Smart Lube Systems for Gas Turbine Engines

2012 ◽  
Author(s):  
Thomas B. Kenney
Keyword(s):  
Gas Turbine ◽  
Cost Reduction ◽  
Operating Cost ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Oil Consumption ◽  
Pump System ◽  
Power Generator ◽  
Maintenance Activities ◽  
The Cost

Presently, the typical gas turbine based power generator relies on a large, expensive skid system to provide lubrication to the bearings. These skids consist of a large number of expensive components, many of which require maintenance that drives operating cost and creates environmental hazards. A smart lube system based on recently developed technology enables dramatic simplification and cost reduction of the skid system and significantly reduces oil consumption along with the frequency and cost of maintenance. Such a system would take advantage of the availability of advanced pump system controls and fluid nozzle technology to drastically reduce the quantity of oil required, and the resultant heat rejection. As a result, the sizes of reservoir, cooler, filter and piping are greatly reduced. The cost of components, support equipment and maintenance activities will also be reduced to a fraction of their present values.

Latest Gas Turbine Repair Techniques Using Laser Technology

1998 ◽  
Author(s):  
A.D. Williams ◽  
J.L. Humphries
Keyword(s):  
Gas Turbine ◽  
Repair Process ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Directionally Solidified ◽  
Laser Technology ◽  
Higher Power ◽  
Recent Developments ◽  
The Cost ◽  
Repair Techniques

Abstract Over recent years, with the drive for new higher power, higher efficiency Gas Turbine engines, manufacturers have had to look at new alloys and new coating techniques to achieve and support the industry requirements. Repair technology has therefore had to keep pace with the OEM advances and much research and development has been undertaken in developing new repair processes. Many of the alloys now used are directionally solidified or single crystal, which until now have been deemed irreparable by traditional welding techniques. Recent developments in the use of lasers have not only rendered these alloys salvageable but have also reduced the overall repair time and therefore the cost. This paper looks at the use of laser technology as a repair process for gas turbine components, touching briefly on laser cutting and drilling but concentrating mainly on laser powder feed welding and its applications.

Development of a Retracting Vane/Centrifugal Main Fuel Pump for Gas Turbine Engines

1976 ◽  
Vol 98 (4) ◽  
pp. 619-625
Author(s):  
K. H. Pech ◽  
N. L. Downing
Keyword(s):  
Gas Turbine ◽  
Centrifugal Pump ◽  
High Performance ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Functional Requirements ◽  
Fuel Pump ◽  
Cost Weight ◽  
Performance Requirements ◽  
The Cost

Fuel pumps and metering systems are becoming more complex and expensive to meet the high performance requirements of advanced gas turbine engines. A simple, inlet throttled, centrifugal pump integrated with a retracting vane starting element provides the potential for a reliable, high performance design capable of reducing the cost, weight, and temperature rise of the fuel system. This paper presents the results of recent efforts to develop the retracting vane element and to integrate it with a vapor core centrifugal pump in order to meet the fuel performance and functional requirements of an advanced gas turbine main fuel pump.

scholarly journals Application of the vacuum casting technology in the production of small-size gas turbine engine blade machines

2021 ◽  
Vol 20 (3) ◽  
pp. 152-159
Author(s):  
A. M. Faramazyan ◽  
S. S. Remchukov ◽  
I. V. Demidyuk
Keyword(s):  
Gas Turbine ◽  
Centrifugal Compressor ◽  
Gas Turbine Engine ◽  
Shrinkage Porosity ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Vacuum Casting ◽  
Turbine Engine ◽  
Design Values ◽  
The Cost

The application of casting technologies in the production of parts and assemblies of small-size gas turbine engines is justified in the paper. The technology of vacuum casting in gypsum molds was tested during the production of an experimental centrifugal compressor of a small-size gas turbine engine. On the basis of a 3D model of the designed centrifugal compressor, computational studies of vacuum casting were carried out and rational parameters of the technological process were determined. Prototypes of the developed centrifugal compressor of a small-size gas turbine engine were made. The results of calculations and the performed technological experiment confirmed the fill rate of the gating form and the absence of short pour. The distribution of shrinkage porosity and cavities corresponds to the design values and is concentrated in the central part of the casting that is subjected to subsequent machining. The area of the blades, disc and sleeve is formed without defects. The use of casting technologies in the production of parts and assemblies of small-size gas turbine engines assures the required quality with a comparatively low price of the finished product, making it possible to achieve the balance between the cost of the technology and the quality of the product made according to this technology.

scholarly journals The Contribution of Metallic and Ceramic Coatings to Gas Turbine Engines

1968 ◽  
Author(s):  
R. E. Barnhart
Keyword(s):  
Gas Turbine ◽  
High Performance ◽  
Cost Savings ◽  
Ceramic Coatings ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Design Engineers ◽  
Detonation Gun ◽  
Effective Use ◽  
The Cost

Metallic and ceramic coatings enhance the quality of today’s gas turbine engines by enabling them to run longer and by increasing their reliability and efficiency of operation. Coatings give design engineers more latitude in their choice of materials for high-performance applications. Discussed here are the characteristics of coatings produced by three different means: detonation-gun process, plasma process, and diffusion process. By considering the following three parameters: (a) the nature of wear and corrosion problems in gas turbine engines, (b) the results of coated components in commercial service, and (c) the cost savings attributable to coatings, we can develop guidelines for even more effective use of coatings in the future.

