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A 4-Kelvin Pulse-Tube/Reverse-Brayton Hybrid Cryocooler

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2006 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Atlas Scientific
1367 Camino Robles Way San Jose, CA 95120-4925
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2006
Title: A 4-Kelvin Pulse-Tube/Reverse-Brayton Hybrid Cryocooler
Agency: NASA
Contract: NNC06CB18C
Award Amount: $69,727.00


NASA's ability to perform cutting edge space science, including lunar and planetary exploration, requires the use of cryogenically cooled detectors and sensors for advanced scientific instruments and telescopes. For example, to improve the signal-to-noise ratio of cryogenic IR focal plane arrays it is desirable to have on-focal plane, high-resolution, analog-to-digital data converters. Such A/D converters and supporting technology are currently in various stages of development. These and other detectors and sensors will require improvements in cryogenic system technology, including the development of lightweight, low vibration, highly-efficient, long-life cryocoolers if their useful lifetime is to be extended beyond a couple of years. To address these requirements, Atlas Scientific proposes to develop a 4K cryocooler that combines the efficiency of a recuperative, reverse-Brayton, low-temperature stage with the simplicity of a regenerative, pulse-tube, upper stage. The PT/RB hybrid is an innovative cooling system capable of achieving temperatures in the range of 4 to 10 K and is ideally suited to the requirements of many future space-based applications. The hybrid system addresses the issues of cryocooler vibration, reliability, and efficiency, while simultaneously providing an innovative approach to the challenge of interfacing a cryocooler with low-temperature detectors, sensors, and electronics.

Principal Investigator:

James R. Maddocks
Principal Investigator

Business Contact:

Ali Kashani
Program Director
Small Business Information at Submission:

Atlas Scientific
1367 Camino Robles Way San Jose, CA 95210

EIN/Tax ID: 770281491
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No