Paper 12: Gas Turbine Fuel and Control Systems

1968 ◽  
Vol 183 (14) ◽  
pp. 121-127 ◽  
Author(s):  
E. H. Warne
Keyword(s):  
Control Systems ◽  
Gas Turbine ◽  
High Speed ◽  
Type Systems ◽  
Point Of View ◽  
Turbine Engines ◽  
Advantages And Disadvantages ◽  
Aircraft Type ◽  
Main Engine ◽  
And Control

Following a preliminary introduction on the necessity for fuel and control systems, it is proposed to deal in some detail with the requirements of modern gas turbine engines from the point of view of both pumping of fuel and the control. In general the paper deals with aircraft type systems. Over the last 20 years specifications have been increasing in size and the need for the additional requirements will be discussed in relation to the various types of engines. Considerations of control for two- and three-shaft engines for both civil (subsonic and supersonic) and military use are covered, as also are the somewhat different requirements for helicopters. In addition to main engine control, the effects of reheat, supersonic nozzles and variable engine geometry will be discussed. Reference is also made to the increasing severity of environment on high speed aircraft. Following this, the problems of pumping are considered and a review of the types of pumps available is made comparing their relative advantages and disadvantages in relation to the application, and indicating the general trends in this field. On control systems the types of control available will be discussed including hydromechanical, electric and fluidic, and the basis on which the optimum choice can be made for any particular engine will be dealt with. The requirements for control, both for steady running and limiting will be explained, and once again a typical example of a control system is briefly described.

MULTIPARAMETRIC DIAGNOSTICS OF GAS TURBINE ENGINES

2021 ◽  
Vol 156 (A2) ◽  
Author(s):  
J Sinay ◽  
A Tompos ◽  
M Puskar ◽  
V Petkova
Keyword(s):  
Gas Turbine ◽  
High Speed ◽  
Technical Condition ◽  
Diagnostic Methods ◽  
Turbine Engines ◽  
Technical Diagnostics ◽  
Suitable Model ◽  
Gas Turbine Engines ◽  
Advantages And Disadvantages ◽  
The Matrix

This article addresses the issue of diagnostics and maintenance of Gas Turbine Engines which are located in high Speed Ferries, Cruisers, Frigates, Corvettes, etc. Assurance of reliable operation can be performed only by using correct diagnostic methods and procedures of monitoring the condition of the devices and by selecting the correct strategy of maintenance. The issue of monitoring the technical condition of Gas Turbine Engines is treated through multiparametric methods of technical diagnostics incorporated into predictive maintenance, which is a part of proactive maintenance. There are methods of vibrodiagnostics, thermography, tribology, borescopy and emissions measurement. Each of these methods has lots of advantages and disadvantages; therefore it is very important to ensure their correct combination for trouble-free operation of those important facilities. Their suitability at work is discussed in the matrix of diagnostic methods application and the PF chart. The output of the work is a proposal of a suitable model of maintenance control which uses multiparametric diagnostic methods for small and big Gas Turbine Engines and optimizes maintenance costs.

scholarly journals ПРОГНОЗУВАННЯ МІЖЕЛЕМЕНТНОЇ ВЗАЄМОДІЇ В СИСТЕМАХ АВТОМАТИЧНОГО КЕРУВАННЯ АВІАЦІЙНИХ ДВИГУНІВ

2018 ◽  
pp. 113-117
Author(s):  
Сергій Сергійович Товкач
Keyword(s):  
Automatic Control ◽  
Control Systems ◽  
Gas Turbine ◽  
Turbine Engines ◽  
Training Procedure ◽  
Gas Turbine Engines ◽  
Automatic Control Systems ◽  
Aviation Engines ◽  
And Control ◽  
The Impact

The article is devoted to the development of modern models and algorithms for information processing for the prediction, diagnosing and maintenance tasks of inter-element interaction in automatic control systems of aviation gas turbine engines. Considered the model of inter-node interaction with the definition of power active points and their neural structures with visualization in the form of scalogramm. Presented a graph of changes the power node characteristics of the automatic control systems of gas turbine engine and the distribution histograms of practically normal states and faults with defect properties on the scale of confidence coefficients based on the control algorithm the prediction and diagnostics processes according to the data of the system survey.The decision support system during the research process has two stages of functioning:1) at the stage of prediction and diagnostics, the measurement of the power characteristics of the active interaction points is determined, and corresponding elements of the models are taken into account the power states formed on the nominal energy state of the nodes;2) at the stage of maintenance and repair, while observing the painted nodes, determine the type, intensity and duration of influence in order to normalize the power of the nodal active points of interaction (to bring the state to a dark brown colour). At the same time, the dynamics of the correction process is well traced, visually visible to which accompanying situations is directed the impact and how it will affect the functioning of the linked nodes and /or systems.During the developing an appropriate system of inter-element interaction in automatic control systems of gas turbine engines, it is possible to receive an educational and control sample to support decision-making, check the reliability of the operation of the received rules, and if necessary, a training procedure can be implemented to improve the accuracy of the classification by training and control samples.The developed rational technology of building the architecture of nodes in the automatic control systems of aviation engines will create high-performance systems of a new generation with a flexible, easily variable structure, increase reliability and durability of operation of automatic control systems of aviation engines.

TURBOTRANS: A Programming Language for the Performance Simulation of Arbitrary Gas Turbine Engines With Arbitrary Control Systems

1982 ◽  
Author(s):  
J. R. Palmer ◽  
Yan Cheng-Zhong
Keyword(s):  
Control Systems ◽  
Gas Turbine ◽  
Programming Language ◽  
Computer Code ◽  
Analytical Tool ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Performance Simulation ◽  
High Level ◽  
And Control

A generalized modular digital computer code — TURBODYNE — is shown to be a flexible easily coded high-level programming language for the steady-state and transient performance simulation of arbitrary gas turbine engines with arbitrary control systems. The configuration of the engine and control system can be simply described by using “CODEWORDS” corresponding to the various components and processes of both engine and control systems. TURBOTRANS is an analytical tool for performance simulation of gas turbine engines with their control systems. Its modular structure facilitates additional features when required.

Multiparametric Diagnostics of Gas Turbine Engines

2014 ◽  
Vol 156 (A2) ◽  
Keyword(s):  
Gas Turbine ◽  
High Speed ◽  
Technical Condition ◽  
Diagnostic Methods ◽  
Turbine Engines ◽  
Technical Diagnostics ◽  
Suitable Model ◽  
Gas Turbine Engines ◽  
Advantages And Disadvantages ◽  
The Matrix

This article addresses the issue of diagnostics and maintenance of Gas Turbine Engines which are located in high Speed Ferries, Cruisers, Frigates, Corvettes, etc. Assurance of reliable operation can be performed only by using correct diagnostic methods and procedures of monitoring the condition of the devices and by selecting the correct strategy of maintenance. The issue of monitoring the technical condition of Gas Turbine Engines is treated through multiparametric methods of technical diagnostics incorporated into predictive maintenance, which is a part of proactive maintenance. There are methods of vibrodiagnostics, thermography, tribology, borescopy and emissions measurement. Each of these methods has lots of advantages and disadvantages; therefore it is very important to ensure their correct combination for trouble-free operation of those important facilities. Their suitability at work is discussed in the matrix of diagnostic methods application and the PF chart. The output of the work is a proposal of a suitable model of maintenance control which uses multiparametric diagnostic methods for small and big Gas Turbine Engines and optimizes maintenance costs.

