US 7,464,533 B2
Apparatus for operating gas turbine engines
Gary C. Wollenweber, Cincinnati, Ohio (US)
Assigned to General Electric Company, Schenectady, N.Y. (US)
Filed on Jun. 02, 2005, as Appl. No. 11/143,246.
Application 11/143246 is a continuation in part of application No. 10/352446, filed on Jan. 28, 2003, granted, now 6,968,674.
Prior Publication US 2008/0245050 A1, Oct. 09, 2008
Int. Cl. F02C 6/00 (2006.01)
U.S. Cl. 60—39.15  [60/224; 60/785] 13 Claims
OG exemplary drawing
 
1. A gas turbine engine assembly comprising:
at least one propelling gas turbine engine comprising a fan, a core engine downstream from the fan, and a plurality of extraction points;
a modulating valve coupled in flow communication to said at least one propelling gas turbine engine; and
an auxiliary engine used for generating electrical power, said auxiliary engine comprising at least one turbine and an inlet, said inlet coupled in flow communication with said modulating valve, such that a portion of airflow entering said at least one propelling engine is extracted for use by said auxiliary engine and such that said modulating valve controls the flow of airflow from said at least one propelling engine to said auxiliary engine, said modulating valve is selectively operable to extract and mix airflow from at least two of said plurality of extraction points.