DOCSLIB.ORG

User's Guide for the NREL Force and Loads Analysis Program Version

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
User's Guide for the NREL Force and Loads Analysis Program Version NREL{I'P-257-4674 • UC Category: 261 • DE92010579 User's Guide e NREL Force and Loads Program (FLAP) Version 2.2 Alan D. Wright Q�IE.. !.. • National Renewable Energy Laboratory (formerly the Solar Energy Research Institute) 1617 Cole Boulevard Golden, Colorado 80401-3393 A Division of Midwest Research Institute Operated for the U.S. Department of Energy under Contract No. DE-AC02-83CH10093 August 1992 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, com­ pleteness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily con­ stitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Printed in the United States of America Available from: National Technical Information Service U.S. Department of Commerce 5285 Port Royal Road Springfield, VA 22161 Price: Microfiche A01 Printed Copy A11 Codes are used for pricing all publications. The code is determined by the number of pages in the publication. Information pertaining to t_he pricing codes can be found in the current issue of the following publications which are generally available in most libraries: Energy Research Abstracts (ERA); Govern­ ment ReportsAnnouncements and Index ( GRA and I); Scientific and TechnicalAbstract Reports (STAR); and publication NTIS-PR-360 available from NTIS at the above address. Summary The following report gives the reader an overview of and instructions on the proper use of the National Renewable Energy Laboratory ,Eorce and Loads Analysis �ogram (FLAP, version 2.2). It is intended as a tool for prediction of rotor and blade loads and response for two- or three-bladed rigid hub wind · turbines. The effects of turbulence are accounted fo r. The objectives of thereport are to give an overview of thecode and also show the methodsof datainput and correct code execution steps in order to model an example two-bladed rigid hub turbine. A large por­ tion of the discussion (Sections 6.0, 7.0, and 8.0) is devoted to the subject of inputting and running the code for wind turbulence effects. The ability to include turbulent wind effects is perhaps the biggest change in the code since the release of FLAP version 2.01 in 1988. This report is intended to be a user's guide. It does not contain a theoretical discussion on equations of motion, assumptions, underlying theory, etc. It is intended to be used in conjunction with Wright, Buhl, and Thresher (1988) . � i Hopefully, this report will assist new users in the understanding of code input preparation and correct code execution. "I •f .. I'\' I I .) ···� r iii Table of Contents Summary . ................, . iii Nomenclature . vii 1.0 Introduction . .. .. .. .. .. .. .. .. .. .. .. 1 2.0 Code Overview . 2 i l 3.0 New Code Inputs ......................................·. .. 4 ' i \ ' 4. 0 Example Turbine Description . .. .. .. .. .. .. .. 5 r l 'l ' ' I 5.0 Preparation of Input Data . .. .. .. .. .. .. .. .. .. .. .. 9 6.0 Preparation of Turbulent Wind Input Data. .. .. .. .. .. .. .. .. 14 7.0 Input of Turbu�ence Data to FLAP. : .. .. .. .. .. .. .. .. 15 8.0 Example Interactive Run . .............. ..,) . .. .. .. .. 17 8.1 Module 1-FI...AP1 . .. .. .. .. .. .. .. .. .. .. 17 8.2 Module 2-FI...AP2 . .. .. .. .. .. .. .. 17 1 L' 9.0 Conclusions . .. .. .. .. .. .. .. .. .. .. .. .. .. 19 10.0 References. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 20 11.0 Acknowledgments . .. .. .. .. .. .. .. .. .. .. 21 Appendix A: Module 1 Input File, Interactive Run Listing, and Output Files ..... ....... A-1 Appendix B: Module 2 Interactive Run Listing and Output Files . ....... .. ..... .... B-1 Appendix C: Module 1 Listing ................................. ........... C-1 Appendix D: Module 2 Listing ............................................ D-1 Appendix E: . Modules 1 and 2 Flowcharts. E-1 iv c \ ' \ I � List of Figures 4-1 illustration of example turbine . .. .. .. .. .. .. .. .. .. .. .. 5 r 4- 2 Turbine blade planform, thickness,and twist . .. .. .. .. .. 6 4- 3 Turbine blade stiffness distribution . 6 -1.- I 4- 4 Turbine blade weight distribution . 7 . 4- 5 Liftprofile for the LS(1) airfoil . 7 · l 5-1 illustration of rotor geometry......................................... 10 ·- jI I y i i; - I ! __( � ·-- I 1 - j I. __ _ I v • 1 ; l List of Tables 4- 1 Example Turbine Specifications . , . 