Low Cost PC Based Real-Time Dynamic Terrain

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$99,822.00
Award Year:
1999
Program:
SBIR
Phase:
Phase I
Contract:
A982-2163
Award Id:
44896
Agency Tracking Number:
A982-2163
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
400 Plaza Drive, Suite D,, P.O. Box 1276, Vestal, NY, 13851
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Graham Upton
(607) 729-8351
Business Contact:
() -
Research Institute:
n/a
Abstract
Not Available Pulse tube cryocoolers are the cutting edge of regenerative cryocooler development. Their simplicity, ruggedness and reliability recommend them over older technology. Innovative improvements (the double inlet, the inertance tube) have brought orifice pulse tube cooler performance into the range of Stirling and Gifford-McMahon coolers. Double inlets and inertance tubes improve phasing of flows at the warm end of a pulse tube. However, both double inlets and inertance tubes are bulky and, in some respects, balky. The double inlet approach requires careful calibration of the bypass flow between compressor and pulse tube. DC flow is possibe, and common. The double inlet does not always work well, or at all. Inertance tubes work well only with relatively large pulse tube coolers running at relatively high speeds. Efficiency of all regenerative coolers remains far below Carnot limits and much more improvement is possible. This proposal applies the magnetocaloric effect to modify flow phasing of a pulse tube cryocooler. It offers a compact, simple improvement with no moving parts.

* information listed above is at the time of submission.

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