Accession Number:

ADB055223

Title:

Assessment of Hollow (Tubular) Projectile Time of Flight on Vulcan Air Defense System (VADS) Accuracy

Descriptive Note:

Final rept. Feb-Aug 1979,

Corporate Author:

AMERICAN ELECTRONIC LABS INC LANSDALE PA EMTECH DIV

Personal Author(s):

• Gol, Bohdan
• Segal, Robert S.
• Eastburn, Christine

Report Date:

1981-02-01

Pagination or Media Count:

71.0

Abstract:

Man in the loop experiments, utilizing the Vulcan Air Defense System Dynamic Field Evaluator VADS-DFE, were conducted to assess VADS accuracy with standard M246 and reduced time of flight hollow tubular ammunition. Simulated targets flying linear flight paths with velocity over crossing range VR ratios of 0.33 rads, 0.66 rads and 0.99 rads were utilized. Time histories of weapon pointing and tracking error were collected, reduced and analyzed. With hollow round ballistics employed in lieu of M246 ballistics, substantial improvements in weapon pointing accuracy were noted. Effects on tracking accuracy, however, were small. In essence, standard Vulcan appears as a 24.0 mil system and Vulcan, with hollow ballistics, an 18.0 mil system for a net improvement of 27 percent. Tracking accuracy is hardly impacted 4 percent. Due to various experimental constraints, the results produced were inconclusive yet promising. It was therefore recommended that further development of hollow tubular ammunition continue for anti-aircraft warfare.

Descriptors:

• *AIR DEFENSE
• *PROJECTILES
• *PROJECTILE TRAJECTORIES
• *EXTERIOR BALLISTICS
• MATHEMATICAL MODELS
• PERFORMANCE(ENGINEERING)
• TRACKING
• ACCURACY
• TIME
• FLIGHT
• WEAPON SYSTEM EFFECTIVENESS
• AIMING
• FLIGHT SIMULATION
• ANTIAIRCRAFT GUNS
• TUBES
• TEST SETS
• ANTIAIRCRAFT AMMUNITION

Subject Categories:

• Guns
• Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE