scholarly journals Aiming for Alarm System Improvements for Ship Engine Operation Using Engine Control Console Alarm Data

2021 ◽  
Vol 56 (6) ◽  
pp. 961-969
Author(s):  
Adi Mas Nizar ◽  
Takashi MIWA ◽  
Takashi OZAKI ◽  
Makoto UCHIDA
Keyword(s):  
Alarm System ◽  
Engine Control ◽  
Engine Operation ◽  
Control Console

Turbine Blade Tip Clearance Measurement Instrumentation

2007 ◽  
Author(s):  
Eric B. Holmquist ◽  
Peter L. Jalbert
Keyword(s):  
Control System ◽  
Real Time ◽  
Tip Clearance ◽  
Engine Control ◽  
Operating Characteristics ◽  
Static Structure ◽  
Engine Operation ◽  
Area Of Interest ◽  
Blade Tip ◽  
Blade Tip Clearance

New and future gas turbine engines are being required to provide greater thrust with improved efficiency, while simultaneously reducing life cycle operating costs. Improved component capabilities enable active control methods to provide better control of engine operation with reduced margin. One area of interest is a means to assess the relative position of rotating machinery in real-time, in particular hot section turbo machinery. To this end, Hamilton Sundstrand is working to develop a real-time means to monitor blade position relative to the engine static structure. This approach may yield other engine operating characteristics useful in assessing component health, specifically measuring blade tip clearance, time-of-arrival, and other parameters. UTC is leveraging its many years of experience with engine control systems to develop a microwave-based sensing device, applicable to both military and commercial engines. The presentation will discuss a hot section engine demonstration of a blade position monitoring system and the control system implications posed by a microwave-based solution. Considerations necessary to implement such a system and the challenges associated with integrating a microwave-based sensor system into an engine control system are discussed.

scholarly journals Optimization of gas turbine engine control using dynamic programming

2018 ◽  
Vol 220 ◽  
pp. 03002
Author(s):  
Venedikt Kuz’michev ◽  
Ilia Krupenich ◽  
Evgeny Filinov ◽  
Andrey Tkachenko
Keyword(s):  
Dynamic Programming ◽  
Differential Equations ◽  
Control Function ◽  
Minimax Principle ◽  
Engine Control ◽  
Engine Operation ◽  
Turbine Engine ◽  
Control Optimization ◽  
Aircraft Performance ◽  
Performance Calculation

The aim of engine control optimization is to derive the optimal control law for engine operation managing during the aircraft flight. For numerical modeling a continuous flight process defined by a system of differential equations is replaced by a discrete multi-step process. Values of engine control parameters in particular step uniquely identify a system transitions from one state to another. The algorithm is based on the numerical method of dynamic programming and the Bellman optimality principle. The task is represented as a sequence of nested optimization subtasks, so that control optimization at the first step is external to all others. The optimum control function can be determined using the minimax principle of optimality. Aircraft performance calculation is performed by numerical integration of differential equations of aircraft movement.

scholarly journals 2B3-1　The Usability about Engine Control Console on Vessel

2013 ◽  
Vol 49 (Supplement) ◽  
pp. S292-S293
Author(s):  
Toshiaki ARITA ◽  
Ken-ichiro KAWAMOTO ◽  
Kohei HIRONO ◽  
Makoto UCHIDA ◽  
Masao FURUSHO
Keyword(s):  
Engine Control ◽  
Control Console

scholarly journals Analysis of the Quality Assessment of the Jet Engines Rotational Speed Signal from Set Value and Noise / Analiza Oceny Jakości Przebiegu Prędkości Obrotowej Silnika Odrzutowego Od Wartości Zadanej I Sygnału Zakłócenia

2012 ◽  
Vol 22 (1) ◽  
pp. 181-191
Author(s):  
Golak Karol ◽  
Lindstedt Paweł
Keyword(s):  
Noise Signal ◽  
Engine Control ◽  
Jet Engines ◽  
Technical Object ◽  
Engine Operation ◽  
Set Point ◽  
Ground Testing ◽  
Military Aviation ◽  
Ground Test ◽  
The Impact

Abstract Turbojet engine is a complex technical object. It fulfils an important role in the civil and military aviation. Its undesired operation can lead to tragic accidents. Hence the large role takes the proper preparation for work and adequate regulation. The correctness of the engine work is tested periodically during ground tests. During the ground tests the responses to set engine control lever (DSS) shift is examined, thus means that the engine is examined from the "set point". During ground testing is not possible to reflect the impact of changing conditions during engine operation in flight so the engine is not tested on the noise signal. It turns out that it is the properties of the noise signal often have a decisive effect on the engine operation correctness and by that on the safety of the flight. Hence there is a need to develop methods to assess the state of the engine control signal from noise on the basis of standard ground test from the set point (delivered by the DSS).

