Energetic Sub-Systems sector brochure - Chemring Group PLC

Energetic sub-systems of the highest quality and reliability, for a range of mission critical systemsCADs and PADsChemring designs and manufactures Cartridge Actuated Devices (CADs) and PropellantActuated Devices (PADs) used for a variety of functions including crew egress andweapon sub-systems. These products can also be used to start turbines and engines,as part of explosive ordnance disposal systems or for decoy dispersion and missilegyroscope energisation. Actions can be summarised as follows:• Puncturing containers(e.g. to release high pressure gas)• Pushing mechanical loads (e.g. opening valves)• Locking a device to prevent rotary or linear motion• Releasing a device to enable rotary or linear motion• Operating a sprinkler bulb• Operating a switch or delay• Cutting wires or small boltsPin Pullers and Pin PushersAlso known as protractors and retractors, our Pin Pullers and PinPushers are controlled-release mechanisms used in applicationsrequiring instant detachment of structural fittings, mechanisms,rods, cables, booms or parachutes. After functioning as structuraldevices and carrying full tensile or shear loads, these productsrelease upon command by an attached Chemring initiator. Fullretraction or protraction of the pin is achieved by pressurized gasdriving against the piston pin.ActuatorsActuators are highly reliable, compact single shot devices whichcan push, pull, cut or shear with a power-to-weight ratio in excess of10,000:1. They operate within milliseconds of receiving the appropriateelectrical impulse, a rate which is almost impossible to achieve witha mechanical source of energy. Actuators are ideal for remotecontrolled applications.Ejection Release UnitsCartridge Ejection Release Units (CERUs) provide gas pressure tooperate Aircraft Ejector Release Units (EJUs), for stores ejection oncombat aircraft.Gas GeneratorsGas Generators are self-contained units that can either be electricallyor percussion operated. Typical operating times vary between 25milliseconds to 250 seconds with operating temperatures in the range of-32°C to + 60°C. Specialised propellants can be incorporated to extendthe temperature range from -54°C to +150°C. Typical applications include:• Fluid Displacement• Liquid Fuel Igniters• Pressurisation of hydraulic power supplies• Ejection Release Units• Buoyancy Devices• Inflation of flame retardant fabric structuresOther CAD / PADs• Igniters and Fuseheads• Detonators• Cutters• Explosive Bolts• Release / Low Shock Bolts• Separation Nuts• Detent Actuators‘Metron’ Actuators.Gas Generators.4 Energetic Sub-Systems Delivering global protection