8 • 1 i ' �· ' ' 1 • I r-- � : J t_j vi Nomenclature CD Drag coefficient CL Liftcoefficient l deg Degrees I· 1 ft Feet m Meters rad Radians .Q Rotor rotation rate (RPM) t \ \I vii 1.0 Introduction The following report is intended to be a guide for the correct use of the National Renewable Energy Laboratory (NREL) Force and Loads Analysis f_rogram (FLAP, Version 2.2). The original equations of motion that formed the basis for FLAP (version 2.01) have been retained. The main change is the ability to calculate blade response and loads caused by turbulence. Degrees of freedom include four-blade elastic flap modes. A prescribed time-dependent sinusoidal yaw function can be input to the code. The report gives a general overview of the code. A description of new input variables (compared to FLAP version 2.01 of 19 88) is given. Then, an example of a two-bladed, rigid hub wind turbine is described. Preparation of the basic data input file for. this two-bladed turbine is described. Then, the methods of turbulent wind input preparation and input of turbulence to FLAP are explained. Finally, an interactive run session for both modules is illustrated. Code listings and output results are contained in the appendices. 1 2.0 Code Overview FLAP (Eorce and LoadsAnalysis £rogram)analyzes two- or three-bladed rigid hub rotors. Itpredicts blade loads that result from such effects as gravity, windshear, to wer shado w, and turbulent wind fluctuations. Italso predicts shaftloads caused by gravity, windshear, and to wer shado w. Degrees of freedom included in this model are four elastic flap modes for the blade. Blade torsion and edge wise degrees of freedomare not included. The to wer top is assumed to be fixedin space. The model assumes constant rotor speed. Al though machine ya w is not considered to be a degree of freedom,a prescribed time-dependent ya w motion can be input to the code. FLAP is basically a derivative of the force and Loads Analysis £rogram (FLAP;Version 2.01) (Wright, Buhl,and Thresher,19 8 8). This version of FLAP is similar to FLAP 2.01 in that a quasi-steady linear aerodynamic model is used to compute blade aerodynamic forces. The liftis modeled as a linear function of angle of attackup to stall. Past stall, liftis set equal to a constant. The drag is modeled as a quadratic function involving lift coefficient. For more details, see Section 5.0 of Wright, Buhl,and Thresher (19 88). FLAP is composed of two modules (FLAP1 and FLAP 2). The first module is a preprocessor that reads blade and machine property data Itcomputes such items as blade flap wise frequencies andmodeshapes as well as stiffness,mass, coriolis, and other matrices . These quantities are variables thatdo not generally change from one run to the next and, thus,are computed once. Distributed blade properties such as the blade's stiffness, weight, twist,and chord may be read into Module 1 at unevenly spaced points. The input data is then interpolated to form sets of evenly spaced data. Ano ther capability of this module is calculation of the blade's flap wise frequenciesand modeshapes. This information is written to a file for examination by the user. From this information, the user can check the effects of mass and stiffness on blade frequencies and modeshapes. We assume in this version of FLAP that bo th blades have identical mass, stiffness,tw ist, and chord )' distributions. In Module 1, mass, stiffness,and other matrices are calculated for only one blade. The effects of mass,pitch, and twist imbalances are not accounted for in this model. ,[ .. ) The second module (FLAP 2)calculates the blade equations of motion and computes blade and lo w-speed shaftloads. The code calculates the rotor response to such input as gravity, windshear,to wer shado w, ya w misalignment,and ya w rate. The response to these inputs is generally a steady-state one. Thecode i is run wi th initial valuesfor theblade deflection and velocity. Once the blade reaches a steady-state trim . J solution,the blade deflection and loads are calculated and written to a file. The shaftloads are also calculated and written to a separate file. The rotor response and load calculations resulting from time-dependent ya w motion or turbulent wind input is handled differently than the trim case. In those cases, a steady-state trim solution is calculated first,before the code enters the transient portion of the solution process. The results of this trim solution are then used as initialconditions for the transient analysis. After this trim solution is completed,the time clockis started,and the model is run, wi th the ya w function evaluatedat each azimu th position. The ya w­ function values for the initial ya w-angledisplacement, ya w-angle amplitude,and maximum ya w velocity . j are set by the user during the model-run setup. Because the ya w function is given independently of the rotor model, the model solution from one rotor revolution to the next will not be steady state. l I 2 The number of revolutions to be run in the yaw solution is set by the user during run setup.