scholarly journals Development of a method for selecting a cruising mode and engine control program of a ramjet aircraft

2021 ◽  
Vol 3 (3 (111)) ◽  
pp. 6-14
Author(s):  
Oleh Kislov ◽  
Mykhailo Shevchenko
Keyword(s):  
Fuel Consumption ◽  
Power Plants ◽  
Control Program ◽  
Operating Mode ◽  
Specific Fuel Consumption ◽  
Engine Control ◽  
Engine Operation ◽  
Control Factors ◽  
Range Parameter ◽  
Operation Parameters

For supersonic cruising, combined power plants can be used, in which a gas turbine engine reaches the cruising mode, and a ramjet is used for cruising. Supersonic transoceanic flights are characterized by a long cruising segment, which is decisive in terms of required fuel mass. Therefore, the selection of cruising and engine operation parameters is an important task. As a rule, when selecting the cruising mode, the range parameter is used, which depends on the flight and engine operation modes. To take into account the influence of the ramjet operating mode on the range parameter, dimensionless relationships of engine parameters with control factors were obtained. Using the obtained relationships together with the equations of aircraft motion in steady horizontal flight, it is shown that the values of the engine control factors and the range parameter do not change at the altitudes of 11...20 km. This made it possible to conclude that the range parameter can be increased only by selecting the cruising and engine parameters that provide the minimum specific fuel consumption. The variable cruising parameters are speed and initial altitude. A method for selecting the cruising and ramjet operation parameters was developed, based on the analysis of the relationship between the range parameter and the flight speed and initial altitude at the most advantageous values of the engine control factors. The obtained relationships allow selecting the cruising parameters and the engine operating mode, taking into account the restrictions. It is shown that the specific fuel consumption decreases by 0...30 %, depending on the engine operating mode, when the control program is optimized

Sonic Movements – Spatial Reflexivity

Somatechnics ◽  
2014 ◽  
Vol 4 (1) ◽  
pp. 133-148
Author(s):  
Johanna Hällsten
Keyword(s):  
Alarm System ◽  
Edo Period ◽  
Public Places ◽  
Ongoing Research ◽  
Site Specific ◽  
Rural Environments ◽  
The World ◽  
Architectural Structures ◽  
Sonic Environment ◽  
Sonic Structures

This article aims to investigate the creation of space and sound in artistic and architectural fields, with particular emphasis on the notions of interval and duration in the production and experience of soundscapes. The discussion arises out of an ongoing research project concerning sonic structures in public places, in which Japanese uguisubari ([Formula: see text]) – ‘nightingale flooring’, an alarm system from the Edo period) plays a key role in developing new kinds of site-specific and location-responsive sonic architectural structures for urban and rural environments. This paper takes uguisubari as its frame for investigating and evaluating how sounds create a space (however temporary), and how that sound in turn is created through movement. It thus seeks to unpick aspects of the reciprocal and performative act in which participant and the space engage through movement, whilst creating a sonic environment that permeates, defines and composes the boundaries of this space. The article will develop a framework for these kinds of works through a discussion on walking, movement, soundscape and somatechnical aspects of our experience of the world, drawing upon the work of Merleau-Ponty, Bergson and the Japanese concept of Ma (space-time).

DIESEL ENGINE OPERATION IN USE OF FUEL WITH ADDITIVES

2018 ◽  
pp. 18-24
Author(s):  
Petar Kazakov ◽  
Atanas Iliev ◽  
Emil Marinov
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Internal Combustion Engines ◽  
Experimental Studies ◽  
Combustion Engines ◽  
Engine Operation ◽  
Factors Affecting ◽  
Operating Modes ◽  
Positive Effects

Over the decades, more attention has been paid to emissions from the means of transport and the use of different fuels and combustion fuels for the operation of internal combustion engines than on fuel consumption. This, in turn, enables research into products that are said to reduce fuel consumption. The report summarizes four studies of fuel-related innovation products. The studies covered by this report are conducted with diesel fuel and usually contain diesel fuel and three additives for it. Manufacturers of additives are based on already existing studies showing a 10-30% reduction in fuel consumption. Comparative experimental studies related to the use of commercially available diesel fuel with and without the use of additives have been performed in laboratory conditions. The studies were carried out on a stationary diesel engine СМД-17КН equipped with brake КИ1368В. Repeated results were recorded, but they did not confirm the significant positive effect of additives on specific fuel consumption. In some cases, the factors affecting errors in this type of research on the effectiveness of fuel additives for commercial purposes are considered. The reasons for the positive effects of such use of additives in certain engine operating modes are also clarified.

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