Nitrogen generation, charging & distribution. 350 Bar.

Why mobile nitrogen generation matters

Aircraft nitrogen systems — landing gear struts, brake accumulators, fuel tank blankets, tyre charging — require periodic replenishment with high-purity, dry nitrogen. Conventionally, this means maintaining a supply chain of high-pressure cylinders: ordering, transporting, handling, exchanging, and returning empties. At a forward operating location or during a surge in operations, that supply chain can become a critical bottleneck.

UGSSN2 eliminates the supply chain for nitrogen. The vehicle generates nitrogen from atmospheric air wherever it is parked — no cylinders to source, no logistics lead time, no dependency on a gas supplier. The only consumables are electricity and the occasional replacement of molecular sieve media or filtration elements — both long-interval items measured in years, not weeks.

PSA technology explained

How Pressure Swing Adsorption works

Atmospheric air contains roughly 78% nitrogen and 21% oxygen. PSA exploits the different affinities of nitrogen and oxygen for carbon molecular sieve (CMS) media under pressure. When compressed air is forced through a CMS bed, oxygen is preferentially adsorbed. Nitrogen passes through relatively unimpeded, yielding a gas stream at 99.5% purity or higher at the bed outlet. Two CMS beds alternate in duty: one adsorbs while the other regenerates (desorbs oxygen) at lower pressure. The cycling is controlled automatically and produces a near-continuous nitrogen output stream.

Drying and filtration

UGSSN2 dries the gas to a dew point of −65°C at 150 kg/cm² — preventing ice formation in aircraft systems at any altitude or temperature within the operating envelope. Inlet and outlet 0.01-micron filters with clogging indicators capture particulates; elements are field-replaceable without specialist tools.

High-pressure cascade storage

PSA output pressure is far below the 350 Bar required for aircraft cylinder charging. UGSSN2 uses an electrically or pneumatically driven booster compressor at a minimum 10:1 pressure ratio to bring nitrogen to working pressure. The boosted gas fills the on-board cascade: 16 cylinders of 40 litres each, totalling 640 litres at 350 Bar, divided into four sub-sections with individual control and isolation valves on the distribution panel.

Military-grade environmental ruggedness

UGSSN2 is specified for the full operational environment of an Indian Air Force airbase — rain, salt fog, 100 km/hr wind loading, −20°C to +55°C, and altitude up to 3,500 m above sea level, covering high-altitude airbases in the Himalayan sector. All enclosures, connectors, and pneumatic components are selected for this environment.

Integration with wider nitrogen infrastructure

UGSSN2 works in conjunction with fixed nitrogen generation plant at main operating bases. For base-level infrastructure, Neometrix's PSA Nitrogen Generation Plant provides high-capacity, fixed-installation supply. The Nitrogen Cart with Booster and Nitrogen Gas Boosting Station complement UGSSN2's mobile architecture for point-of-use distribution.