scholarly journals Combined Propulsion System Analysis for Naval Combatant Vessels using Diesel and Gas Turbine Engine

2011 ◽  
Vol 15 (5) ◽  
pp. 16-21
Author(s):  
H.M. Lee
Keyword(s):  
Gas Turbine ◽  
System Analysis ◽  
Gas Turbine Engine ◽  
Propulsion System ◽  
Turbine Engine

scholarly journals Mathematical modelling of a gas turbine engine based hybrid propulsion system for regional airplanes

2021 ◽  
Vol 1891 (1) ◽  
pp. 012001
Author(s):  
Y A Ravikovich ◽  
A B Agulnik ◽  
D P Kholobtsev ◽  
D A Borovikov
Keyword(s):  
Mathematical Modelling ◽  
Gas Turbine ◽  
Gas Turbine Engine ◽  
Propulsion System ◽  
Hybrid Propulsion ◽  
Turbine Engine

Gas Turbine Engine Mainshaft Roller Bearing-System Analysis

1973 ◽  
Vol 95 (4) ◽  
pp. 401-416 ◽  
Author(s):  
J. H. Rumbarger ◽  
E. G. Filetti ◽  
D. Gubernick
Keyword(s):  
Gas Turbine ◽  
High Speed ◽  
System Analysis ◽  
Roller Bearing ◽  
Rolling Friction ◽  
Gas Turbine Engine ◽  
Transfer Coefficients ◽  
Turbine Engine ◽  
Mechanics Model ◽  
Fluid Mechanics Model

An interdisciplinary systems analysis is presented for high-speed gas turbine engine mainshaft roller bearings which will enable the designer to meet the demands for ever higher rotative speeds and operating temperatures. The latest elastohydrodynamic experimental traction data are included. Analytical results cite a need for better definition of the rolling friction portion of the total traction. A fluid mechanics model for the detailed analysis of fluid drags is developed based upon a turbulent vortex-dominated flow and includes the effect of lubricant flow through the bearing. A complete thermal analysis including dynamic and thermal effects upon bearing dimensions and resulting clearances is also included. Heat transfer coefficients are given in detail. Shaft power loss and cage slip predictions as a function of load, speed, and lubricant supply correlate well with available experimental data.

Steady-State Modeling of Gas Turbine Engines Using the Numerical Propulsion System Simulation Code

2010 ◽  
Author(s):  
Scott M. Jones
Keyword(s):  
Steady State ◽  
Gas Turbine ◽  
System Simulation ◽  
Gas Turbine Engine ◽  
Propulsion System ◽  
Performance Estimation ◽  
Basic Knowledge ◽  
Turbine Engine ◽  
Starting Point ◽  
Engine Cycle

The Numerical Propulsion System Simulation (NPSS) code was created through a joint United States industry and National Aeronautics and Space Administration (NASA) effort to develop a state-of-the-art aircraft engine cycle analysis simulation tool. Written in the computer language C++, NPSS is an object-oriented framework allowing the gas turbine engine analyst considerable flexibility in cycle conceptual design and performance estimation. Furthermore, the tool was written with the assumption that most users would desire to easily add their own unique objects and calculations without the burden of modifying the source code. The purpose of this paper is twofold: first, to present an introduction to the discipline of thermodynamic cycle analysis to those who may have some basic knowledge in the individual areas of fluid flow, gas dynamics, thermodynamics, and turbomachinery theory but not necessarily how they are collectively used in engine cycle analysis. Second, this paper will show examples of performance modeling of gas turbine engine cycles specifically using Numerical Propulsion System Simulation concepts and model syntax. Current practices in industry and academia will also be discussed. While NPSS allows both steady-state and transient simulations and is written to facilitate higher orders of analysis fidelity, the pedagogical example will focus primarily on steady-state analysis of an aircraft mixed flow turbofan at the 0-D and 1-D level. Ultimately it is hoped that this paper will provide a starting point by which both the novice cycle analyst and the experienced engineer looking to transition to a superior tool can use NPSS to analyze any kind of practical gas turbine engine cycle in detail.

scholarly journals Control System for a 373 kW, Intercooled, Two-Spool Gas Turbine Engine Powering a Hybrid Electric World Sports Car Class Vehicle

