Designing the 'end effectors' or gloves of a spacesuit is notoriously difficult. Hands have are extremely flexible and are the primary interface that humans use to interact physically with the world.
Current EVA suits use gas pressurized gloves with are not very easy to use, very thick, and impractical. Astronauts frequently comment on how hard it is to use these gloves and the strain it places on the hands. In development are mechanical counter-pressure gloves but these currently only score marginally better than traditional gloves, need to be tailored per person, and take a long time to don and doff.
Hard-shell deep sea diving suits frequently don't use gloves but rather have the hands in a pressurized compartment where the user actuates a mechanically linked claw which is outside of the pressurized compartment.
- Has NASA or other space agency ever used/investigated such a design for their EVA suit gloves?
- Is there any research or development on more complex end effectors (Instead of just a claw; maybe semi-articulated fingers?)