SPACE SYSTEM SPECIFIC IMPULSE

Abstract

The system specific impulse (Iss) was determined to be the equivalent of specific impulse (Isp) of an idealized system having the same net effectiveness as the actual system but with zero mass of all structural equipment except the payload. THE Iss for chemical and nuclear propelled launch vehicles is compared on the basis of specific impulse, structural factors, equivalent velocities, and number of stages. With Iss, it is possible to separate the system net effectiveness of a multistage vehicle from the downgrading of payload-carrying capabilities introduced by the staging and to recognize that the system effectiveness for each stage is proportionate, or that it is a simple summation if the staging is non-proportionate.

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Document Details

Document Type
Technical Report
Publication Date
Jul 22, 1960
Accession Number
AD0286077

Entities

People

  • F.w. Ross

Organizations

  • General Dynamics

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Artificial Satellites
  • Coordinate Systems
  • Engines
  • Equations
  • Government Procurement
  • Liquid Hydrogen
  • Payload
  • Propellants
  • Rocket Engines
  • Space Sciences
  • Space Systems
  • Spacecraft
  • Specific Impulse
  • Thrust
  • United States
  • Vehicles

Readers

  • Aerospace Propulsion Engineering.
  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Systems Analysis and Design

Technology Areas

  • Space
  • Space - Hall-Effect Thruster