EVA Development Flight Experiments (EDFE)

April 1991. This mission featured the EVA Development Flight Experiment (EDFE). Crewmembers tested means for
moving both crew and equipment about the proposed Space Station Freedom.

The EDFE (EVA Development Flight Experiment) consists of three elements: (1) flight-testing various methods of getting around
large space structures; (2) learning how much force an
EVA astronaut can exert to rotate a bolt or move a piece of equipment;
and (3) finding the most efficient ways to use the Shuttle's RMS to
aid an EVA astronaut in moving to work sites and installing
equipment.