THE VANGUARD SEQUENCE DIAGRAM, A GRAPHICAL METHOD PRESENTING COMPLEX SYSTEM OPERATION

Abstract

The Vanguard sequence diagram is introduced as a means of graphically presenting the operation Of complex systems. This diagram represents system components and their changing states as they interact sequentially. Thus it shows at a glance the state of every component at any instant in a nominal Operation of the system, as well as all the events occurring at any instant and the components involved in each event. The utility of the sequence diagram is discussed and various applications are suggested. The method of interpreting the diagram is explained and illustrated in a simple example. To demonstrate a complete application, the complete nominal flight operation of the first Project Vanguard rocket test vehicle is presented as an appendix, in both sequence diagram and conventional narrative forms.

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Document Details

Document Type
Technical Report
Publication Date
Aug 15, 1958
Accession Number
AD0203077

Entities

People

  • R. W. Foster
  • W. J. Escher

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Attitude Control Systems
  • Combustion
  • Complex Systems
  • Control Systems
  • Launching
  • Military Research
  • Nose Cones
  • Pressure Switches
  • Propellants
  • Propulsion Systems
  • Rocket Engines
  • Rockets
  • Solenoid Valves
  • Tank Vents
  • Test Vehicles
  • Thrust Chambers
  • Vehicles

Readers

  • Computer Science.
  • Educational Psychology
  • Space Exploration and Orbital Mechanics.