Load more

Recommended publications
  • Answers to Exercises
    Answers to Exercises A bird does not sing because he has an answer, he sings because he has a song. —Chinese Proverb Intro.1: abstemious, abstentious, adventitious, annelidous, arsenious, arterious, face- tious, sacrilegious. Intro.2: When a software house has a popular product they tend to come up with new versions. A user can update an old version to a new one, and the update usually comes as a compressed file on a floppy disk. Over time the updates get bigger and, at a certain point, an update may not fit on a single floppy. This is why good compression is important in the case of software updates. The time it takes to compress and decompress the update is unimportant since these operations are typically done just once. Recently, software makers have taken to providing updates over the Internet, but even in such cases it is important to have small files because of the download times involved. 1.1: (1) ask a question, (2) absolutely necessary, (3) advance warning, (4) boiling hot, (5) climb up, (6) close scrutiny, (7) exactly the same, (8) free gift, (9) hot water heater, (10) my personal opinion, (11) newborn baby, (12) postponed until later, (13) unexpected surprise, (14) unsolved mysteries. 1.2: A reasonable way to use them is to code the five most-common strings in the text. Because irreversible text compression is a special-purpose method, the user may know what strings are common in any particular text to be compressed. The user may specify five such strings to the encoder, and they should also be written at the start of the output stream, for the decoder’s use.
    [Show full text]
  • Ir^Is*»?.'2R-£
    DENSITY ADD MAGNETIC FIELD MEASUREMENTS IN THE TOHHAC IV-c PLASMA ;.ir^is*»?.'2r-£ John Halter Coonrod, Jr. ^riSSKSss-*"*! Lawrence Berkeley Laboratory Berkeley, California 94720 lO DiSTmm-narLT — -iii- TABLE OF CONTENTS ABSTRACT vii PREFACE ix 1. INTRODUCTION 1 1.1 Tormac Concept 1 1.2 Tormac IV . 5 1.3 Experimental Sequence 5 1.4 Motivation for Tormac IV-c 7 1.5 Diagnostics 9 1.5.1 Table of Typical Tormac IV-c Values . 10 1.6 Questions and Conclusions 11 1.7 References 13 2. EXPERIMENTAL DATA AND ANALYSIS 15 2.1 Data Summary 15 2.2 Overall Picture 16 2.3 Spectral Measurements 17 2.3.1 Reconstruction Technique 18 2.3.4 Problems with Reconstruction ..... 24 2.3.3 Do Profiles and Density 25 2.3.4 He 4686 Profiles and Fluctuations ... 37 2.4 Thomson Scattering 44 2.5 Magnetic Measurements 48 2.5.1 Flux Exclusion 50 2.5.2 Description of Small Probes 55 2.5.3 Small Probe Data 59 2.6 Interferometer Measurements 73 2.6.1 Description and Access 73 2.6.2 Alignment and Calibration Procedure . 77 2.6.3 Analysis Technique 78 2.6.4 Radial Density Profiles 79 2.7 Overall Particle Accounting ... 79 2.8 References 105 3. EXPERIMENT LAYOUT AND CONSTRUCTION 107 3.1 Glass Vessel 107 3.2 Cusp Winding 110 3.3 Cusp Bank and Switches 113 3.4 Bias Circuit 116 3.5 Pre-ionize Circuit 116 3.6 Heater Circuit 117 3.7 Floor Plan 118 3.8 Vacuum System 118 3.9 Safety Interlocks 122 3.10 References 123 -iv- 4.
