Accession Number : AD0818996

Title :   PROGRAM 631A. VOLUME XIII. TECHNICAL REPORT. EXPERIMENT D-16: SPACE POWER TOOL.

Descriptive Note : Summary rept. 15 Aug 64-16 Feb 67,

Corporate Author : MARTIN CO BALTIMORE MD

Personal Author(s) : Daisey, Floyd K.

Report Date : JUN 1967

Pagination or Media Count : 121

Abstract : The problem of reacting the forces and torques applied by an astronaut performing extra-vehicular maintenance has been recognized for several years. One possible solution is to provide the space worker with reactionless tools. A minimum-reaction wrench (the Space Power Tool) was developed under Air Force sponsorship, to confirm this solution aboard an orbiting Gemini vehicle during EVA. The hand-held, battery-powered tool is capable of tightening one-hundred 3/8-inch bolts to a minimum torque of 45 ft-lbs. Experiment hardware was stored in a restraint assembly, which protected the equipment from vibration, shock, and intensive heat. A simple ratchet wrench was included for purposes of comparison in assessing the effectiveness of the reactionless tool. These were to be used for torquing a special bolt, instrumented with strain gages, and for removing and replacing a seven bolt work plate. Both units were mounted on the side of the restraint assembly. Two sets of space-qualified hardware (a Space Power Tool, ratchet handtool, instrumented bolt, work plate, and restraint assembly) were integrated into the retrograde adapters of Gemini Spacecraft 8 and 11. Astronauts were trained aboard a specially-equipped KC-135, flying a zero-g Keplerian trajectory. Training hardware was identical to the flight equipment. (Author)

Descriptors :   (*SPACE TOOLS, EXTRAVEHICULAR ACTIVITY), MANNED SPACECRAFT, PORTABLE EQUIPMENT, TORQUE, SPACE MAINTENANCE, VIBRATION, IMPACT SHOCK, THERMAL STABILITY, STRAIN GAGES, BOLTS, SIMULATION.

Subject Categories : Manned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE