orbits
  • Equations Of Motion
  • Flight Paths
  • Flow Rate
  • Friction
  • Mach Number
  • Orbits
  • Rocket Propellants
  • Rocket Propulsion
  • Spreadsheet Software

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Computer Science.
  • Space Exploration and Orbital Mechanics.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster
  • Space - Orbital Debris
  • Space - Spacecraft Maneuvers