Alliedsignal Inc.

Stanley C Pollitt

Frank A Bescoby

David M Kotchick

Michel A Jonqueres

Peter C Collins

Roger R Sanger

Ronald E Crabtree

Thomas J Kazan

An environmental control system includes a single heat exchanger, a single water separator and two air cycle machines on separate spools. Cooling turbines of the air cycle machines are cascaded. Air flows through both air cycle machines during normal operation of the environmental control system. If one of the air cycle machines fails, air can be bypassed around the failed air cycle machine. Cascading allows water separation to be performed by a mid-pressure water separator located between the air cycle machines.

Single package cascaded turbine environmental control system

A turbomachine having a unitary ceramic rotating assembly mounted within a split housing. The rotating assembly includes at least a turbine and integral shaft, the shaft providing a cooled bearing support surface for a fluid film foil bearing.

Turbomachine having a unitary ceramic rotating assembly

A ceramic shaft machinery element having an incorporated cooled bearing runner surface providing superior support for the ceramic shaft.

Ceramic air bearing shaft

Growing community of inventors

Rancho Palos Verdes, CA, United States of America

Stanley C Pollitt