The Torso Assembly is now in Phase B, Concepting & Definition. Quite literally at the heart of the PSEMU¹, the Torso Assembly is the only assembly that interfaces directly with all the other assemblies of the suit.
For ease of use the PSEMU is put on like a regular outfit, it’s split at the waist. The Torso and Pants Assembly feature a large round pressure zipper that connects them to each other. Once connected it remains flexible so it does not hamper maneuverability.
The gloves and helmet are connected with bayonets that feature large buttons so they can easily be used by the wearer, this allows the PSEMU to be put on by the astronaut without the need for assistance.
Because the astronauts must be able to move in low pressure environments, the PSEMU features convolute joints. These joints allow the wearer to bend their arms without changing the internal volume of the suit.
The PSEMU is pressurised through a combination of mechanical counterpressure² and air pressure during use.
¹PSEMU: Planetary Surface Exploration Mobility Unit
²Mechanical Counterpressure: Pressure against the skin by means of skintight elastic garments.