ENGINEERING RESEARCH

Abstract

The measurement of the specific impulse delivered by small quantities of propellant in rocket motors of conventional but miniature design by means of a pendulum system was examined. The rocket motors were assumed to contain on the order of 10 g of propellant. Emphasis was placed on short pendulums for which the propellant burning time could not be neglected with respect to the pendulum period. A mathematical model of the pendulum was used for a design study. An error analysis was made which indicated that the total impulse delivered to the pendulum could be measured to within at least 1% s.d. Analysis of a prototype pendulum design indicated that performance should be satisfactory. A cost estimate of the system was made. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 14, 1961
Accession Number
AD0266629

Entities

People

  • C.h. Parr
  • R.m. Sanders
  • W.h. Iii Groetzinger

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Cost Estimates
  • Engineering
  • Error Analysis
  • Mathematical Models
  • Models
  • Pendulums
  • Propellants
  • Rocket Engines
  • Rockets
  • Specific Impulse

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Regression Analysis.
  • ballistics.