DR. JOHN MICHAEL TAYLOR, MD
Neurology in Cincinnati, OH

5140809, Aug 25, 1992

Feb 12, 1990

7/479503

John B. Taylor - Cincinnati OH

General Electric Company - Cincinnati OH

F02K 100

60204

A method and apparatus are disclosed for spoiling thrust from combustion gases discharged from an aircraft gas turbine engine at ground idle operating condition. The method comprises the step of positioning a secondary exhaust flap of the exhaust nozzle to form a diffuser for the combustion gases at the ground idle operating condition for maintaining attachment of the combustion gases along the secondary exhaust flaps for spoiling thrust. An exemplary and preferred exhaust nozzle is provided wherein the secondary exhaust flaps are positionable in part independently of primary exhaust flaps so that the primary and secondary flaps may be disposed together in different positions during ground idle, dry, and augmented operating conditions of the engine. Thrust spoiling allows the engine to be operated at relatively high core speeds for providing bleed-air at relatively high pressure or electrical power from a generator, or both, without attendant relatively high thrust from the engine at the ground idle operating condition.

5235808, Aug 17, 1993

Apr 9, 1992

7/865529

John B. Taylor - Cincinnati OH

General Electric Company - Cincinnati OH

F02K 100

60271

A method and apparatus are disclosed for spoiling thrust from combustion gases discharged from an aircraft gas turbine engine at ground idle operating condition. The method comprises the step of positioning a secondary exhaust flap of the exhaust nozzle to form a diffuser for the combustion gases at the ground idle operating condition for maintaining attachment of the combustion gases along the secondary exhaust flaps for spoiling thrust. An exemplary and preferred exhaust nozzle is provided wherein the secondary exhaust flaps are positionable in part independently of primary exhaust flaps so that the primary and secondary flaps may be disposed together in different positions during ground idle, dry, and augmented operating conditions of the engine. Thrust spoiling allows the engine to be operated at relatively high core speeds for providing bleed-air at relatively high pressure or electrical power from a generator, or both, without attendant relatively high thrust from the engine at the ground idle operating condition.

5351888, Oct 4, 1994

May 14, 1993

8/061398

John B. Taylor - Cincinnati OH
Dudley O. Nash - Cincinnati OH

General Electric Company - Cincinnati OH

B64D 3308, B05B 112

2391273

A convergent-divergent exhaust nozzle is mounted to an exhaust duct of a jet aircraft engine by a circumferentially-spaced set of hydraulic cylinders. The cylinders are interconnected in captured flow via hydraulic circuits which allow the cylinders to function as a gimbal mounting. This mounting allows the entire nozzle to vector the exhaust without additionally loading the divergent flaps with vectored exhaust so that cool, low pressure ram air can be channeled directly to the divergent flaps for efficient cooling.

5435127, Jul 25, 1995

Nov 15, 1993

8/151669

Ronald J. Luffy - Maineville OH
John B. Taylor - Cincinnati OH
William V. Sutherland - Milford OH
Frederick J. Stine - Mainville OH
James A. Crowley - Midlothian VA
David E. Mann - West Chester OH
William Steyer - Topsfield MA

General Electric Company - Cincinnati OH

F02K 136

60204

An ejecting exhaust nozzle in a gas turbine engine includes a convergent section, a divergent section, extending downstream from the convergent section, and an ejector for ejecting an airflow into the core airflow is fed by a boost pump. The boost pump includes a flow mixer with a boost plane wherein a fan airflow is injected into a ram airflow and then mixed in a mixing section extending downstream from the boost plane. Varying the fan airflow to boost the ram airflow to control a boosted ram airflow pressure allows ejector operation throughout the flight envelope of the gas turbine engine.