    [Show full text]
  • Lawrence Berkeley National Laboratory Lawrence Berkeley National Laboratory
    Lawrence Berkeley National Laboratory Lawrence Berkeley National Laboratory Title SOFTWARE CATALOG Permalink https://escholarship.org/uc/item/7vp4q4x1 Author Beyers, Evelyn Publication Date 2013-06-27 eScholarship.org Powered by the California Digital Library University of California LBL·l 081 1 <! . UC-4 NATIONAL RESOURCE FOR COMPUTATION "--"" IN CHEMISTRY TWO-WEEK LOAN COPY This is a Library Circulating Copy wh may be borrowed for two weeks. For a retention copy, call Tech. Divisiony Ext. 6782. Vol. 1 February 1 for the U.S. Department of under Contract W-7405-ENG-48 and the National Science Foundation under Agreement CHE-7721305 DISCLAIMER This document was prepared as an account of work sponsored by the United States Govemment. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor the Regents of the University of California, nor any of their employees, makes any wan·anty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by its trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Govemment or any agency thereof, or the Regents of the University of Califomia. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof or the Regents of the University of California.
    [Show full text]
  • 04 Pascal Newsletter July 1976
    .-:'a· July 1976 PASCAL NEWSLETTER Number 4 FROM THE EDITOR The fourth newsletter is long qverdue, the third being published in February 1975. There have been many significant events that need announcing. The highlights are: Release 2 of PASCAL 6000-3.4 has beeh made available by Dr. Urs Ammann at Eiqgenossische Technische Hochschule in Zurich, Switzerland. It is also available from Mr. George Richmond at the University of Colorado Computing Center in Boulder, Colorado and Mr. Carroll Morgan at the Basser Department of Computer Science, University of Sydney, Australia. Many improvements have been made over Release 1 and future developments are promised. See page 73. Mr. Carroll Morgan of the Basser Department of Computer Science at the University of Sydney, Australia has kindly agreed to distribute ETH Pascal and portable Pascal for Australia and neighboring regions. Interested parties should contact Mr. Morgan for more informa~ion. Mr. Andy Mickel of the University of Minnesota kindly agreed to take over editorial control and publication of the Pascal Newsletter commencing wi'th issue Number 5 in September 1976. He is also organizing a User's Group. See pages 88 and 89. An improved portable Pascal has been released from ETH, , zur ich. See page 81. News of Pascal compilers for numerous machines has been received. See pages 96 and following. An expanded bibliography .of Pascal literature has. been compiled. See pages 100 and following. I have enjoyed producing the first four newsletters but I have found it to be very time consuming. I am grateful to Andy for taking over these duties with enthusiasm.
    [Show full text]
  • Appendix a Information Theory
    Appendix A Information Theory This appendix serves as a brief introduction to information theory, the foundation of many techniques used in data compression. The two most important terms covered here are entropy and redundancy (see also Section 2.3 for an alternative discussion of these concepts). A.1 Information Theory Concepts We intuitively know what information is. We constantly receive and send information in the form of text, sound, and images. We also feel that information is an elusive nonmathematical quantity that cannot be precisely defined, captured, or measured. The standard dictionary definitions of information are (1) knowledge derived from study, experience, or instruction; (2) knowledge of a specific event or situation; intelligence; (3) a collection of facts or data; (4) the act of informing or the condition of being informed; communication of knowledge. Imagine a person who does not know what information is. Would those definitions make it clear to them? Unlikely. The importance of information theory is that it quantifies information. It shows how to measure information, so that we can answer the question “how much information is included in this piece of data?” with a precise number! Quantifying information is based on the observation that the information content of a message is equivalent to the amount of surprise in the message. If I tell you something that you already know (for example, “you and I work here”), I haven’t given you any information. If I tell you something new (for example, “we both received a raise”), I have given you some information. If I tell you something that really surprises you (for example, “only I received a raise”), I have given you more information, regardless of the number of words I have used, and of how you feel about my information.
