design and development of aircraft systems an introduction

... Trang 1DESIGN AND DEVELOPMENT OF AN AUTONOMOUS OMNI-DIRECTIONAL MOBILE ROBOT SEAN EFREM SABASTIAN (B.Eng.(Hons.)), NUS A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING ... implemented and shows good performance A navigation algorithm has also been implemented and efficacy has been demonstrated Performance analysis has been performed and drawbacks to both the control and ... , x ) and vice versa The translational velocity of wheel hub v i can be divided into a part due to pure translation of the robot and a part due to pure rotation of the robot: rot i trans First,

Ngày tải lên: 04/10/2015, 10:26

... Trang 1Design and Development of an Omnidirectional Mobile Base for a Social Robot LIM HE WEI NATIONAL UNIVERSITY OF SINGAPORE 2011 Trang 2Design and Development of an Omnidirectional ... various handicap [2] To understand the phenomenon of Social Robots and the field of HRI, we can refer to mankind’s history for artificial beings development, robots medieval by today’s standards ... demand, commercial systems have to balance many other factors such as price and turn-around time Commercial systems typically go the way of differential drive systems which are capable of changing

Ngày tải lên: 04/10/2015, 10:26

... BK7 glass and Perspex with and without compensating the tool path Profile of the finished workpiece was measured in a commercially standard CMM machine and significant improvement of dimensional ... pitch and grating incidence angle and can reach the order of submicron The experimental setup is inexpensive and very easy to manage with simple instruments, remote sensing, good accuracy, and ... DEGREE OF MASTER OF ENGINEERING Department of Mechanical Engineering National University of Singapore 2007 Trang 2The author would like to express his deepest and heartfelt thankfulness and appreciation

Ngày tải lên: 04/10/2015, 10:26

... Trang 2Implementation ofROBOT SYSTEMS Trang 4Implementation ofROBOT SYSTEMS An introduction to robotics, automation, and successful systems integration in Trang 5525 B Street, Suite 1800, San ... replacement of man by machine for the performance of tasks, and it can provide movement, datagathering, and decision making Automation therefore covers a very widearray of devices, machines, and systems ... from the development of anautomation strategy This strategy offers a plan from which manufacturerscan develop their expertise and automation use as part of the overallcompany goals 1.2 INTRODUCTION

Ngày tải lên: 29/04/2020, 14:58

... can be deEned as the direct involvement of an organisation with its suppliers and customers in planning jointly for identifying and implementing opportunities for sustainability management and ... shared understanding of their emissions It describes the design and development of a DSS now known as supply chain environmental analysis tool (SCEnAT) in detail, putting its unique and innovative ... framework and analysis, and aggravate the system boundary issue and data truncation problem further Therefore, there is the need for an integrative approach to carbon emission accounting and management

Ngày tải lên: 05/05/2020, 09:18

... and development, manufacture, oper-ation and support of aircraft as well as infrastructure operations, anddevelopments in research and technology The intention is to provide asource of relevant ... long-standing belief that a basic understanding of feedback control systems design, analysis and testing allows thedesign/development engineer to have a clearer understanding of thedynamic functional behavior ... information that will be of interest and benefit to allthose people working in aerospace profes-Ian Moir, Allan Seabridge and Roy Langton Trang 14There are many textbooks on the subject of feedback control;

Ngày tải lên: 20/10/2021, 21:38

... reformer, a SOFC stack, an afterburner, a fuel heat exchanger and an air heat exchanger As with any SOFC system, the performance of the INER SOFC system is dependent not only on the design and operating ... 60036, Taiwan, ROC Abstract The balance of plant (BOP) of a Solid Oxide Fuel Cell (SOFC) system with a 2 kW stack and an electric efficiency of 40% is optimized using commercial GCTool software ... Trang 1E NERGY AND E NVIRONMENTVolume 4, Issue 1, 2013 pp.73-84 Journal homepage: www.IJEE.IEEFoundation.org Design and development of major balance of plant components in

Ngày tải lên: 05/09/2013, 16:10

... deformation, and solid body modeling Many CAD systems, such as AutoCAD and ProE, have been developed and are in extensive use for design and instruction.Because of the complexity of thermal systems, ... involved and any applicable restrictions on the airflow rate and heater input The materials, dimensions, and geometry are given and are, thus, fixed for the design problem Only the fan and the ... points For instance, a eutectic mixture of 63% tin and 37% lead has a melting point of 183nC and a mixture of 10% tin and 90% lead has a melting range of 275 to 302nC Additions of silver /&)'#

Ngày tải lên: 06/08/2014, 15:20

... character-istics of the system for wide ranges of design variables and operating conditions Because of the coupled nature of these equations and because nonlinear algebraic and differential equations, ... shell and tube heat exchanger, with hot and cold water as the two fluids x L d h g h f W T f (x) T g (x) FIGURE P3.13 Trang 5Modeling of Thermal Systems 201 (c) A system consisting of pumps and ... valid and accurate rep-resentation of the system, the model is subjected to changes in the design variables and operating conditions This process of studying the behavior of the system by means of