1996 ◽  
Author(s):  
Charles C. Shortlidge
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Electric Vehicle ◽  
Hybrid Electric Vehicle ◽  
Gas Turbine Engine ◽  
Propulsion System ◽  
System Control ◽  
Turbine Engine ◽  
Vehicle Propulsion ◽  
Hybrid Electric

SatCon Technology Corporation has completed design, fabrication, and the first round of test of a 373 kW (500 hp), two-spool, intercooled gas turbine engine with integral induction type alternators. This turbine-alternator is the prime mover for a World Sports Car class hybrid electric vehicle under development by Chrysler Corporation. The complete hybrid electric vehicle propulsion system features the 373 kW (500 hp) turbine-alternator unit, a 373 kW (500 hp) 3.25 kW-h (4.36 hp-h) flywheel, a 559 kW (750 hp) traction motor, and the propulsion system control system. This paper presents and discusses the major attributes of the control system associated with the turbine-alternator unit. Also discussed is the role and operational requirements of the turbine-alternator unit as part of the complete hybrid electric vehicle propulsion system.

Control System for a 373 kW, Intercooled, Two-Spool Gas Turbine Engine Powering a Hybrid Electric World Sports Car Class Vehicle

1998 ◽  
Vol 120 (1) ◽  
pp. 84-88 ◽  
Author(s):  
C. C. Shortlidge
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Electric Vehicle ◽  
Hybrid Electric Vehicle ◽  
Gas Turbine Engine ◽  
Propulsion System ◽  
System Control ◽  
Turbine Engine ◽  
Vehicle Propulsion ◽  
Hybrid Electric

SatCon Technology Corporation has completed design, fabrication, and the first round of test of a 373 kW (500 hp), two-spool, intercooled gas turbine engine with integral induction type alternators. This turbine alternator is the prime mover for a World Sports Car class hybrid electric vehicle under development by Chrysler Corporation. The complete hybrid electric vehicle propulsion system features the 373 kW (500 hp) turbine alternator unit, a 373 kW (500 hp) 3.25 kW-h (4.36 hp-h) flywheel, a 559 kW (750 hp) traction motor, and the propulsion system control system. This paper presents and discusses the major attributes of the control system associated with the turbine alternator unit. Also discussed is the role and operational requirements of the turbine alternator unit as part of the complete hybrid electric vehicle propulsion system.

Hardware-in-the-loop simulation of fuel control actuator of a turboshaft gas turbine engine

2018 ◽  
Vol 233 (3) ◽  
pp. 969-977 ◽  
Author(s):  
Amin Salehi ◽  
Morteza Montazeri-Gh
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Gas Turbine Engine ◽  
Propulsion System ◽  
Hardware In The Loop ◽  
Electronic Control ◽  
Turbine Engine ◽  
Turboshaft Engine

The turboshaft engine is the major component in the propulsion system of most marine vehicles, and proper control of its function as a sub-system in the propulsion system has a direct impact on the performance of the vehicle’s propulsion control system. The engine performance control is performed through the fuel control system. The fuel control system of a turboshaft gas turbine engine consists of two parts: electronic control unit and fuel control unit which is the actuator of the fuel control system. In this article, a hardware-in-the-loop simulation is presented for testing and verifying the performance of the fuel control unit. In the hardware-in-the-loop simulation, the fuel control unit in hardware form is tested in connection with the numerically simulated model of engine and electronic control unit. In this simulation, a Wiener model for the turboshaft engine is developed which is validated with the experimental data. Subsequently, a multi-loop fuel controller algorithm is designed for the engine and the parameters are optimized so that the time response and physical constraints are satisfied. In the next step, a state-of-the-art hydraulic test setup is built and implemented to perform the hardware-in-the-loop test. The test system contains personal and industrial computer, sensors, hydraulic components, and data acquisition cards to connect software and hardware parts to each other. In this hardware-in-the-loop simulator, a host–target structure is used for real-time simulation of the software models. The results show the effectiveness of hardware-in-the-loop simulation in fuel control unit evaluation and verify the steady and transient performance of the designed actuator.

Sign in / Sign up

Export Citation Format

Share Document