The procedure consists in obtaining engine characteristics from a small set of available. Analysis of modelling and simulation methodologies for vehicular propulsion systems theo hofman, dennis van leeuwen and maarten steinbuch control systems technology group, department of mechanical engineering, eindhoven university of technology, p. An overview advances in computational technology and in physicsbased modeling are. Aircraft systems analysis, design and optimization nasa. Develop parallel flow path models of propulsion components to study effect of distortion on propulsion system dynamics and apse first step in the process.
Numerical propulsion system simulation npss, a multi disciplinary system of analysis tools that is focussed on extending the simulation capability from. Modeling and testing of electric vehicle propulsion systems 209 fig. An introduction to thermodynamic performance analysis of. In order to investigate the dynamic characteristic of the spacecraft propulsion system, numerical simulation was carried out based on the modular and extensible simulation model upssim. This document details the functionality of a software program used to streamline a rocket propulsion system design, analysis and simulation effort. The success of your future design will be critically influenced by propulsion technologies onboard. An introduction to thermodynamic performance analysis of aircraft gas turbine engine cycles using the numerical propulsion system simulation code nasatm2007214690 march 2007 national aeronautics and space administration glenn research center cleveland, ohio 445 scott m. Modular aeropropulsion system simulations mapss, cmapss, cmapss40k. The numerical propulsion system simulation npss code was created. A system dynamics exploration of future automotive propulsion regimes by sara susanne metcalf submitted to the sloan school of management and the department of chemical engineering on may 11, 2001 in partial fulfillment of the requirements for the degrees of master of science in management and master of science in chemical engineering abstract. The nasa glenn research center is developing an advanced multidisciplinary analysis environment for aerospace propulsion systems called the numerical. The increasing needs for performance, safety and efficiency cannot be met without integrating innovative propulsion architectures. Steadystate modeling of gas turbine engines using the numerical propulsion system simulation code. In addition, time and cost savings will be achieved by enabling design details to be evaluated early in the development process before a commitment is made to a specific design.
Solicited topics are aligned with these four themes that will support this nasa research area. However, these tools are characterized by large computation times due to the complexity i. Numerical propulsion system simulation npss is an objectoriented, multiphysics, engineering design and simulation environment that enables development, collaboration and seamless integration of system models. Numerical propulsion system simulation sciencedirect. Design, analysis, and simulation of rocket propulsion system by sarah l. In conceptual and preliminary design, many aspects of mechanical products are most efficiently modeled for simulation using 0d1drigid entities. The modular aeropropulsion system simulation mapss is a flexible turbofan engine simulation environment that provides easy access to health, control, and engine parameters through a graphical user interface gui. Propulsion system modeling and simulation request pdf. Modular aeropropulsion system simulations mapss, c. Factoring in the multidisciplinary nature of the automotive propulsion system, this text does two thingsadopts a holistic approach to the subject, especially. This heterogeneous mix of computers should make the optimal use of the ensemble of npss application programs. Design, analysis, and simulation of rocket propulsion system. This paper describes the development of the numerical propulsion system simulation npss, a modular and.
The thrust of the waterjet propulsion system is obtained by the reaction force of the water flow ejected from the propulsion pump. Design and control of automotive propulsion systems focuses on the icebased automotive powertrain system while presenting the alternative powertrain systems where appropriate. Direct torque control dtc, ship propulsion abstract in this paper an effort is made to represent the behaviour. The objective of the numerical propulsion system simulation npss is to provide insight into these complex interactions through computational simulations. Npss single academic license agreement, numerical propulsion system simulation npss is an objectoriented, multiphysics, engineering design and simulation environment that enables development, collaboration and seamless integration of system models. For the present study, the flight optimization system flops, a legacy aircraft synthesis software developed by nasa 14, the numerical propulsion system simulation npss providing engine cycle. System dynamic characteristic simulation of spacecraft. Results show that incorporating the sofc is not beneficial in cases where venting hydrogen overboard is permissible.
Numerical study of propulsion system performance during. Design and control of automotive propulsion systems crc. Download citation the numerical propulsion system simulation. The energy source is the combustion of a fuel carried onboard with oxygen in the air, but it might also be solar power or nuclear power. Kulhanek submitted to the graduate degree program in aerospace engineering and the graduate faculty of the university of kansas in partial fulfillment of the requirements for the degree. Numerical propulsion system simulation npss, a multidisciplinary system of analysis tools that is focussed on extending the simulation capability from components to the lull system. Npss is an objectoriented, multiphysics, engineering design, and simulation environment that enable the development, collaboration, and seamless integration of system models. This will provide the product developer with avirtual wind tunnel that will reduce the number of hardware builds and tests required during the development. On the simulation of an all electric ship powertrain.
