Babcock contracted to provide Astute 6 & 7 weapons handling and launch system
This full system contract follows one awarded last year for long-lead items, amounting to a total value of circa £55 million.
The Astute class WHLS is the first on a Royal Navy submarine to use Babcock’s advanced air turbine pump (ATP) and programmable firing valve (PFV) technology. The ATP is an air driven rotary pump that displaces a volume of water to launch a weapon from a torpedo tube. The PFV is used to control the ATP firing air profile, allowing the system to match the launch requirements precisely to a range of variables including weapon type, boat speed and depth.
The system is more compact than previous systems, and according to Babcock is more efficient (using substantially less firing air), and quieter with a lower noise signature, as well as having lower maintenance requirements and reduced through-life costs. Two ATP/PFV systems are installed per boat, giving independent port and starboard operation providing operational and reliability benefits.
Further, the Astute class WHLS from Babcock is capable of carrying more torpedoes and tube-launched missiles than any previous class of RN submarine, and comprises equipment to embark, store, reposition and load weapons into the torpedo tubes. Configuration of the weapons within the Weapon Stowage Compartment (WSC) has been developed to provide the highest weapon packing density, and the weapons are protected in the WSC using a unique method of shock mounting, providing adaptable protection according to the number of weapons stored on each stowage tier. This improves crew safety and maximises potential for the system to continue to function following a shock event.
Babcock has designed and supplied the WHLS for the first five Astute class boats (Astute , Ambush , Artful , Audacious and Anson ) under previous contracts. The first of the equipment for boat six under this latest contract is scheduled for delivery in spring 2014.
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