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Tachymetric anti-aircraft fire control system
Videos
A tachymetric anti-aircraft fire control system generates target position, speed, direction, and rate of target range change, by computing these parameters directly from measured data. The target's ra
Mark 37 Director c1944 with Mark 12 (rectangular antenna) and Mark 22 "orange peel"
Mark 37 Director c1944 with Mark 12 (rectangular antenna) and Mark 22 "orange peel"
Gyro rate unit
Videos
Gyro rate unit refers to a fire-control computer developed by the Royal Navy of the United Kingdom in 1937, and which was used extensively on British warships in World War II. In the 1930s the Royal N
Tachymetric anti-aircraft fire control system
…Angle Control System (HACS) I through IV and the early Fuze Keeping Clock (FKC) were examples of non-tachometric systems. By 1940 the RN was adding a Gyro Rate Unit (GRU) which fed bearing and elevation data to a Gyro Rate Unit Box computer (GRUB), which also received ranging data to calculate target speed and…
Pom-pom directors, Mk IV on HMS King George V. The large rectangular box centered above the director contains the Gyro Rate Unit. This image was taken
Pom-pom directors, Mk IV on HMS King George V. The large rectangular box centered above the director contains the Gyro Rate Unit. This image was taken early in King George V's career as the directors do not yet have Type 282 radar.