Verifying the fit of mating contoured surfaces
Simple inexpensive process uses commercially available compressible film to verify fit between mating metal surfaces within 0.08 mm to 0. 13 mm.
Leonard, W. D.↗
Engineering topics
Leonard, W. D.
Publications and source records attributed to Leonard, W. D..
Power source considerations for Grand Tour missions.
At the present time, there exists no known power source that will satisfy the power, weight, lifetime, and other stringent requirements of an extended outer-planet mission. Exploratory studies indicate the need for a solar-independent power source capable of supplying approximately 500 W of power over mission lifetimes of up to 12 years. The only known power source which can possibly meet these requirements, in the 1975 to 1979 time period, is a radioisotope thermoelectric generator (RTG). In 1969 a program began to develop a long-life, plutonium-fueled radioisotope thermoelectric power system. Aspects of spacecraft configuration are discussed together with power source requirements, RTG/spacecraft integration, operational details, and problems of safety.
Merrill, O. S.↗
Study of the utilization of the multi-hundred watt radioisotope thermoelectric generator for Jet Propulsion Laboratory outer planet missions
Multihundred watt radioisotope thermoelectric generator for JPL outer planet missions, discussing vacuum/xenon filled performance and response to thermal/electrical transients
Leonard, W. D.↗
Radioisotope thermoelectric generator optimization technique
Grand tour missions radioisotope thermoelectric generator power source, presenting optimization technique for hot thermocouple junction operation
Leonard, W. D.↗
Qualitative V/STOL air traffic control requirements.
Qualitative V/STOL air traffic control requirements, discussing airborne and ground data, procedures and equipment categories
Hudock, R. P.↗