The new system combines a vacuum external catheter and a combined forward and reverse osmosis unit to provide a continuous supply of drinking water. This allows astronauts to reuse water lost through sweating and urination.
The prototype is designed for NASA’s 2025 and 2026 missions and consists of a multi-layered undergarment made of elastic fabric that connects to a molded silicone urine collection cup. This cup covers the genitals and directs urine to a vacuum pump. The urine is then filtered with 87% efficiency, separating the water from urea and salts and enriching it with electrolytes, before being transferred to a drinking bag.
The system processes 500 millilitres of urine in five minutes, powered by a 20.5-volt battery with a capacity of 40 amp-hours. Its compact dimensions (38 x 23 x 23 cm) and weight of eight kilograms allow it to be carried on the back of a spacesuit.
The researchers plan to test the system in simulated microgravity conditions to ensure its functionality and safety.
Source: Ferra
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