    [Show full text]
  • 08 Pascal Newsletter May 1977
    PASCAL USER'S GROUP USER'S GROUP PASCALNEWSLETTER NUMBER 8 COMMUNICATIONS ABOUT THE PROGRAMMING LANGUAGE PASCAL BY PASCALERS MAY} 1977 TAB LEO F CON TEN T S # a POLICY .EDITOR'S CONTRIBUTION ..... "# # 2 HERE AND TffEREWITH PASCAL. * 2 News .'.* . 3 Conferences # 6 Books and Articles # * 7 Applications * # 8 ARTICLES * 8 "Development of a Pascal Compiler for the C. I.1. IRIS 50. A Parti al History. II # '. .. Olivier Lecarme # * * 11 "A Further Defence of Formatted Iriput" '" # # .c'.' .' " - B. A. E. 'Meeki ngs ~" 'J' ; .,* 12 ilPt6~6:~al S fo~P:~~ca 1" * # . - heorge H. Richmond # 15 "A Proposal for Increased Security in the Use of Variant * Records"- William Barabash, Charles R. Hill, and * # Richard B. Kieburtz . # * 16 "Update on UCSD Pascal, Activities" * #' - Kenneth L. Bowl es * 18 # 19 * 22 # 40 40 * 40 # 40 " 40 * 42 * # 44 / # * 64 * # 65 ALL PURPOSE COUPON "'.~SCl~L USER 'S GROUP POLl (1 ES Purposes - are to promote the use of the programming language Pascal as well as the ideas behind Pascal. Pascal is a practical, general purpose language \,/ith a small and systematic structure being used for: ' * teaching programming concepts . * developing reliable "production" software * implementing software efficiently on today's machines * writing portable software Membership - is open to anyone: particularly the Pasc~l user, teacher, maihtainer, I impl ementor, di stributor, or just pl ai nfan. Institutional membershi ps, ' especially libraries, are encouraged. Membership is per academic year end~ June 30. Anyone joining for a particular year will receivea1l 4 quarterl} issues of FMC.a£. NeLIJI.>R.e:Ue.1t for that year. {In other words, back issues ar sent automatically.} First time members receive a receipt for membership; renewers do not to save PUG postage.
    [Show full text]
  • Data Compression
    Razi University Data Compression Department of Computer Engineering Razi University Dr. Abdolhossein Fathi References and Evaluation Razi University Textbook: Khalid Sayood, “Introduction to Data Compression”, Fifth Edition, Morgan Kaufmann Publishers, 2017. Ida Mengyi Pu, “Fundamental Data Compression”, First Edition, Oxford, 2006. David Salomon and Giovanni Motta, “Handbook of Data Compression”, Fifth Edition, Springer, 2010. Score Details: Presentation 15% Implementation Project 15% Final Exam 70% Dr. A. Fathi, Data Compression 2 Contents Razi University Basic Concepts in the Information Theory Basic Compression Methods Statistical Based Compression Methods Dictionary Based Compression Methods Transform Based Compression Methods Image Compression Audio Compression Video Compression Your presentation is explanation of a new methods in the medical image compression (each of yours one new paper last two years ago). Your project is analyzing and enhancement of the selected paper along with implementation of enhanced version of it. Dr. A. Fathi, Data Compression 3 Razi University Basic Concepts in the Information Theory Data Compression Razi University Data compression, in the context of computer science, is the science (and art) of representing information in a compact form to: Conserve storage space Reduce time for transmission Faster to encode, send, then decode than to send the original Progressive transmission Some compression techniques allow us to send the most important bits first so we can get a low resolution version of some data before getting the high fidelity version Reduce computation Use less data to achieve an approximate answer Dr. A. Fathi, Data Compression 5 What is Data and Information Razi University Data and information are not synonymous terms! Data is the means by which information is conveyed.
    [Show full text]
  • Pascal News NUMBER 21
    PASCAL USERS GROUP Pascal News NUMBER 21 COMMUNICATIONS ABOUT THE PROGRAMMING LANGUAGE PASCAL BY PASCALERS APR I l., 19.81 If this isn't APRIL ... ~( does that mean we're late 7 - ;' POLICY: PASCAL NEWS (15-Sep-80) *Pascal News is the official but informal publication of the User's Group. * Pascal News contains all we (the editors) know about Pascal; we use it as the vehicle to answer all inquiries because our physical energy and resources for answering individual requests are finite. As PUG grows, we unfortunately ~uccumb to the reality of: l. Having to insist that people who need to know "about Pascal" join PUG and read Pascal News - that is why we spend time to produce it! 2. Refusing to return phone calls ·or answer letters full of questions - we will pass the questions on to the readership of Pascal News. Please understand what the collective effect of individual inquiries has at the "concentrators" (our phones and mailboxes). We are trying honestly to say: "We cannot promise more that we can do." * Pascal News is produced 3 or 4 times during a year; usually in March, June, September;-and December. * ALL THE NEWS THAT 1 S FIT, WE PRINT. Please send material (brevity is a virtue) for Pascal News single-spaced and camera-ready (use dark ribbon and 18.5 cm lines!) -- ~ * Remember: ALL LETTERS TO US WILL BE PRINTED UNLESS THEY CONTAIN A REQUEST u TO THE CONTRARY. ·­ * Pascal News is divided into flexible sections: -0 POLICY - explains the way we do things (ALL-PURPOSE COUPON, etc.) EDITOR'S CONTRIBUTION - passes along the opinion and point of view of the ll.
