Design, Development and Qualification Testing of the U.S. Navy NES-21A Parachute Assembly

1974 ◽  
Author(s):  
Jon T. Matsuo
Keyword(s):  
Design Development ◽  
Qualification Testing ◽  
The U.S

1000 Hour Qualification Test of the Textron Lycoming TF40B Marine Gas Turbine Engine for the U.S. Navy LCAC Craft

1988 ◽  
Author(s):  
Michael J. Zoccoli
Keyword(s):  
Gas Turbine ◽  
High Power ◽  
Duty Cycle ◽  
Development Program ◽  
Continuous Operation ◽  
Qualification Test ◽  
Turbine Engine ◽  
Qualification Testing ◽  
Carbon Erosion ◽  
The U.S

This paper describes the qualification testing of the TF40B marine gas turbine in accordance with the duty cycle as specified in MIL-E-17341C, but with modifications that reflect the specific engine application to the U.S. Navy LCAC vehicle. Among the particular requirements of the 1000 hour test are continuous operation in a salt-laden environment of given concentration and humidity, and frequent shutdowns from relatively high power with an ensuing soakback interval. The narrative discusses the method of test, the duty cycle, and the results which were obtained. In an epilogue which focuses on posttest activities, a description is given of the corrective actions taken to resolve certain problems that arose during the course of the test. One such problem, namely the occurrence of carbon erosion upon certain hot section components, was eliminated by modification to the combustor, in a very successful posttest test development program.

Managing Study Abroad During a Global Pandemic

2022 ◽  
pp. 409-433
Author(s):  
Victoria Russell
Keyword(s):  
Instructional Design ◽  
Service Learning ◽  
Study Abroad ◽  
Field Experiences ◽  
Communicative Language Teaching ◽  
Online Course ◽  
Design Development ◽  
Global Pandemic ◽  
Study Abroad Program ◽  
The U.S

Described in this chapter is an innovative online course that was created to support Spanish language students whose study abroad program was cancelled during the summer of 2020 due to the pandemic. While many students were able to enroll quickly in summer online language course offerings at their home campus to substitute for their study abroad coursework, students who were scheduled to complete field experiences in Spain as part of their certificate in Spanish for Professionals were unable to do so. In response to this problem, the author created an online professional practicum course to substitute for students' service-learning course in Spain. The design, development, and delivery of the online course, which featured a virtual language exchange between students in the U.S. and Spain, is the focus of the present chapter. Also described in this chapter is the conceptual framework that underpins sound instructional design for online communicative language teaching.

F110-GE-132: Enhanced Power Through Low-Risk Derivative Technology

2000 ◽  
Vol 123 (3) ◽  
pp. 544-551 ◽  
Author(s):  
A. R. Wadia ◽  
F. D. James
Keyword(s):  
Power Management ◽  
High Efficiency ◽  
Model Development ◽  
Low Risk ◽  
Historical Background ◽  
Test Results ◽  
Design Development ◽  
Engine Model ◽  
Risk Approach ◽  
Qualification Testing

The F110-GE-132, originally referred to as the F110-GE-129 EFE (Enhanced Fighter Engine), presently undergoing qualification testing, is being offered at two different thrust/inspection levels with a maximum augmented thrust of 34,000 pounds. The EFE has been developed using low-risk derivative engine technology. It features a new increased airflow, high efficiency, three-stage long chord blisk fan, and an advanced radial augmentor that reduces complexity, improves maintainability, and provides increased parts life. The paper first provides a historical background of the F110 engines to relate the heritage of the F110-GE-132. The F110 engine model development roadmap is shown to illustrate the incremental low-risk approach used to provide thrust growth with improved product reliability. A detailed description of the unique power management features of the EFE engine to meet individual customer thrust and life requirements is outlined. The long chord blisk fan design, development, and test results are presented, followed by a description of the radial augmentor and the exhaust nozzle. The EFE engine has successfully completed sea level static and altitude development testing and fan aero mechanical qualification at the AEDC in Tullahoma, Tennessee.

