Gas turbine engine exhaust nozzle having a noise attenuation device driven by shape memory material actuators

2010 ◽  
Vol 128 (5) ◽  
pp. 3270
Author(s):  
Nigel T. Birch ◽  
John R. Webster
Keyword(s):  
Shape Memory ◽  
Gas Turbine ◽  
Gas Turbine Engine ◽  
Noise Attenuation ◽  
Shape Memory Material ◽  
Engine Exhaust ◽  
Turbine Engine ◽  
Memory Material

Characterization of a Counterflow Thrust Vectoring Scheme on a Gas Turbine Engine Exhaust Jet

2006 ◽  
Author(s):  
Delfim Dores ◽  
Maria Madruga Santos ◽  
Anjaneyulu Krothapalli ◽  
Luiz Lourenco ◽  
Emmanuel Collins ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Gas Turbine Engine ◽  
Engine Exhaust ◽  
Thrust Vectoring ◽  
Turbine Engine ◽  
Exhaust Jet

Nonintrusive Gas-Turbine Engine-Exhaust Characterization Using Acoustic Measurements

2018 ◽  
Vol 34 (3) ◽  
pp. 730-738 ◽  
Author(s):  
Raul Otero ◽  
K. Todd Lowe ◽  
Wing F. Ng ◽  
Lin Ma ◽  
Chu-Young Kim
Keyword(s):  
Gas Turbine ◽  
Gas Turbine Engine ◽  
Acoustic Measurements ◽  
Engine Exhaust ◽  
Turbine Engine

scholarly journals Development of the WR-21 Gas Turbine Recuperator

1999 ◽  
Author(s):  
Robert C. Sanders ◽  
George C. Louie
Keyword(s):  
Gas Turbine ◽  
Failure Modes ◽  
Waste Heat ◽  
Operating Experience ◽  
Gas Turbine Engine ◽  
Analytical Models ◽  
Royal Navy ◽  
Engine Exhaust ◽  
Turbine Engine ◽  
Technical Requirements

WR-21 is an intercooled and recuperated (ICR) gas turbine engine being developed by the U. S. Navy (USN) with contributions from the Royal Navy and the French Navy. A key component of the WR-21 engine is the recuperator used to recover waste heat from engine exhaust gas. The recuperator is being designed and fabricated by AlliedSignal Aerospace Company under subcontract to Northrop Grumman Marine Services, the prime contractor for the WR-21 gas turbine engine. One of the most challenging developmental items for the WR-21 engine has proven to be the recuperator. This paper discusses the development of the recuperator, including the advanced development (AD) recuperator which failed after a few hours of operation, the limited operating unit (LOU) recuperator which has supported much of the WR-21 engine development testing and the engineering development model (EDM) recuperator which will be used for a 3000 hour engine endurance test. Included is an overview of USN technical requirements for the recuperator and a review of operating experience with the AD and LOU recuperators. Failure modes that have been experienced are discussed in detail, including root cause evaluations and design modifications. Steps taken to extend the life of the LOU recuperator are discussed. In addition, testing (both single core and full size recuperator) and analytical models that have been used to improve the design and reliability of the recuperator are addressed.

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