Type 22 radar

Type 22 radar. The Type 22 was a British S band surface search radar developed during the latter stages of the Second World War. Designed to provide superior target discrimination and accuracy for gunnery control, it represented a significant technological advancement over earlier metric wavelength sets. It entered service with the Royal Navy and saw extensive use in the postwar period on a variety of destroyers, frigates, and other surface combatants.

Development and design

The development of the Type 22 was driven by the limitations of existing radars like the Type 285 and the need for more precise fire control against surface targets and low-flying aircraft. Engineers at the Admiralty Signal Establishment leveraged emerging microwave technology, utilizing the S band frequency which allowed for a narrower beam and a much higher resolution picture. This new design incorporated a plan position indicator for comprehensive situational awareness and was integrated with the Mk. VI Director and later the MRS 3 fire control system. The project benefited from ongoing research into cavity magnetron technology and collaboration with allied scientists through initiatives like the Tizard Mission.

Technical specifications

Operating in the S band at a frequency of approximately 3 GHz, the Type 22 offered a marked improvement in angular accuracy and target discrimination compared to its predecessors. Its antenna system, a truncated parabolic reflector, produced a narrow, pencil-like beam ideal for precise range and bearing measurement. The set typically operated at a peak power in the range of several hundred kilowatts and could detect a destroyer-sized target at distances well over 20 nautical miles under good conditions. Its output was displayed on both a plan position indicator for search and a more precise display for the fire control table, feeding critical data to systems like the Fuse Keeping Clock.

Operational history

The Type 22 first entered operational service in 1944, seeing action in the final year of the Second World War aboard vessels engaged in the Battle of the Atlantic and coastal operations. It proved highly effective for directing the main armament of cruisers and destroyers against surface threats and for providing warning against incoming kamikaze attacks in the Pacific War. Postwar, it became a standard fitting on new construction ships such as the Battle-class destroyer and the Daring-class destroyer, and was widely retrofitted onto existing fleet units during modernizations. The radar remained in frontline Royal Navy service through the Korean War and the Suez Crisis, providing reliable service until gradually supplanted by newer systems like the Type 993.

Variants

The primary variant was the Type 22M, which featured a modified antenna and improved display systems. For smaller vessels that could not accommodate the full-sized director system, the Type 22P was developed as a lighter, simplified version. Further developments led to the Type 22Q, which incorporated a conical scanning feature for enhanced tracking accuracy. These variants ensured the radar's utility across a wide range of Royal Navy platforms, from large aircraft carriers to smaller sloops. Export versions were also produced and formed the basis for several indigenous radar developments within other navies.

Operators

The primary operator was the Royal Navy, which equipped numerous classes of ships throughout the Cold War. It was also widely exported to allied and Commonwealth navies, including the Royal Australian Navy, the Royal Canadian Navy, and the Indian Navy. Other operators included the Royal Netherlands Navy, the Portuguese Navy, and several South American navies such as those of Chile and Venezuela. The radar's robust design and effectiveness ensured its longevity in secondary roles with some operators well into the 1970s.

Category:Radar