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The Tizard Mission to the United States provided the USN with crucial data on UK and Royal Navy radar technology and fire-control radar systems. In September 1941, the first rectangular Mark 4 Fire-control radar antenna was mounted on a Mark 37 Director, [39] and became a common feature on USN Directors by mid 1942. Soon aircraft flew faster ...
World War II–era Mark 37 Director for 5 in/38 caliber dual purpose guns above bridge of destroyer USS Cassin Young, backfitted with postwar AN/SPG-25 radar antenna. For warships of the 20th century, the director is part of the fire control system; it passes information to the computer that calculates range and elevation for the guns.
The fire-control radar must be directed to the general location of the target due to the radar's narrow beam width. This phase is also called "lighting up". [3] It ends when lock-on is acquired. Acquisition phase The fire-control radar switches to the acquisition phase of operation once the radar is in the general vicinity of the target.
In this U.S. Army Coast Artillery Corps plotting room, the table is a Whistler-Hearn plotting board.Other devices for fire control are visible on the table. Cut-away view of a Royal Navy World War II K-class destroyer Director Control Tower (D.C.T.) with Type 285 radar; plotting room shown on lower level This massive concrete casemate housed the underground plotting room for the 12-inch ...
The Type 904 radar tracker was also developed as a derivative of the GWS.22 Seacat air defense missile system. [4] In addition, the Mk.64 GUNAR, which changed the shooting command radar to the gun side equipment (initially the same AN/SPG-34 as the Mk.63, later AN/SPG-48), was also developed, and this was mainly used by the Royal Canadian Navy.
The Mark 92 Fire Control System is a US-built medium-range anti-aircraft missile and gun fire control system. It was developed for the FFG-7 Oliver Hazard Perry class guided missile frigates. The system is a licensed USN version of the Thales Nederland WM-25 fire control system. The Mark 92 fire control system was approved for service use in 1975.
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The primary means of controlling the main armament are two Mark 38 directors for the Mark 38 fire-control system mounted at the tops of the fore and aft fire-control towers in the superstructure. These directors were equipped with 25-foot-6-inch-long (7.8 m) rangefinders , although their primary sensor was the Mark 8 fire-control radar mounted ...