Accession Number : ADA088729


Title :   Laser-Raman Measurements in the Muzzle Blast Region of a 20-mm Cannon


Descriptive Note : Final rept. Oct 1978-Sep 1979


Corporate Author : ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN


Personal Author(s) : Williams, W D ; Powell, H M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a088729.pdf


Report Date : Aug 1980


Pagination or Media Count : 45


Abstract : Laser-Raman diagnostics have been used to determine the temporal variation of N2 and CO number densities in the muzzle blast region of a 20-mm Vulcan cannon. The measurements were made within 3.18 to 13.0 mm of the muzzle exit plane on the cannon axial centerline. Propellant WC-870 was used, and the rounds were downloaded to give a muzzle exit velocity of approximately 470 m/ sec. A standard 98-gram projectile was launched.


Descriptors :   *ANTIAIRCRAFT GUNS , *BLAST WAVES , *GAS DYNAMICS , *GUN MUZZLES , *RAMAN SPECTROSCOPY , CARBON MONOXIDE , CIRCUIT ANALYSIS , EMISSION SPECTRA , GUN BARRELS , LASER BEAMS , LIGHT SCATTERING , NITROGEN , OPTICAL DETECTORS , PROPELLANT FLASH


Subject Categories : Guns
      Atomic and Molecular Physics and Spectroscopy
      Combustion and Ignition


Distribution Statement : APPROVED FOR PUBLIC RELEASE