| Development of a Temperature Controller for a Vuilleumier (VM) Cycle Power Cylinder. |
OCT 1975 |
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| Authors:
Richard H. Spencer; LITTLE (ARTHUR D) INC CAMBRIDGE MA
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 | Development of a temperature controller for the hot end of a Vuilleumier (VM) cryogenic cooler system is presented. The objectives of a low-cost, moderate reliability, environmentally tested controller are met in the design presented. Fundamental design factors include: use of an on/off controller operating from the 28-volt aircraft bus, use of a platinum resistance temperature sensor, packaging within 25 cubic inches, use of class P components, and an estimated mean-time-between-failure ... |
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| Design Study of a Rotary Reciprocating Thermal Compressor. |
OCT 1974 |
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| Authors:
R. W. Breckenridge Jr.; R. W. Moore Jr.; P. M. O'Farrell; LITTLE (ARTHUR D) INC CAMBRIDGE MASS
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| This report presents the results of a design study program on a rotary reciprocating compressor which uses heat as the source of driving energy. The objective of the study program was to determine the feasibility of using a thermal compressor in a spaceborne, cryogenic refrigeration system. The report explains the principles of operation of a thermal compressor, and presents the equations which describe its behavior. It also describes a computer ... |
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| Ultraminiature Vuilleumier Refrigeration System. |
MAR 1974 |
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| Authors:
Robert L. Berry; HUGHES AIRCRAFT CO CULVER CITY CA AIR DEFENSE ELECTRO-OPTICAL LAB
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| This report describes the development of an ultraminiature, Vuilleumier (VM) cycle, cryogenic refrigeration system for infrared type systems. The refrigerator that was designed and fabricated is a liquid cooled machine producing 0.75 watt of refrigeration at 77 K in an ambient environment of 80 F. The system consists of the refrigerator, a solid state electronic temperature controller, and an auxiliary cooling supply. Major design objectives were to make the refrigerator ... |
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| Vuilleumier Cycle Cryogenic Refrigeration System for Missile Guidance Applications. |
AUG 1971 |
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| Authors:
F. J. Riha III; HUGHES AIRCRAFT CO CULVER CITY CA AIR DEFENSE ELECTRO-OPTICAL LAB
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| The report describes the development of a Vuilleumier (VM) cryogenic refrigeration system for the infrared seeker of a medium sized missile of the AIM-9E class. The refrigeration was designed for installation within the nose cone section of the missile; such an installation required an 'in-line' design. To make it operable in the high-temperature environment of the missile, the cold end of the refrigerator was designed with two stages. A molten ... |
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| Effects of a Controlled Atmosphere System on the Storage Life of Lettuce. Part I. Laboratory Tests. |
OCT 1969 |
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| Authors:
Harold Gorfien; Abdul R. Rahman; Karl R. Johnson; Edward E. Anderson; ARMY NATICK LABS MA FOOD LAB
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| Laboratory tests were conducted to determine the effects on lettuce of TECTROL, a proprietary system for shipping fresh vegetables and fruits in specially proportioned atmospheres in refrigerated containers and rail cars. Storage periods approximating the extended overseas shipping and distribution time frames of four to eight weeks required by the military were used. The tests showed that where controlled atmospheres were maintained, significant improvements in quality and storage life were ... |
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| CLOSED LOOP NITROGEN-NEON COOLER. |
08 JUL 1963 |
3 pages |
| Authors:
John P. Walker Jr; HRB-SINGER INC STATE COLLEGE PA
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 | The basic objective of this program is that of procuring a closed loop nitrogen-neon cooler with interchangeable Ge:Hg and InSb detectors. The technique by which this objective will be met was altered in April by supplement to the contract dated 15 April 1963. This supplement permits the use of a modified sterling cycle cooler to reach the required temperatures and waives the requirement that the compressor must be physically removed ... |
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Reports by Keyword(s)
(REFRIGERATION SYSTEMS
