Honeywell International Inc.

Jon E Schryver

Sunil K Menon

David G Elpern

Girija Parthasarathy

Giorgio C Isella

Timothy J Lippold

Jeff A Lotterman

Alex Morando

The present invention provides a system and method for cooling the bleed air supply in an on-board inert gas generation system. The gas generation system cools the bleed air using a turbocompressor in conjunction with heat exchangers. Exhaust from a regenerative heat exchanger providing air to the turbocompressor is ported to a ram air outlet using a flow-restriction/ejector unit.

On-board inert gas generation turbocompressor systems and methods

Methods and apparatus are provided for predicting ice formation on and shedding from blades of an air cycle machine ('ACM') turbine. The method comprises generating operational condition data representative of ACM turbine operating conditions using a software model of the ACM, determining an amount of ice formation on the blades of the ACM turbine, and determining an amount of ice shed from the blades of the ACM turbine. The apparatus comprises means for generating operational condition data representative of ACM turbine operating conditions using a software model of the ACM, means for determining an amount of ice formation on the blades of the ACM turbine, and means for determining an amount of ice shed from the blades of the ACM turbine. In some embodiments, the means and apparatus may also involve predicting ACM wear, based at least in part on the predicted ice formation and shedding.

Method for predicting air cycle machine turbine ice formation and shedding and journal bearing wear

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Redondo Beach, CA, United States of America

Jon E Schryver