Accession Number:

AD0815583

Title:

SNAP 50/SPUR NUCLEAR MECHANICAL POWER UNIT EXPERIMENTAL RESEARCH AND DEVELOPMENT PROGRAM. PART II. BEARINGS.

Descriptive Note:

Final rept. May 62-Dec 66,

Corporate Author:

GARRETT CORP PHOENIX AZ AIRESEARCH MFG DIV

Report Date:

1966-12-31

Pagination or Media Count:

506.0

Abstract:

Various combinations of bearing and seal materials have been evaluated to determine compatibility, torque values, and wear rates. It has been shown in these tests that an alloy of tungsten-carbide is well suited to the environment and operating conditions of a potassium turbine. Fundamental heat-transfer data has verified boiling stability and the high heat-transfer coefficients associated with potassium. This has been demonstrated with full-scale multitube boiler modules on two separate occasions. Tests of bearings, seals and rotor systems have shown the pivoted-pad bearing system to be well suited to meet the wide range of operating conditions anticipated for the potassium turbogenerator. Sufficient design parameters are available to develop a potassium turbine for a space system. Data now exists to reasonably predict system performance, material selection, and component design to meet a wide range of power-system requirements.

Subject Categories:

  • SNAP (Systems for Nuclear Auxiliary Power) Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE