scholarly journals El Paso Uprates Two Gas Turbines

1962 ◽  
Author(s):  
J. I. Uhr ◽  
B. J. Matthews
Keyword(s):  
Feasibility Study ◽  
Gas Turbines ◽  
El Paso ◽  
Operating Experience ◽  
General Electric ◽  
Continuous Progress ◽  
Turbine Design ◽  
Made In

El Paso discusses the philosophy of uprating older gas turbines by taking advantage of the continuous progress being made in turbine design. This paper describes El Paso’s uprating of two General Electric gas turbines and includes the feasibility study, modificaton required and operating experience.

Robust Gas Turbine Design

2002 ◽  
Author(s):  
Bernard Becker
Keyword(s):  
Gas Turbines ◽  
High Reliability ◽  
Operating Experience ◽  
Turbine Rotor ◽  
Operational Reliability ◽  
Design Features ◽  
Industry Standard ◽  
Industrial Gas Turbines ◽  
Turbine Design ◽  
Very High

Industrial gas turbines utilize numerous design features that cannot be implemented in jet aircraft turbines for weight reasons, but because of their straight-forward and robust nature trim costs and reduce both maintenance effort and operating risks. Regardless of manufacturer, the following design features, for example, have become the established industry standard: • single-shaft rotor; • 2 bearings at atmospheric pressure; • Journal bearing instead of ball bearings; • steel blading in the compressor. For the key components compressor, turbine, rotor, and combustion chamber of its 3A family (Fig. 1), Siemens has developed and tested additional features that reduce wear further and improve operational reliability. Operating experience gathered to date has shown that these features enable achievements of very high reliability and availability. Some of the measures described also contribute to enhanced output and efficiency.

Modification of a General Electric 7001B Turbine for Increased Reliability by Using 7001E Parts

1990 ◽  
Author(s):  
David K. Prugger ◽  
William J. McDermott
Keyword(s):  
Gas Turbines ◽  
Operating Experience ◽  
Significant Part ◽  
General Electric ◽  
Service Engineering ◽  
Field Service ◽  
Initial Application ◽  
Component Design

Parts of the latest design, incorporating improvements developed over 19 years of operating experience, can be utilized on the Model 7001B gas turbines. This paper describes the initial application of the 7001E technology to an entire turbine retrofit. Component design improvements, interfaces, and limitations are described as well as expected reliability improvements. Emphasis will be given to Field Service Engineering experience in installing this first change, since labor can be a significant part of the conversion.

scholarly journals Operating Experience of the General Electric LM2500 Gas Turbines in Navy Ships: Second Report

1980 ◽  
Author(s):  
R. E. Reid ◽  
V. P. Klemm
Keyword(s):  
Gas Turbines ◽  
Wide Spectrum ◽  
Operating Experience ◽  
Operational Experience ◽  
General Electric ◽  
Improvement Program ◽  
Asme Paper

LM2500 Engines have been in operation in U.S. Navy ships since September, 1975. This is an update of a previous ASME paper given in March, 1977, which presented the operational experience of the LM2500 to that time. Included in this paper will be the reliability achieved thus far plus the improvements that are projected from the ongoing component improvement program. The application of the engine to a wide spectrum of ships in 11 foreign navies is also covered.

Increased Life for Gas Turbine Combustion Systems Burning Residual Fuel

1956 ◽  
Author(s):  
R. W. MaCaulay ◽  
C. M. Gardiner
Keyword(s):  
Gas Turbine ◽  
Test Data ◽  
Gas Turbines ◽  
Field Experience ◽  
Operating Experience ◽  
Considerable Improvement ◽  
General Electric ◽  
Fuel Nozzle ◽  
New Type ◽  
Asme Paper

ASME Paper 48-A-109 described combustion liners and fuel nozzles which were originally used in General Electric gas turbines. Operating experience has shown certain shortcomings of these, particularly in regard to liner life and frequency of changing required by the fuel nozzles. This paper describes a new type of liner and fuel nozzle which, on the basis of limited field experience, have shown considerable improvement in these respects. It also gives a brief review of test data and operating experience on combustion liners and fuel nozzles.

scholarly journals Operating Experience of General Electric Gas Turbines

1958 ◽  
Author(s):  
H. D. McLean
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Operating Experience ◽  
Basic Design ◽  
General Electric ◽  
General Electric Company ◽  
Electric Company ◽  
Future Activity ◽  
Maintenance Requirements ◽  
Use Factors