    [Show full text]
  • P Ascalnewsletter
    PASCAL USER'S GROUP USER'S GROUP PASCALNEWSLETTER NUMBER 8 COMMUNICATIONS ABOUT THE PROGRAMMING LANGUAGE PASCAL BY PASCALERS MAY} 1977 TAB LEO F CON TEN T S # a POLICY .EDITOR'S CONTRIBUTION ..... "# # 2 HERE AND TffEREWITH PASCAL. * 2 News .'.* . 3 Conferences # 6 Books and Articles # * 7 Applications * # 8 ARTICLES * 8 "Development of a Pascal Compiler for the C. I.1. IRIS 50. A Parti al History. II # '. .. Olivier Lecarme # * * 11 "A Further Defence of Formatted Iriput" '" # # .c'.' .' " - B. A. E. 'Meeki ngs ~" 'J' ; .,* 12 ilPt6~6:~al S fo~P:~~ca 1" * # . - heorge H. Richmond # 15 "A Proposal for Increased Security in the Use of Variant * Records"- William Barabash, Charles R. Hill, and * # Richard B. Kieburtz . # * 16 "Update on UCSD Pascal, Activities" * #' - Kenneth L. Bowl es * 18 # 19 * 22 # 40 40 * 40 # 40 " 40 * 42 * # 44 / # * 64 * # 65 ALL PURPOSE COUPON "'.~SCl~L USER 'S GROUP POLl (1 ES Purposes - are to promote the use of the programming language Pascal as well as the ideas behind Pascal. Pascal is a practical, general purpose language \,/ith a small and systematic structure being used for: ' * teaching programming concepts . * developing reliable "production" software * implementing software efficiently on today's machines * writing portable software Membership - is open to anyone: particularly the Pasc~l user, teacher, maihtainer, I impl ementor, di stributor, or just pl ai nfan. Institutional membershi ps, ' especially libraries, are encouraged. Membership is per academic year end~ June 30. Anyone joining for a particular year will receivea1l 4 quarterl} issues of FMC.a£. NeLIJI.>R.e:Ue.1t for that year. {In other words, back issues ar sent automatically.} First time members receive a receipt for membership; renewers do not to save PUG postage.
    [Show full text]
  • HARDWARE PROGRAM SIMULATOR by Zainalabedin Navabi a Thesis Submitted to the Faculty of the DEPARTMENT of ELECTRICAL ENGINEERING
    Hardware program simulator Item Type text; Thesis-Reproduction (electronic) Authors Navabi, Zainalabedin, 1952- Publisher The University of Arizona. Rights Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. Download date 07/10/2021 18:13:39 Link to Item http://hdl.handle.net/10150/347446 HARDWARE PROGRAM SIMULATOR by Zainalabedin Navabi V A Thesis Submitted to the Faculty of the DEPARTMENT OF ELECTRICAL ENGINEERING In Partial Fulfillment of the Requirements For the Degree of MASTER OF SCIENCE In the Graduate College THE UNIVERSITY OF ARIZONA - 1 9 7 8 STATEMENT BY AUTHOR This thesis has been submitted in partial fulfill­ ment of requirements for an advanced degree at The University of Arizona and is deposited in the University Library to be made available to borrowers under rules of the Library. Brief quotations from this thesis are allowable without special permission, provided that accurate acknowl­ edgment of source is made. Requests for permission for extended quotation from or reproduction of this manuscript in whole or in part may be granted by the head of the major department or the Dean of the Graduate College when in his judgment the proposed use of the material is in the inter­ ests of scholarship. in all other instances, however, permission must be obtained from the author. APPROVAL BY "THESIS DIRECTOR This thesis has been approved on the date shown below: arc FREDERICK' J, HILL Date bfessor of Electrical Engineering ACKNOWLEDGMENTS The author wishes to express his appreciation to Dr.
