Accession Number:

ADA162542

Title:

Control of Missile Dispersion via Roll Rate Modulation.

Descriptive Note:

Technical rept.,

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA AEROPHYSICS LAB

Personal Author(s):

Report Date:

1985-11-15

Pagination or Media Count:

53.0

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

Subject Categories:

  • Guided Missile Warheads and Fuzes
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE