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Publication Title | United States PatentApplicationPublication (10)Pub.N0.:US2002/0148227A1

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Text | United States PatentApplicationPublication (10)Pub.N0.:US2002/0148227A1 | 001



US 20020148227A1

(19)United States

(12)PatentApplicationPublication (10)Pub.No.:US2002/0148227A1

Mackay

(54) MULTI PRESSURE MODE GAS TURBINE

(76) Inventor: Robin Mackay, Rancho Palos Verdes, CA(US)

CorrespondenceAddress: Albert J. Miller

24441 Hillshore Drive Westport, CA 95488 (US)

(21) APPLNO: 09/935207 ’

(43) Pub. Date: Oct. 17, 2002

PublicationClassi?cation

(22) Filed;

Aug 21,2001 Related US, Application Data

(57) ABSTRACT

A gasturbineWhichiscapableofoperatinginmorethanone pressure mode. The gas turbine, Which may include a single ?xed spool, multiple ?xed spools, or a combination of ?xed spool(s) and a free turbine, can operate in a positive pressure mode, a transatmospheric mode, or a subatmospheric mode. Valving is provided to control the particular pressure mode ofoperationinresponsetosystemrequirementsandto sWitch betWeen pressure modes as required.

(60) ProvisionalapplicationNo.60/268,387,?ledonFeb. 13, 2001.

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(52) US. Cl. ..60/772; 60/39.511

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Image | United States PatentApplicationPublication (10)Pub.N0.:US2002/0148227A1



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