    [Show full text]
  • "Testing & Packaging of Scientific & Engineering Software to Achieve
    - - . ,. % TESTING AND PACKAGING OF SCIENTIFIC AND ENGINEERING SOFTk'ARE TO AC"IEVE PORIABILITY* M. K. Butler, H. S. Edward s, L. R. Eyberger, P.1. Johnson, M. Legan, L. L. Reed, and A. J. Strecok National Energy Software Center Argonne National Laboratory Argonne, IL 60439 The National Energy Software Center (NESC) is c software exc!'ange and information center operated by Argonne National Laboratory for the U. S. Department of Energy (DOE), with support from the Nuclear Regulatory Commission. The major objectives of the NESC program are: o to promote the sharing of co=puter software among agency offices and contractors, o to facilitate the transfer of agency-developed conputer applications and technology to the information processing co=munity, and o to provide the focal point for DOE software exchange arrangements with other government agencies and for coordination of DOE acquisition of non-government software. HISTORY The Center is the successor to the Argonne Code Center, originally established by the U. S. Atomic Energy Co==ission in 1960 in response to a proposal by the Mathematics and Computation Division of the American Nuclear Society for a center dedicated to the collection and exchange of information on nuclear reactor codes. The Code Center operated initially as an adjunct to the Laboratory's Applications Programming activity, utilizing the major computer manufacturers' library facilities for , reproduction and distribution of designated program package material, and professional society services for disse =ination of abstracts describing the , software collection and other information. Beginning in 1965 the Reactor i Physics Branch of the AEC's Division of Reactor Development and Technology provided the direct funding to permit .he development of independent Center sof tware library ar.d information dissemination capabilities.
    [Show full text]
  • Study of Ephemeris Accuracy of the Minor Planets
    LMSC-0420943 27 APRIL 1974 NASA CR-132455 STUDY OF EPHEMERIS ACCURACY OF THE MINOR PLANETS (NASA-CR-132455) STUDY OF EPHEMERIS N74-32264 ACCURACY OF THE MINOR PLANETS (Lockheed Missiles and Space Co.) 173 p HC $11.75 CSCL 03B Unclas G3/30 46739 STUDY PERFORMED UNDER CONTRACT NAS111609, 0 For NASA-LANGLEY RESEARCH CENTER HAMPTON, VIRGINIA Prepared by SPACE SYSTEMS DIVISION LOCKHEED MISSILES & SPACE COMPANY, INC. (A SUBSIDIARY OF LOCKHEED AIRCRAFT CORPORATION) SUNNYVALE, CALIFORNIA 94088 LMSC-D420943 27 April 1974 NASA CR-132455 STUDY OF EPHEMERIS ACCURACY OF THE MINOR PLANETS Study Performed Under Contract NAS1-11609 For NASA-Langley Research Center Hampton, Virginia Prepared by Space Systems Division LOCKHEED MISSILES & SPACE COMPANY, INC. (A Subsidiary of Lockheed Aircraft Corporation) Sunnyvale, California 94088 LOCKHEED MISSILES & SPACE COMPANY LMSC-D420943 FOREWORD The study described in this report was conducted by Lockheed Missiles & Space Company, Inc. (LMSC) for Langley Research Center, National Aeronautics and Space Administration, Hampton, Virginia, under Contract NAS1-11609. The study was conducted under the direction of D. R. Brooks of the Space Technology Division. L. E. Cunningham, Professor of Astronomy at the University of California, Berkeley, contributed signifi- cantly to the effort under a consulting agreement with LMSC. iii O DING PAGE BLANK NOT FILMED LOCKHEED MISSILES & SPACE COMPANY LMSC-D420943 CONTENTS Section Page FOREWORD iii 1 INTRODUCTION AND SUMMARY 1-1 2 HISTORICAL PROCEDURES 2-1 2.1 Astronomical Position
    [Show full text]