Accession Number:

AD0902944

Title:

Development of Spacecraft Vuilleumier Cryogenic Refrigerators. Part II. Development and Fabrication.

Descriptive Note:

Interim technical rept. no. 2, 1 Oct 71-1 Jun 72,

Corporate Author:

PHILIPS LABS BRIARCLIFF MANOR NY

Personal Author(s):

Report Date:

1972-07-01

Pagination or Media Count:

66.0

Abstract:

The design layout of the refrigerator was completed during this period. The detail design is 90 complete fabrication is 30 complete. A significant effort was made to reduce the weight of the refrigerator while not impairing the reliability and high efficiency sought. Tests on life-limiting components were continued. Pertaining to the refrigerator electronics, the following has been established the system for controlling the temperature of the hot cylinder was selected the motor control circuitry is being fabricated the signal conditioning circuitry was designed. Studies were conducted on gas and fluid retention in magnesium materials. A developmental model of the pressure difference regulator for the rolling seals was built results were satisfactory. A suitable elastomeric material was selected for the oil-helium separator. Author

Subject Categories:

  • Air Conditioning, Heating, Lighting and Ventilating
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE