Accession Number:

AD0766766

Title:

An Investigation of Laser-Supported Detonation Waves

Descriptive Note:

Technical rept. 24 Feb 1972-23 Mar 1973

Corporate Author:

BOEING AEROSPACE CO SEATTLE WA

Personal Author(s):

Report Date:

1973-06-01

Pagination or Media Count:

274.0

Abstract:

ED SURFACES TO 4.5 X 10 TO THE 7TH POWER WATTSSQ CM FOR SILICA AT STANDARD ATMOSPHERIC PRESSURE. Such a detonation wave is found to change features late in the laser pulse becoming a subsonic absorption wave with a long luminous column of plasma filling the laser beam. Time-resolved interferometry with an argon laser and interferograms with a pulsed ruby laser show the ignition, growth, and decay of both the detonation wave itself and of the radial shock waves which are produced. Spectroscopic studies have been made showing both time-integrated and time-resolved temperatures. These measurements indicate the radial and time-dependence of the shock waves on the target surface. Theoretical calculations of the propagation of subsonic laser- supported combustion waves have been performed using analytical techniques and approximations to thermodynamic and transport properties of air.

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE