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Phalanx CIWS

NAVAL PLATFORM SYSTEMS

Phalanx CIWS

Phalanx CIWS

Close-In Weapon System (CIWS)

The Phalanx CIWS defends navy ships against a variety of anti-ship threats, such as anti-ship missiles and aircraft, small high-speed surface craft, helicopters and surface mines. Phalanx is the only deployed CIWS capable of autonomous search, detection, evaluation, tracking, engagement and kill-assessment functions.

The Block 1B Surface Mode configuration builds on earlier capabilities with the addition of an Optimized Gun Barrel (OGB) for an improved dispersion pattern and an integrated Forward-Looking Infrared System. The new OGBs are 18 inches longer than the original M61A1 gun barrels, are substantially thicker, and include both a barrel brace and muzzle restraint to improve longevity and projectile dispersion patterns. The Enhanced Lethality Cartridge provides a 50 percent increase in penetration mass. The Phalanx FLIR provides a unique capability to search, track and engage littoral warfare threats while simultaneously providing a significant improvement in ASM engagement ranges.

Phalanx Technical Specifications
Gun Type M61A1 20mm cannon
Weight 13,600 pounds (6,169 kg)
Rate of fire Dual fire rate, 3,000 or 4,500 shots per minute
Electric power Three-phase, 440V, 60 Hz, 18kw in search, 70kw in track
Gun drive Pneumatic
Magazine 1550-round enhanced lethality cartridge
Mount drive Electric
Search radar Ku-band, digital MTI
Track radar Ku-band, pulse doppler

monopulse

EO sensor FLIR imaging system with automatic ACQ tracker
Seawater cooling 20gpm, 30psig
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