Angebote zu "Simulation" (15 Treffer)

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Robust Aerodynamic Design of Mars Exploratory A...
79,00 € *
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A new robust design optimization approach "design for multi-objective six sigma (DFMOSS)" has been developed, and aerodynamic design optimizations of Mars exploratory airplane wing considering the effects of wind variations were carried out by using the DFMOSS coupled with the computational fluid dynamics (CFD) simulation. The present optimizations successfully revealed detailed trade-off information between the optimality and the robustness of aerodynamic performance more efficiently than conventional robust optimization approaches. In addition, useful guides to more reliable design of Mars exploratory airplane wing and more reliable Mars exploratory missions using the airplanes were provided by discussing the obtained trade-off information from an aerodynamic viewpoint.

Anbieter: Dodax
Stand: 29.02.2020
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Development of a Simulator for the Testing of A...
59,00 € *
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Avionics displays play an important role in the safe operation of an airplane. They present information to the pilot, on which he/she will make important decisions to control the aircraft. Accurate display of information must be guaranteed in all flight conditions. Failure of that function can lead to catastrophic situations. Intensive testing, in real or simulated flight conditions, is a way to validate the proper operation of the avionics displays. For the avionics emulator (data generator), we make use of a commercially available package called X-Plane for flight simulation. The main objective of this work is to investigate the X-Plane s compatibility with the avionics displays' data model. Furthermore, in order to prove our testimonial, an interface has been developed to send data to the avionics display unit. Additionally an extension has been made to save and load predefined scenarios and flight profiles. By sending dynamic coherent data towards an avionics display, a first step towards high level testing has been made and critical situations can be simulated as the avionics display is functioning like in a real aircraft.

Anbieter: Dodax
Stand: 29.02.2020
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TILTROTOR UAV DESIGN
59,00 € *
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Aerial vehicles have proved their usefulness in military (combat, deployment of units, patrolling, surveillance, reconnaissance, etc.) and civil areas (transport, search and rescue, fire-fighting, etc.) of applications over a hundred years. Tiltrotor UAVs provide a unique platform that fulfills the needs for ever-changing mission requirements by combining the desired features, hovering like a helicopter and reaching high forward speeds like an airplane. In this book, the conceptual design and aerodynamical model of a realizable small-sized Tiltrotor UAV is constructed, the linearized state-space models are obtained around the trim points for airplane, helicopter and conversion modes, controllers are designed using Linear Quadratic Regulator methods and gain-scheduling is employed to obtain a simulation for the whole flight envelope. Eventually, the ideas for making a real flying model are established according to simulation results. The analysis should help to both theorists and practitioners who are eager to explore the features of the new aircraft types.

Anbieter: Dodax
Stand: 29.02.2020
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Local Large-Eddy Simulation of a Slat-Wing Conf...
45,79 € *
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Noise generated by high-lift devices is an essential part of the emitted sound of an airplane especially during approach when the engines run almost in idle conditions. The sound spectra are characterized by a mix of tonal and broadband components which are originated by the turbulent flow field, i.e., the noise generation is dominated by vortex-vortex and vortexwall interaction. Therefore, in the present study the turbulent flow field over a slat-main wing configuration is investigated by a large-eddy simulation (LES) and subsequently, the obtained unsteady flow data is used to analyze the acoustic field based on the acoustic perturbation equations (APE). The computations are performed at a freestream MACH number of Ma=0.16 at an angle of attack of 13 deg. The REYNOLDS number which is based on the clean chord length and the freestream velocity is Re= 1.4x10 6 . It is shown that a pure LES is not suitable for industrial applications when high REYNOLDS numbers are considered due to the vast required computational effort. Therefore, in the present work a zonal method is developed and implemented which combines the Ravsorns-averaged NAVIER-STOKES (RANS) equations and the spatially filtered NAVIER-STOKES equations solved in a large-eddy simulation, i.e., in regions where unsteady turbulent flow data is required an LES is performed whereas the remaining flow field regions are computed by a RANS simulation which is in terms of computational effort more efficient than an LES. First, the zonal RANS/LES method is validated by turbulent channel flow simulations and, second, it is applied to the slat-main wing configuration.

Anbieter: Dodax
Stand: 29.02.2020
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Computational Eulerian- Eulerian Analysis of In...
49,00 € *
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In-flight icing occurs mostly during airplane take-off and approach where the airplane ground speed is still low enough to permit ice accretion, due to supercooled water droplets impingement. If unaddressed, such occurrences can be fatal. The problem is compounded by the large power requirements during take-off and landing which might affect the ice protection systems performance adversely. In this work, the Eulerian-Eulerian 3-D approach to calculating water droplet impingement is presented, with validation results in both 2-D and 3-D. A 3-D analysis is also carried out over a Convair-580 nose and cockpit geometry. This full-scale 3-D analysis is a simulation of a flight segment of the Canadian Freezing Drizzle Experiment as conducted by the Atmospheric Environment Services. Special emphasis is given to side window impingement on the Convair-580. The advantages of the Eulerian approach over the classical Lagrangian approach are also discussed.