Renovation features of powder high-speed steels broaches with plazma hardening

2021 ◽  
pp. 82-85
Author(s):  
A.S. Politov ◽  
R.R. Latypov
Keyword(s):  
Gas Turbine ◽  
Comparative Studies ◽  
High Speed ◽  
Atmospheric Plasma ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Cold Atmospheric Plasma ◽  
Plasma Hardening

The comparative studies results of the durability of cutting properties of new and restored by regrinding and repeated plasma hardening with the application of multi-layer Si—O—C—N nanocoating system (PECVD by cold atmospheric plasma) powder high — speed steels broaches teeth for the processing of hard-to-process materials profilecomposite gas-turbine engines components are presented.

LV100 AIPS Technology—For Future Army Propulsion

1992 ◽  
Author(s):  
Walter Brockett ◽  
Angelo Koschier
Keyword(s):  
Control Systems ◽  
Gas Turbine ◽  
Fuel Consumption ◽  
Cooling System ◽  
Gas Turbine Engine ◽  
Air Filtration ◽  
Turbine Engine ◽  
Overall Design ◽  
Armored Vehicle ◽  
And Control

The overall design of and Advanced Integrated Propulsion System (AIPS), powered by an LV100 gas turbine engine, is presented along with major test accomplishments. AIPS was a demonstrator program that included design, fabrication, and test of an advanced rear drive powerpack for application in a future heavy armored vehicle (54.4 tonnes gross weight). The AIPS design achieved significant improvements in volume, performance, fuel consumption, reliability/durability, weight and signature reduction. Major components of AIPS included the recuperated LV100 turbine engine, a hydrokinetic transmission, final drives, self-cleaning air filtration (SCAF), cooling system, signature reduction systems, electrical and hydraulic components, and control systems with diagnostics/prognostics and maintainability features.

scholarly journals Gas Turbine Train Development in France

1975 ◽  
Author(s):  
M. R. Garde
Keyword(s):  
Diesel Engine ◽  
Gas Turbine ◽  
High Speed ◽  
Rolling Stock ◽  
Lightweight Construction ◽  
The Future ◽  
Railway Traction ◽  
Aircraft Type ◽  
Very High

This paper presents a discussion on aircraft type gas-turbine train development. For railway traction purposes, the turbo-engines used on aircraft would improve the quality of the services provided in the electrified lines. The gas turbine should insure high speed and satisfactory acceleration. It would enable relatively lightweight construction to be carried out and run at a higher speed than trains on non-electrified lines. The gas turbine will not completely replace the diesel engine, but it will enable rolling stock to be constructed for which the diesel is unsuitable, especially in the case of high-speed, lightweight trainsets and, in the future, very high-powered units.

scholarly journals The Methodology of Stochastic Optimization of Parameters and Control Laws for the Aircraft Gas-Turbine Engines Flow Passage Components

1999 ◽  
Author(s):  
I. N. Egorov ◽  
G. V. Kretinin ◽  
S. S. Kostiuk ◽  
I. A. Leshchenko ◽  
U. I. Babi
Keyword(s):  
Stochastic Optimization ◽  
Gas Turbine ◽  
Stochastic Approach ◽  
Turbine Engines ◽  
Problem Solution ◽  
Gas Turbine Engines ◽  
Control Laws ◽  
Flow Passage ◽  
Optimum Solution ◽  
And Control

This paper presents the main theses of stochastic approach to the multimeasure parameters and control laws optimization for the aircraft gas-turbine engines. The methodology allows us to optimize the engines taking into account the technological deflections which inevitably take place in the process of manufacturing of the engine’s components as well as engine’s control deflections. The stochastic optimization is able to find highly robust solutions, stable to inaccuracies in technological processes. The effectiveness of the methodology is shown by example of optimization problem solution to find the control laws for the flow passage controllable elements of the 4-th generation aircraft mixed-flow turbofan engine. The use of information about the existing and advanced production technology levels during the optimization process, including some components manufacturing accuracy, allows us to considerably increase the probability of optimum solution implementation in practice. In real engine there are some components manufacturing deflections as well as control accuracy deflections. It results a certain engine’s performance deviation. An engine optimization classic deterministic approach can not take into account this circumstance, so the probability of an optimum design implementation is too low.

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