Accession Number:

ADA285870

Title:

Reduction of 40-mm Muzzle Blast and Flash for AC-130 Gunship

Descriptive Note:

Final rept. Jan 1992-Dec 1993

Corporate Author:

ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Report Date:

1994-10-01

Pagination or Media Count:

30.0

Abstract:

Muzzle devices for reducing the blast and flash levels received by the AC-130 gunship were investigated. A noise suppressor design decreased the blast levels only minimally while the flash level increased compared to the standard flash hider. Extension tubes with 6-inch and 8-inch exit diameters were also tried with no better results. A flash hider with an 8-inch exit diameter brought the flash levels down to new lows but the peak overpressure levels on the airplane were not improved. Finally, a 22-inch barrel extension was tried. The use of a barrel extension resulted in decreased levels of flash and reduced peak overpressure at all microphones except one positioned in the most forward position. Muzzle blasts, Muzzle flash, Interior ballistics, Muzzle devices, Shock waves.

Subject Categories:

  • Aircraft
  • Ammunition and Explosives
  • Guns
  • Ballistics
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE