Long Range Study Program Lightweight Artillery Weapon

Abstract

This study concerned the development of a lightweight artillery weapon launcher which can be transported by helicopter. The prototype no. 3 Launcher, XM70E1, 115mm was instrumented with strain, pressure and displacement gages; these furnished the actual loading and motion of the launcher structure. In addition to certain simple dynamic analyses, a 3-degree-of-freedom, nonlinear mathematical model of the launcher dynamics was derived and programmed for solution on Armour Research Foundation's Univac 1105. The output of the computer program was correlated with experiment and used to study the effect of physical parameter variations. Regions of instability of the launcher motions were shown to exist for burst firings; relationships between component stiffness and damping were found which optimized the launcher response to firing loads, based upon a simple accuracy criterion. Certain design suggestions were evaluated and shown to benefit the accuracy of the launcher. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1961
Accession Number
AD0265514

Entities

People

  • R. M. Brach

Organizations

  • IIT Research Institute

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Angular Motion
  • Artillery
  • Computer Programs
  • Computers
  • Differential Equations
  • Dynamic Response
  • Dynamics
  • Equations Of Motion
  • Launchers
  • Mathematical Models
  • Measurement
  • Moment Of Inertia
  • Plastic Explosives
  • Resonant Frequency
  • Three Dimensional
  • Transient Response Analysis

Readers

  • Control Systems Engineering.
  • Structural Dynamics.
  • ballistics.