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Torpedo Attitude Sensor Unit

Technical Information

Catalogue No: C0575
Category: Navigation/Inertial
Object Type: Sensor/Transducer
Object Name: Torpedo Attitude Sensor Unit
Part No: 62D2387
Serial No: Ex 2
Manufacturer: Elliott
Division: Guidance Systems [GSD]
Platform(s): Sting Ray Torpedo 
Year of Manufacture: 1965
Width (mm):
Height (mm):
Depth (mm):
Weight (g):
Location: Main Object Store

Type No 62D 2387
Serial No Ex2


This ASU is an experimental unit No.2

In 1965 a funded contract was awarded by the Admiralty Underwater Weapons Establishment to investigate solutions to building a ruggedised Attitude Sensor Unit (ASU), later called a Control Sensor Unit (CSU) for a projected new lightweight Torpedo which became Sting Ray. The unit was required to withstand 150g shock.

The Company Research Lab. (FARL) developed a strapdown system using simple rate gyros and accelerometers with all electronic computation (initially analogue). The ASU is an advanced, strapped-down attitude sensing and control unit with basic advantages over the contemporary torpedo sensing and control systems.

The unit is small, light, very rugged, inherently drift free and, apart from its mechanical transducers, the ASU is all solid state. It is inherently flexible and with minor variations can be applied in many types of underwater weapons.

The first trial took place in 1966 in a van at West Malling Airfield using an E3 Platform as a reference. In 1967 the system was brought into production by the then Gyro Division and the Sting Ray Torpedo entered service in 1983.

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