SIDEWINDER RECHARGING UNITS (SRU)

McNaughton Dynamics Limited has developed a new universal “Sidewinder Recharging Unit” to supply all Nitrogen requirements for the Sidewinder Missile in addition to both high and low pressure gaseous Nitrogen for aircraft systems.

This innovative design provides large amounts of Nitrogen gas from a liquid Nitrogen tank, for charging aircraft and missile Nitrogen systems of all capacities. It is based on the successful Zwick range of Cryogenic Servicing Units, in service with air forces worldwide for the last forty years.

Designed to be very simple to operate, the self-pressurising Sidewinder Recharging Unit (SRU) fills LAU–7 cylinders, 3860 and 4044 Test Sets and aircraft systems safely and quickly from one source of liquid. The cylinders can be charged on the flight line, giving a rapid turn round of the aircraft and minimising the transportation and handling of these vulnerable cylinders.

The machine is filled with 300 Litres of Liquid Nitrogen which is stored in a 400 psi / 27 bar cryogenic tank. Some of the liquid is boiled off and used to pressurise the tank so as to provide a continuous supply of pressure. A patented internal pump provides high pressure Nitrogen upon demand. After the tank and pump, the liquid is vaporised into gas by aluminium heat exchangers, warmed to ambient temperature and delivered to the control panel for distribution to the aircraft through two hoses and control valves.

Many air forces of the world have requirements for high–pressure pure Nitrogen (for charging LAU–7 cylinders used on the Sidewinder missile) and both high and low pressure Nitrogen (for filling tyres, struts and accumulators). It therefore made sense for us to develop an “all in one’ Sidewinder Recharging Unit. With an internal pump that is always available for use, the SRU can also deliver large quantities of high pressure gaseous Nitrogen for LAU 7 cylinder charging as well as other aircraft systems, again both on and off the aircraft. It can also be used for charging aircraft cylinder trolleys and supplying the 3860 and 4044 missile test sets. The SRU is fitted with an additional purifying system consisting of replaceable molecular sieve cartridge purifiers. In addition, it can be fitted with an optional Cryostat purity monitoring system.

FEATURES & BENEFITS

• Simple to operate.

• Charges missile LAU 7 cylinders, test sets and aircraft systems quickly and safely.

• HP and LP gas from one machine.

• Continuous pressure, no pressure raising time delays.

• Highly reliable unit with few moving parts.

• Low maintenance requirements.

• Based on robust military design.

• Standard NATO fill connector.

• Air transportable in operating condition.

• Self contained, no electrical power or fuel required.

• Simultaneous operation of all three systems.

• Four LAU 7 cylinders can be charged simultaneously.

• Can supply the 3860 and 4044 missile test sets.

FULL SPECIFICATIONS

PURITY SPECIFICATION