A review is made of all General Electric Company Gas Turbines installed and operated previous to January 1, 1958. The gas turbines are reviewed with respect to application, fuels burned, fired hours, and miscellaneous features. Each different basic design is briefly described, with date of first operation and total number installed given. Gas turbine failures that have occurred in operation are discussed. Availability, reliability, and use factors are given. A brief review of published articles by gas turbine owners and operators is made. Problems that have occurred in eight and one-half years of operation are discussed, and solutions are given. Maintenance requirements and life of gas-path parts are discussed. A brief description of future activity, new basic designs, new features, and new installations is included.

scholarly journals Feasibility of a Helium Closed-Cycle Gas Turbine for UAV Propulsion

2020 ◽  
Vol 11 (1) ◽  
pp. 28
Author(s):  
Emmanuel O. Osigwe ◽  
Arnold Gad-Briggs ◽  
Theoklis Nikolaidis
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Pressure Ratio ◽  
Low Noise ◽  
Closed Cycle ◽  
Propulsion Systems ◽  
Component Design ◽  
Readiness Level ◽  
Aerial Vehicle ◽  
Turbine Design

When selecting a design for an unmanned aerial vehicle, the choice of the propulsion system is vital in terms of mission requirements, sustainability, usability, noise, controllability, reliability and technology readiness level (TRL). This study analyses the various propulsion systems used in unmanned aerial vehicles (UAVs), paying particular focus on the closed-cycle propulsion systems. The study also investigates the feasibility of using helium closed-cycle gas turbines for UAV propulsion, highlighting the merits and demerits of helium closed-cycle gas turbines. Some of the advantages mentioned include high payload, low noise and high altitude mission ability; while the major drawbacks include a heat sink, nuclear hazard radiation and the shield weight. A preliminary assessment of the cycle showed that a pressure ratio of 4, turbine entry temperature (TET) of 800 °C and mass flow of 50 kg/s could be used to achieve a lightweight helium closed-cycle gas turbine design for UAV mission considering component design constraints.

scholarly journals Implantable Thin Film Devices as Brain-Computer Interfaces: Recent Advances in Design and Fabrication Approaches

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 204
Author(s):  
Yuhao Zhou ◽  
Bowen Ji ◽  
Minghao Wang ◽  
Kai Zhang ◽  
Shuaiqi Huangfu ◽  
...  
Keyword(s):  
Thin Film ◽  
High Resolution ◽  
Future Research ◽  
Nano Fabrication ◽  
Computer Interfaces ◽  
Continuous Progress ◽  
Open Mesh ◽  
Remarkable Progress ◽  
Thin Film Devices ◽  
Made In

Remarkable progress has been made in the high resolution, biocompatibility, durability and stretchability for the implantable brain-computer interface (BCI) in the last decades. Due to the inevitable damage of brain tissue caused by traditional rigid devices, the thin film devices are developing rapidly and attracting considerable attention, with continuous progress in flexible materials and non-silicon micro/nano fabrication methods. Therefore, it is necessary to systematically summarize the recent development of implantable thin film devices for acquiring brain information. This brief review subdivides the flexible thin film devices into the following four categories: planar, open-mesh, probe, and micro-wire layouts. In addition, an overview of the fabrication approaches is also presented. Traditional lithography and state-of-the-art processing methods are discussed for the key issue of high-resolution. Special substrates and interconnects are also highlighted with varied materials and fabrication routines. In conclusion, a discussion of the remaining obstacles and directions for future research is provided.

scholarly journals Breaking the Barriers

2012 ◽  
Vol 134 (05) ◽  
pp. 32-37
Author(s):  
Lee S. Langston
Keyword(s):  
Fluid Mechanics ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Solid Mechanics ◽  
Commercial Aircraft ◽  
Commercial Aviation ◽  
New Developments ◽  
Exhaust Heat ◽  
Turbine Component ◽  
Made In

This article explores the new developments in the field of gas turbines and the recent progress that has been made in the industry. The gas turbine industry has had its ups and downs over the past 20 years, but the production of engines for commercial aircraft has become the source for most of its growth of late. Pratt & Whitney’s recent introduction of its new geared turbofan engine is an example of the primacy of engine technology in aviation. Many advances in commercial aviation gas turbine technology are first developed under military contracts, since jet fighters push their engines to the limit. Distributed generation and cogeneration, where the exhaust heat is used directly, are other frontiers for gas turbines. Work in fluid mechanics, heat transfer, and solid mechanics has led to continued advances in compressor and turbine component performance and life. In addition, gas turbine combustion is constantly being improved through chemical and fluid mechanics research.

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