The large mass penalties further diminish benefits of the superconducting distributed propulsion system. Continuously variable rotorcraft propulsion system. Npss single evaluation 45 days license agreement, numerical propulsion system simulation npss is an objectoriented, multiphysics, engineering design and simulation environment that enables development, collaboration and seamless integration of system models. Simulator evaluation of simplified propulsiononly emergency flight control systems on transport aircraft frank w. Eai is the official distributor after prior approval from esa and the primary developer of the libraries. Therefore, both of the diesel generators, the fuel cell, and the energy storage supply power to the grid during the first cycle of simulation.
Optimized electric propulsion system modeling and simulation. Simulation npss southwest research institute swri, san antonio, tx. Modeling, simulation and application of power and propulsion systems. Kulhanek submitted to the graduate degree program in aerospace engineering and the graduate faculty of the university of kansas in partial fulfillment of the requirements for the degree of masters of science. For system simulation model and system simulation results are concerned about, the reliability is analyzed from the power supply system, power distribution system, power transformation system, and propulsion system, respectively. Introduction to numerical propulsion system simulation npss.
This concept is called the numerical propulsion system simulation npss. Generic engine cycle model for analysis in npss including inlet, compressor, burner, turbine, duct and nozzle. Design of propulsion control systems based on the simulation. A modelling approach for the overall ship propulsion plant. Methods for simulation and analysis of hybrid electric. The multiphysics system simulation approach enables you to address the great variety of architectures and.
Pdf propulsion system modeling for a multiaircraft simulator. The system is modeled using a nasadeveloped framework called numerical propulsion system simulation npss by assembling thermodynamic models developed for each component. Numerical propulsion system simulation, nasa industry cooperative effort npssnice, npss user guide and reference, nasa john h. Aviation has been and is at the forefront in this respect, and the power sector has always benefited from such innovation. Master of science engineering technology, may 2008, 39 pp. Pdf in this book the longitudinal behavior of road vehicles is analyzed. Implementation of engine loss analysis methods in the numerical propulsion system simulation. In this thesis a modeling and simulation based methodology is proposed to study the general power flow and dynamics of commercial aircraft electrical systems. Physical and numerical modeling for advanced propulsion. Simulated space testing of propulsion units and systems. Numerical propulsion system simulation consortium npss tm user guide software release.
An objectoriented framework for distributed computational. This paper presents the progress in developing the numerical propulsion system simulation, a multifidelity simulation of a complete propulsion system. The model accurately predicts the global behavior of the spacecraft propulsion system in the priming and shutdown process, and also correctly describes the. Ship electric propulsion simulation system reliability. Pdf implementation of engine loss analysis methods in the. This model can be used for investigating the engine. Mathematical modelling of dieselelectric propulsion systems. Lytle national aeronautics and space administration glenn research center cleveland. The main motivation for modelling a dieselelectric propulsion dep system is for simulation of different scenarios to check for performance and stability in the electrical network, and improving the power management system pms with more advanced control theory, both. One of the key challenges to an integrated modeling and simulation approach is that the dynamics for each aircraft system operate at different time scales. This paper describes the development of the numerical propulsion system simulation npss, a modular and extensible framework for the integration of multicomponent and multidisciplinary analysis tools using geographically distributed resources such as computing platforms, data bases, and people.
Ohio 445 abstract advances in computational technology and in physicsbased modeling are making large scale, detailed. You are aiming for efficient designs and engineering and want your ships and marine technology to be safe, ecofriendly and economical to operate. The european space propulsion system simulation espss is an esa initiative that aims to create a european simulation platform for spacecraft and launch vehicle propulsion systems. During high speeds 140 radsec, the propulsion system demands highest amount of power. Allowing for a much higher specific impulse of up to 104 s, the total thrust delivered by a plasma propulsion system is typically around 1 n and some 20 mn for ion propulsion. Pdf propulsion system modeling for a multiaircraft. Numerical propulsion system simulation ora research. The method is then applied to model a turbofandriven tedp system, which produces thrust by both the propulsors array and the coreengines. Concluding remarks the numerical propulsion system simulation is a long range program with the ultimate goal of devel oping the capability to reduce the cost and time of developing advanced technology propulsion systems. Calculation of the mechanical efficiency of a dual, doubleacting piston propulsion system. Steadystate modeling of gas turbine engines using the numerical. Jun 21, 2018 modular aeropropulsion system simulations mapss, cmapss, cmapss40k.
Design of propulsion control systems based on the simulation of nautical manoeuvres stefan kruger 1, tobias haack1 1 ab 314 ship design and information technology, tu hamburgharburg. Rocket test facility arnold engineering development center arnold air force station, tennessee abstract an estimate of the major simulation requirements for highaltitude tests of rocket engines and engine systems is presented. The solution of these problems very often demands engineers who are versed in the latest knowhow in system modeling and simulation. Prousalidis school of naval architecture and marine engineering national technical university of athens greece keywords. Hamburg, germany abstract heading a time domain simulation tool for manoeuvring purposes based on body forces has been developed, inte.
