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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 19 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1964

Snap-8 electrical system.

Snap-8 electrical system and design modifications incorporated early in 1963, including alternator and pump motor changes

NUCLEAR-ELECTRIC POWER SUPPLY↗
NASA NTRS1963

SNAP-8 third loop optimization

Eutectic sodium potassium and OS-124 considered as coolant fluids for SNAP-8 third loop - optimum loop operating parameters

EUTECTIC ALLOY↗
NASA NTRS1961

Mission Capabilities of Ion Engines Using SNAP-8 Power Supplies

Mission performance capabilities of ion engines powered by the 30 kw and 60 kw SNAP-8 power supplies are compared for the following missions: a 24-hr equatorial satellite, a 100 n mi lunar satellite, a 500 n mi Mars satellite, a Mercury probe, and an out-of-the-ecliptic probe. The capabilities of arc- jet engines and chemical engines for the same missions are compared with those of the ion engines. The majority of the comparisons are for 8500-lb spacecraft which are boosted into a 300 n mi orbit by the Atlas-Centaur. Variations in initial orbit altitude, the use of actual launch dates rather than dates based on simplifying assumptions, and the combined use of chemical and electrical propulsion systems were also evaluated in terms of their effect on mission performance.

IONIC PROPULSION↗
NASA NTRS1962

THE NASA NUCLEAR ELECTRIC POWER PROGRAM

The aim of the NASA nuclear electric power program is to provide long-lived reliable nuclear power sources in the range from tens of watts to tens of megawatts for advanced missions. The work is conducted in corporation with the U.S. Atomic Energy Commission which is developing isotope power sources and the reactor for the SNAP-8 project. Isotopes are considered for missions requiring up to several hundred watts of power. SNAP-8 will provide about 35 to 60 kilowatts for missions requiring tens of kilowatts and lifetimes of about one year. SNAP-8 has been redesigned to emphasize reliability and performance. This decision permits many components to operate at lower, more nearly state-of-the -art temperatures at the sacrifice of greater cooling requirements and increased weight. Beyond SNAP-8, an extensive applied research program has been conducted since 1959 to provide the technology required for the sound development of light weight nuclear electric systems in the megawatt range for lifetimes of up to several years. The work is accomplished in university, industrial and government laboratories.

SPACECRAFT POWER SUPPLY↗
NASA NTRS1963

Cup-seal interface characteristics

Stability tests of liquid-liquid and liquid-vapor interfaces in test rig simulation of dynamic seal for SNAP-8 turbine alternator assembly

STABILITY TEST↗
NASA NTRS1963

THE NASA NUCLEAR ELECTRIC POWER PROGRAM

Review of present and proposed research concerning nuclear electric power for space applications, including objectives of the snap-8 project

NUCLEAR-ELECTRIC POWER SUPPLY↗