F110-GE-129 EFE — Enhanced Power Through Low Risk Derivative Technology

2000 ◽  
Author(s):  
A. R. Wadia ◽  
F. D. James
Keyword(s):  
Power Management ◽  
High Efficiency ◽  
Model Development ◽  
Low Risk ◽  
Historical Background ◽  
Test Results ◽  
Design Development ◽  
Engine Model ◽  
Risk Approach ◽  
Qualification Testing

The F110-GE-129 EFE (Enhanced Fighter Engine), presently undergoing qualification testing, is being offered at two different thrust/inspection levels with a maximum augmented thrust of 34,000 pounds. The EFE has been developed using low risk derivative engine technology. It features a new increased airflow, high efficiency, three-stage long chord blisk fan and an advanced radial augmentor that reduces complexity, improves maintainability and provides increased parts life. The paper first provides a historical background of the F110 engines to relate the heritage of the F110-GE-129 EFE. The F110 engine model development roadmap is shown to illustrate the incremental low risk approach used to provide thrust growth with improved product reliability. A detailed description of the unique power management features of the EFE engine to meet individual customer thrust and life requirements is outlined. The long chord blisk fan design, development and test results are presented followed by a description of the radial augmentor and the exhaust nozzle. The EFE engine has successfully completed sea level static and altitude development testing and fan aero mechanical qualification at the AEDC in Tullahoma, Tennessee.

U.S. Navy Refinement of Electronic Fuel Controls and Air Assist Fuel Nozzles to Meet Upgraded Power Requirements for the 501-K34 Marine Gas Turbines

2004 ◽  
Author(s):  
Matthew G. Hoffman ◽  
Brian J. Connery ◽  
Helen J. Kozuhowski ◽  
Iva´n Pin˜eiro
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Transient Response ◽  
Gas Turbines ◽  
Test Results ◽  
Turbine Generators ◽  
Fuel Nozzle ◽  
New Type ◽  
Qualification Testing ◽  
The U.S

The U.S. Navy operates Rolls Royce 501-K34 powered Gas Turbine Generators (GTGs) on DDG 51 Class destroyers. The design of these GTGs has evolved significantly over the course of the shipbuilding program. One significant change is that GTGs on DDG 51 to 90 are rated to provide 2,500 KW while those on DDG 91 and follow are rated at 3,000 KW. The 3,000 KW rating has been accepted by the Navy and demonstrated on several new GTGs during qualification testing. However, test results indicate that one area where very little performance margin exists is full load transient response. This paper discusses extensive transient testing performed on a DDG 51 Class GTG at the U.S. Navy’s Land Based Engineering Site (LBES) in Philadelphia, Pennsylvania. It details control system modifications that optimize performance and explores changes to GTG transient response that result from operation with a new type of 501-K34 fuel nozzle.

The U.S. Navy’s Design, Development and Implementation Program for Gas Turbine Generator Sets

1992 ◽  
Author(s):  
John J. McGroarty
Keyword(s):  
Gas Turbine ◽  
Design Development ◽  
Timely Manner ◽  
Turbine Generator ◽  
Implementation Program ◽  
Engineering Problems ◽  
Problems And Solutions ◽  
Drawing Board ◽  
Generator Sets ◽  
The U.S

The Design Development and Implementation Program (DDIP) evolved as a result of an organized progression of In-Service Engineering (ISE) responsibilities required to implement improvements to Gas Turbine Generator Sets (GTGS) in the U.S. Navy. The DDIP was established to bring a design concept, whether it be to correct a problem or to make a design improvement, from the drawing board through testing and development to the implementation of a Technical Directive as quickly as possible. Presently all engineering improvements on U.S. Navy Gas Turbine Generator Sets are implemented through the DDIP. Providing this central point of engineering has helped the Naval Sea Systems Command implement improvements in a well tested and timely manner. This paper describes the sequential processes in the DDIP methodology and further discusses specific engineering problems and solutions using the DDIP process.

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