High-Reliability Gas-Bearings for Military Air Cycle Machines

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$79,919.00
Award Year:
2010
Program:
SBIR
Phase:
Phase I
Contract:
N68335-10-C-0105
Award Id:
98202
Agency Tracking Number:
N093-184-0343
Solicitation Year:
n/a
Solicitation Topic Code:
NAVY 09-184
Solicitation Number:
n/a
Small Business Information
P.O. Box 71, Hanover, NH, 03755
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
072021041
Principal Investigator:
Mark Zagarola
Principal Engineer
(603) 643-3800
mvz@creare.com
Business Contact:
James Barry
President
(603) 643-3800
contractsmgr@creare.com
Research Institute:
n/a
Abstract
Air cycle machines (ACM) are critical components that provide refrigeration in military and commercial aircraft. These systems extract bleed air from the aircraft's engines or an auxiliary power unit, and refrigerate it for cooling the environment or electronics. Currently, ACMs utilize hydrodynamic foil-bearings to support the expansion turbine at high operating speeds. These bearings have exhibit premature degradation or failure due to contamination and bearing overload. Creare's proposed approach is an advanced oil-free bearing system that meets both high-load capacity and high-reliability requirements for demanding ACM systems by: (1) eliminating start-up and shut-down preload forces, (2) utilizing hard-coatings on the bearing surfaces, and (3) implementing an active contamination mitigation system. The bearing concept has heritage from our high reliability turbomachines for long-duration space missions. During the Phase I project, we will demonstrate feasibility of our innovation for ACM applications through load and contamination tolerance testing on the journal bearings. Once feasibility is established, we will begin extending the system to ACM thrust bearings during the Option Phase. During Phase II, we will implement our bearing technology into an F 18 ACM platform and demonstrate the load capacity and reliability of our system in an operational ACM.

* information listed above is at the time of submission.

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