The total weight of the electric system would be around 5,0007,000 kg. Maine dryden flight research center edwards, california john kaneshige nasa ames research center moffett field, california john bull caelum research corporation nasa ames research center moffett field. The propulsion power highly reduces with the reduction of propeller rotational speed and ship speed. Simulation of marine diesel engine understanding of the physical processes. Integrated system design inspace propulsion systems johnson space center jsc has led the development and certification of a majority of nasa inspace onboard human spacecraft propulsion systems and is actively engaged in the development and demonstration of advanced propulsion system technologies. What is numerical propulsion system simulation npss.
The goals of this model are multiple and complex to achieve realtime modeling, simulation and risk assessment, and its components and system integration can be applied to many technological problems of present interest, such as the engineering models and simulations of complete propulsion systems. Numerical simulation of magneticnozzle flows, abstract numerical simulations of magneticnozzle flows have been successfully conducted in the interest of providing valuable insights and detailed design guidance to nearfuture experimental efforts. Turboelectric distributed propulsion system modelling. Introduction propulsion systems are those that are required to propel the vehicles to which they are attached. Lytle national aeronautics and space administration glenn research center cleveland, ohio 445 summary advances in computational technology and in physicsbased modeling are making largescale, detailed simulations of complex systems possible within the design environment. Analysis of modelling and simulation methodologies for. Numerical propulsion system simulation how is numerical. European space propulsion system simulation espss is an european space agency esa toolkit for modelling rocket and satellite propulsion systems. Simulation comparing test and simulation results pressure profile by ramping back pressure difference in shock position back pressure nm2. The program aids in unifying the nozzle, chamber and injector portions of a rocket propulsion system design effort quickly and efficiently using a streamlined graphical user interface gui. This breakthrough has enabled the detailed simulation of major propulsion system components to become a routine part of designing systems, providing the designer with critical information about the components early in the design process. For analyses and optimizations of ship systems, the multiphysics simulation software simulationx is the tool of choice.
An application was developed to allow users to run and view the numerical propulsion system simulation npss engine simulations from web browsers. It consists of a set of libraries based on the ecosimpro simulation environment. Simulated space testing of propulsion units and systems 1 joel ferrell2 aro, inc. Taking advantage of moving within a fluid, aircraft propulsion is achieved by airbreathing engines, i. Espss provides a stateoftheart tool for analyzing different phenomena in. However, when venting hydrogen is not permissible which is the. Liquid nitrogen propulsion systems for automotive applications. Numerical simulation on hydraulic characteristics of nozzle.
A system dynamics exploration of future automotive. I am submitting herewith a thesis written by naveen kumar vallabhaneni entitled continuously variable rotorcraft propulsion system. Shaft work balance and rotor dynamics are deduced from the estimated torque on each turbinecompressor blade row. Southwest research institute swri, san antonio, tx august 2019 npss is an object oriented, multiphysics, engineering design and simulation environment which enables development, collaboration and seamless integration of system models. Modular aeropropulsion system simulations mapss, cmapss. The main motivation for modelling a dieselelectric propulsion dep system is for simulation of different scenarios to check for performance and stability in the electrical network, and improving the power management system pms with more advanced control theory, both for fuel optimization and increased safety. A multidisciplinary design system for aerospace vehicles john k. Propulsion system simulation npss is to provide insight into these complex interactions through computational simulations. Gili 4 department of mechanical and aerospace engineering, politecnico di torino. The integral team has been working for two years to support glenns numerical propulsion system simulation npss, an effort that has received nasas prestigious turning goals into reality tgir award last april.
The simulation results of energy management system in time matlabadvisor modeling one of the most used software tools for the analysis of hybrid vehicles is matlabsimulink simulation environment, plus package advisor advanced. To address these issues, we have developed onyx, a javabased objectoriented application framework for aerospace propulsion system simulation. Finally ship electric propulsion simulation system reliability evaluation system is shown in figure 1. Methods for simulation and analysis of hybrid electric propulsion systems article in ceas aeronautical journal 62. A procedure for high accuracy propulsion modeling in a multiaircraft simulator environment is described. Framework for combined control and design optimization of. Multifidelity, multidisciplinary optimization frameworks, such as numerical propulsion system simulation npss, have been developed by nasa but have limited capabilities to simulate complete vehicle systems. By this definition, propulsion systems are many and varied, starting from our muscles using which we propel ourselves in walking, running, swimming, and so on. The numerical propulsion system simulation ntrs nasa. In this study, the traditional propulsion system is investigated, consisting of a marine twostroke turbocharged diesel engine, connected directly with a fp propeller. I have examined the final electronic copy of this thesis for form and content and recommend that it be accepted in partial fulfillment of the. This was done by creating a toolset composed of the crucial elements to model an aircraft electrical system that consists of power sources, power conversion, power distribution, and. Mathematical modelling of dieselelectric propulsion. The modular aeropropulsion system simulation mapss is a flexible turbofan engine simulation environment that provides easy access to health, control, and engine parameters through a.
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