Control of Missile Dispersion via Roll Rate Modulation.

Abstract

Feedback control via roll rate modulation to limit cross-range dispersion of spinning missiles is investigated. The dispersion to be controlled is assumed to result from lift variations that do not average out over a roll cycle when the missile roll rate remains constant. By modulating the roll rate in a prescribed manner through feedback control, lift nonaveraging and the resulting cross-range dispersion are minimized. Two different approaches to the feedback control are investigated. In one approach, the roll rate is modulated by feedback of the state variables to prevent the occurrence of lateral velocity increments that produce dispersion. In the other approach, the roll rate is modulated harmonically about a steady roll rate, and the amplitude of the harmonic variation is controlled to limit dispersion. Keywords: Angle of attack; Equations of motion; Linear and nonlinear differential equations; Time dependence; Missile aerodynamics; Charts. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1985
Accession Number
ADA162542

Entities

People

  • Daniel H. Platus
  • Jennifer Shandling

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Artificial Intelligence
  • Ballistic Missiles
  • Chemical Reactions
  • Computational Science
  • Control Systems
  • Coordinate Systems
  • Differential Equations
  • Dispersions
  • Equations
  • Equations Of Motion
  • Feedback
  • Fluid Mechanics
  • Materials
  • Materials Science
  • Physics Laboratories
  • Space Systems

Readers

  • Marine Hydrodynamics
  • Marksmanship and Weaponry.
  • Radio communications and signal processing.