Anbieter: Dodax
Stand: 29.02.2020
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Simulation Software
34,00 € *
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Simulation software is based on the process of imitating a real phenomenon with a set of mathematical formulas. It is, essentially, a program that allows the user to observe an operation through simulation without actually performing that operation. Simulation software is used widely to design equipment so that the final product will be as close to design specs as possible without expensive in process modification. Simulation software with real-time response is often used in gaming, but it also has important industrial applications. When the penalty for improper operation is costly, such as airplane pilots, nuclear power plant operators, or chemical plant operators, a mock up of the actual control panel is connected to a real-time simulation of the physical response, giving valuable training experience without fear of a disastrous outcome.

Anbieter: Dodax
Stand: 29.02.2020
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New Results in Numerical and Experimental Fluid...
299,59 € *
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This volume contains the contributions to the 17th Symposium of STAB (German Aerospace Aerodynamics Association). STAB includes German scientists and engineers from universities, research establishments and industry doing research and project work in numerical and experimental fluid mechanics and aerodynamics, mainly for aerospace but also for other applications. Many of the contributions collected in this book present results from national and European Community sponsored projects. This volume gives a broad overview of the ongoing work in this field in Germany and spans a wide range of topics: airplane aerodynamics, multidisciplinary optimization and new configurations, hypersonic flows and aerothermodynamics, flow control (drag reduction and laminar flow control), rotorcraft aerodynamics, aeroelasticity and structural dynamics, numerical simulation, experimental simulation and test techniques, aeroacoustics as well as the new fields of biomedical flows, convective flows, aerodynamics and acoustics of high-speed trains.

Anbieter: Dodax
Stand: 29.02.2020
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Astragon INDUSTRY MANAGER: FUTURE TECHNOLOGIES ...
9,98 € *
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Have you always dreamed of building your own empire and raking in the big money? The world is changing fast and a second industrial revolution is right around the corner. Economy is changing from an industrial one into a technological-driven one and you can't be left behind. INDUSTRY MANAGER: Future Technologies is a classic economy simulation in which you can build your own empire, research new sustainable products, and sweep aside the competition on your way to fame and success. Take a marketoriented approach to de-sign, produce, position and sell modern products. With limited liquid capital and an eye for the right product range, you can become the most successful capitalist in the world!nnINDUSTRY MANAGER: Future Technologies focuses on a sophisticated singleplayer experience, offering you a complex economic system. Your aim: To build a profitable empire by expanding your product range and researching new products, thereby outsmarting your competitors. But your mission won't be easy! Among other things, you'll have to consider the global market when expanding your production pipeline. Build your empire on the laws of supply and demand, market your products based on their best qualities and sell them in different markets.nnYou'll need to build your production chain as economically as possible, based on market research and the availability of resources, in order to develop and distribute goods with maximum efficiency. By researching new production technologies and product innovations you'll be able to improve and advance your consumer goods. Always keep an eye on your competitors as they also have their own agendas and will influence the dynamic market as well as supply and demand. Develop completely new, customizable products such as the energy-efficient airplane, a digital computer watch or an exclusive bicycle with three wheels.nnINDUSTRY MANAGER: Future Technologies offers an intuitive user interface perfect for beginners, but also a range of configuration options to delight advanced players too. INDUSTRY MANAGER: Future Technologies is a sandbox economy simulation with a vibrant economic system, complete with supply and demand. The economy doesn't stand still, but is influenced by all your actions and those of your opponents. Sell your products locally in your stores or globally on the world market. Later in the game you can also buy and sell stocks on the stock market and take over your opponents' companies.

Anbieter: Dodax
Stand: 29.02.2020
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Creative Adventures in Social Pb
111,00 CHF *
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The creative activities and resources in this book will help teachers improve their students' academic skills, inject humor into their classes, and illustrate the connections between American history, cultural changes, human behavior, ethical issues, current events, and students' lives. Students who complete these lessons will feel a connection with their teachers and will be motivated to make a difference in the world. This book is ideal for U.S. history and social studies instructors who have students in upper elementary, middle, high school, or college classrooms. The innovative lessons range from debates about Disney's Pocahontas and an episode of The Simpsons to content analyses of I Love Lucy and Seinfeld, to the creation of political satire, to a paper airplane assembly line contest. The book also includes the following: fantasy Senate races; an examination of changes in the portrayals of African Americans and women in ads; American Revolution and 1920s Celebrity Meetings; a simulation of the American colonies in which students earn 'money' and pay taxes; an animal rights debate about Ugg boots and NBA leather basketballs; college admissions interviews for influential people; and explorations involving music, architecture, movies, acting, art, and political cartoons. The exercises help teachers build a strong classroom community and reach students who have different learning styles and abilities by activating students' multiple intelligences. Overall, the lessons promote thoughtful and enthusiastic participation, and they incorporate movement, music, architecture, movies, acting, art, political cartoons, and technology. This book provides social studies teachers and education professors with new ideas that will invigorate their classroom and energize students.

Anbieter: Orell Fuessli CH
Stand: 29.02.2020
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