Distributed Apertures in Laminar Flow Laser Turrets.

Abstract

Assume a technology that permits undistorted laser beam propagation from the aft section of a streamlined turret. A comparison of power on a distant airborne target is made between a single aperture in a large scale streamlined turret with a turbulent boundary layer and various arrays of apertures in small scale streamlined turrets with laminar flow. The array performance is mainly limited by the size of each aperture. From an array one might expect, at best, about 40 percent as much power on the target as from a single aperture with equal area. Since the turbulent boundary layer on the large single-turret has negligible effect on beam quality, the array would be preferred (if all development efforts were essentially equal) only if a laminar wake is an operational requirement. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1981
Accession Number
ADA110818

Entities

People

  • Brian Brooks Tousley

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Airborne
  • Aircrafts
  • Boundary Layer
  • Coast Guard
  • Diffraction
  • Electromagnetic Wave Propagation
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Laminar Flow
  • Laser Beams
  • Lasers
  • Physics
  • Radiation
  • Reynolds Number
  • Turbulence
  • Turbulent Boundary Layer

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Phased Array Antenna Design.
  • ballistics.

Technology Areas

  • Directed Energy