Ngày tải lên: 06/08/2014, 15:20

... x0 – i$ and a similar procedure is employed as for increasing x. There are several methods available for the solution of a first-order ODE and thus of higher-order equations and systems of ODEs ... mathematical modeling of thermal systems frequently leads to sets of linear equations The solution of these equations generally involves iteration and combines the strategies for root solving and those for ... internal logic of the program-software By rearranging f(T), polynomial p is given in terms of the coefficients a, b, c, d, and e, in descending powers of T, as: System of Nonlinear Algebraic Equations

Ngày tải lên: 06/08/2014, 15:20

... industry and form the basis for the numerical simulation and design of a variety of thermal systems ranging from electronic packages to air-conditioning and energy systems However, it is important ... and, therefore, this simulation is not often used in the design of thermal systems Electrical circuits used to simulate fluid-flow systems, consisting of pipes, fittings, valves, and pumps, and ... arrangement in an electronic system may be considered as subsystems for model-ing and design Frequently, the subsystems are designed separately and the results obtained are employed in the design of the

Ngày tải lên: 06/08/2014, 15:20

... The dynamic simulation of large systems such as power and steel plants is particularly impor-tant because of changes in demand and in the inputs to the systems Some of these aspects are considered ... of operating conditions to consider design and off-design conditions; and investiga-tion of system behavior for different design parameters Therefore, the validation simu-of the simulation can ... thickness W is an important design variable and substantially affects the solidification time and the temperature of the mold From these results, the casting time at h 20 W/(m 2·K) and W 0.05

Ngày tải lên: 06/08/2014, 15:20

... modeling and simulation, and evaluation of the design for its acceptability are based on the initial design The initial, starting design affects the convergence of the iterative design process and often ... circuitry. Trang 8Library of Previous DesignsAny industry involved with the design of systems and equipment would generally develop many successful designs over a period of time for a variety of applica-tions ... Initial design 4 Modeling of the system 5 Simulation of the system 6 Evaluation of the design 7 Selection of an acceptable design Optimization of the design follows the determination of a domain of

Ngày tải lên: 06/08/2014, 15:20

... configuration and the materials, are held constant, different heat-ers and fans may be considered for the redesign After each change, the design is evaluated in terms of a chosen quantity or parameter ... through initial design, model-ing, and simulation to design evaluation, redesign, and convergence to an accept-able design It has also been seen that thermal systems arise in many diverse FIGURE ... convective heat transfer coefficient, T a is the temperature of the fluid surrounding the cord, R is the radius of the core-mandrel assembly and subscript i refers to the mandrel and the contact

Ngày tải lên: 06/08/2014, 15:20

... FLOW SYSTEMS Fluid flow is an important part of thermal systems because the transport of mass and energy occurs due to the flow of fluids such as refrigerants, combustion products, water, and ... approximations, and idealizations, and to simulate the system for wide ranges of the design variables and operating conditions From these results, an acceptable design that meets the given requirements and ... Am a D b N c (5.26) where A, a, b, and c are constants For further details on fans and their characteristics, see Thompson and Trickler (1983) and Avallone and Baumeister (1987) A compressor

Ngày tải lên: 06/08/2014, 15:20

... use of hollow mandrels is suggested as an improve-ment in the design Consider this change and determine the effect on the simulation and the design However, the thickness of the wall of the mandrel ... W.F (1989) Design of Thermal Systems, 3rd ed., McGraw-Hill, New York Thompson, J.E and Trickler, C.J (1983) Fans and fan systems, Chem Eng., March:46–63 Van Wylen, G.J., Sonntag, R.E., and Borgnakke, ... and small systems and the basic approach presented in this and earlier chapters can easily be applied to a wide range of systems using the principles of modeling, simulation, design, and optimization

Ngày tải lên: 06/08/2014, 15:20

... the financial situation of the company is much better and the company wants to pay off the loan Calculate the amount it has to pay at the end of 5 years to take care of the remaining loan Also, ... delivery and 10 annual payments of $20,000 at the end of each year The salvage value of the new unit is $75,000 and that of the used one is $50,000, both being disposed of at the end of 10 years ... For instance, the company may have problems meeting the ment and may want to reduce the amount by extending the duration of the loan pay-An improvement in the financial status of the company may

Ngày tải lên: 06/08/2014, 15:20

... the diameter and length of the shell in a shell-and-tube heat exchanger Then, any design in this domain is an acceptable or workable design and may be selected for the problem at hand Optimization, ... as functions of the useful lives of the facilities Take the life as 4, 6, and 8 years, and calculate the corresponding rates of return with and out taxes at the rate of 50% of the profit taken ... of buying FIGURE P6.23 Trang 5426 Design and Optimization of Thermal Systemsand maintaining the machine over 10 years If the company wants to take out a fixed amount annually from its income

Ngày tải lên: 06/08/2014, 15:21

... Edition, Revised and Expanded, Earl Logan, Jr. 86. Vibrations of Shells and Plates: Second Edition, Revised and Expanded, Werner Soedel 87. Steam Plant Calculations Manual: Second Edition, Revised and Expanded, ... H. MacNeal 90. Mechanical Properties of Polymers and Composites: Second Edition, Revised and Expanded, Lawrence E. Nielsen and Robert F. Landel 91. Mechanical Wear Prediction and Prevention, Raymond ... Guide, Second Edition, Revised and Expanded, Marsbed H. Hablanian 112. Geometric Dimensioning and Tolerancing: Workbook and Answerbook, James D. Meadows 113. Handbook of Materials Selection for...

Ngày tải lên: 27/06/2014, 17:20