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High Efficiency 4 K Cryocooler for Space Missions

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC19C0169
Agency Tracking Number: 189542
Amount: $749,995.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: S1
Solicitation Number: SBIR_18_P2
Solicitation Year: 2018
Award Year: 2019
Award Start Date (Proposal Award Date): 2019-07-10
Award End Date (Contract End Date): 2021-07-09
Small Business Information
16 Great Hollow Road
Hanover, NH 03755-3116
United States
DUNS: 072021041
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Mark Zagarola
 (603) 643-3800
Business Contact
 Betsy Williams
Phone: (603) 643-3800
Research Institution

Future astrophysics missions require efficient, low-temperature cryocoolers to cool advanced instruments or serve as the upper-stage cooler for sub-Kelvin refrigerators. Potential astrophysics missions include Lynx, the Origins Space Telescope, and the Superconducting Gravity Gradiometer. Cooling loads for these missions are up to 300 mW at temperatures of 4 to 10 K, with additional loads at higher temperatures for other subsystems. Due to low jitter requirements, a cryocooler with very low vibration is needed for many missions. In addition, a multi-stage cooler, capable of providing refrigeration at more than one temperature simultaneously, can provide the greatest system efficiency with the lowest mass. Turbo-Brayton cryocoolers have space heritage and are ideal for these missions due to negligible vibration emittance and high efficiency at low temperatures. The primary limitation in implementing Brayton cryocoolers at temperatures below 10nbsp;K has been the development of high efficiency turbines. On the proposed program, Creare plans to leverage recent developments in gas bearing technology and low-temperature alternators to realize a high-efficiency, low-temperature turbine. On the Phasenbsp;I project, we successfully performed a proof-of-concept demonstration of the turbine technology. On the Phasenbsp;II project, we will build and demonstrate an advanced low-temperature turbine at temperatures of 4 to 10nbsp;K.

* Information listed above is at the time of submission. *

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