Closed Gas Turbine Engines for Future Marine Propulsion

1976 ◽  
Vol 13 (03) ◽  
pp. 309-314
Author(s):  
F. Critelli ◽  
A. Pietsch ◽  
N. Spicer
Keyword(s):  
Gas Turbine ◽  
New Technology ◽  
Operating Cost ◽  
Advanced Technology ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Closed Cycle ◽  
Turbine Engine ◽  
Excellent Opportunity ◽  
Marine Propulsion

The Maritime Administration, in its pursuit of improved economics and advanced technology, initiated a study which would evaluate new marine powerplants. It became quite apparent for several sound technical reasons that the closed-cycle gas turbine engine afforded an excellent opportunity for achievement of Mar-Ad's goal. This paper addresses the new-technology engine as applied to maritime ships, illustrating the advantages to shipowners and operators. Efficiency, multifuel capability, installation flexibility, reduction in ship's manning, as well as the overall reduced operating cost are highlighted in this paper.

scholarly journals Thermodynamic designing of the small-scale gas turbine engine family with common core

2018 ◽  
Vol 220 ◽  
pp. 03007
Author(s):  
Andrey Tkachenko ◽  
Evgeny Filinovaroslav Ostapyuk ◽  
Viktor Rybakov ◽  
Daria Kolmakova
Keyword(s):  
Gas Turbine ◽  
Common Core ◽  
Turbine Engines ◽  
Small Scale ◽  
Gas Turbine Engines ◽  
Working Process ◽  
Turbofan Engine ◽  
Engine Family ◽  
Power Turbine ◽  
The Cost

The paper describes the method of selecting the working process parameters of a family of small-scale gas turbine engines (GTE) with common core. As an example, the thermodynamic design of a family of small-scale gas turbine engines (SGTE) with common core was carried out. The engine family includes a small-scale turbojet engine (STJE) and a gas turbine plant (GTP), which electric generator is driven by power turbine. The selection of rational values for the working process parameters of STJE and GTP was carried out in CAE system ASTRA on the basis of nonlinear optimization of these parameters, taking into account functional and parametric constraints. The quantitative results of deterioration in the performance of the engines of the family with common core are obtained in comparison with the engines with the optimum core for each type. However, the advanced creation of a common core can reduce the cost and timing of the engine creation, ensure its higher reliability (due to the development of the base common core) and reduce the cost of its production. The method of selecting the parameters of the working process of the GTE family with common core presents the solution to more complex problems, such as the possibility of developing a family consisting of five engines: a turbojet engine, turbofan engine, turbofan engine with a complex cycle, GTE with power turbine (GTE-PT), GTE-PT with recovery.

Micro Jet Engine Oil Consumption Measurement Technique

2009 ◽  
Author(s):  
Ivo Sandor ◽  
Stephan Staudacher ◽  
Gernot Hertweck
Keyword(s):  
Gas Turbine ◽  
Engine Oil ◽  
Turbine Engines ◽  
Emission Measurement ◽  
Gas Turbine Engines ◽  
Oil Consumption ◽  
Jet Engine ◽  
Micro Gas Turbine ◽  
Tracer Techniques ◽  
Technical Advances

Oil consumption of micro gas turbine engines plays a significant role with regards to their practical application in aerospace. In this context an oil consumption measurement device has been developed on behalf of Daimler AG for the application to vehicle turbo chargers. This device has been used to measure the oil consumption of an own design micro jet engine of 400 N thrust. The design of the device is based on the principle of gravimetric weighting. In the past, volumetric principles have been applied to engine oil consumption measurements. Technical advances in the field of piezoelectricity have improved the accuracy of gravimetric weighting in such a way that today its accuracy is comparable to volumetric gauging. Moreover, unlike volumetric gauging gravimetric weighting is not influenced by the density or the amount of emulsified gas in the oil. Hence, application of gravimetric weighting represents a more robust and more efficient way to evaluate oil consumption in micro gas turbine engines. Unlike non-conventional measurement strategies like emission measurement and tracer techniques, gravimetric weighting allows very simple and convenient oil consumption measurements [3]. The device was validated using defined laboratory measurements. Experimental results are shown.

Gas Screen in Components of Gas Turbine Engines

1997 ◽  
Vol 28 (7-8) ◽  
pp. 536-542
Author(s):  
A. A. Khalatov ◽  
I. S. Varganov
Keyword(s):  
Gas Turbine ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Gas Screen
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