Diet of Worms
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Evolution of the Rendezvous-Maneuver Plan for Lunar-Landing Missions
NASA TECHNICAL NOTE NASA TN D-7388 00 00 APOLLO EXPERIENCE REPORT - EVOLUTION OF THE RENDEZVOUS-MANEUVER PLAN FOR LUNAR-LANDING MISSIONS by Jumes D. Alexunder und Robert We Becker Lyndon B, Johnson Spuce Center ffoaston, Texus 77058 NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON, D. C. AUGUST 1973 1. Report No. 2. Government Accession No, 3. Recipient's Catalog No. NASA TN D-7388 4. Title and Subtitle 5. Report Date APOLLOEXPERIENCEREPORT August 1973 EVOLUTIONOFTHERENDEZVOUS-MANEUVERPLAN 6. Performing Organizatlon Code FOR THE LUNAR-LANDING MISSIONS 7. Author(s) 8. Performing Organization Report No. James D. Alexander and Robert W. Becker, JSC JSC S-334 10. Work Unit No. 9. Performing Organization Name and Address I - 924-22-20- 00- 72 Lyndon B. Johnson Space Center 11. Contract or Grant No. Houston, Texas 77058 13. Type of Report and Period Covered 12. Sponsoring Agency Name and Address Technical Note I National Aeronautics and Space Administration 14. Sponsoring Agency Code Washington, D. C. 20546 I 15. Supplementary Notes The JSC Director waived the use of the International System of Units (SI) for this Apollo Experience I Report because, in his judgment, the use of SI units would impair the usefulness of the report or I I result in excessive cost. 16. Abstract The evolution of the nominal rendezvous-maneuver plan for the lunar landing missions is presented along with a summary of the significant developments for the lunar module abort and rescue plan. A general discussion of the rendezvous dispersion analysis that was conducted in support of both the nominal and contingency rendezvous planning is included. -
Closed-Form Optimal Impulsive Control of Spacecraft Relative Motion Using Reachable Set Theory
Closed-Form Optimal Impulsive Control of Spacecraft Relative Motion Using Reachable Set Theory Michelle Chernick ∗ and Simone D’Amico † Stanford University, Stanford, California, 94305 This paper addresses the spacecraft relative orbit reconfiguration problem of minimizing the delta-v cost of impulsive control actions while achieving a desired state in fixed time. The problem is posed in relative orbit element (ROE) space, which yields insight into relative motion geometry and allows for the straightforward inclusion of perturbations in linear time- variant form. Reachable set theory is used to translate the cost-minimization problem into a geometric path-planning problem and formulate the reachable delta-v minimum, a new metric to assess optimality and quantify reachability of a maneuver scheme. Next, this paper presents a methodology to compute maneuver schemes that meet this new optimality criteria and achieve a prescribed reconfiguration. Though the methodology is applicable to any linear time-variant system, this paper leverages a state representation in ROE to derive new globally optimal maneuver schemes in orbits of arbitrary eccentricity. The methodology is also used to generate quantifiably sub-optimal solutions when the optimal solutions are unreachable. Further, this paper determines the mathematical impact of uncertainties on achieving the desired end state and provides a geometric visualization of those effects on the reachable set. The proposed algorithms are tested in realistic reconfiguration scenarios and validated in a high-fidelity simulation environment. I. Introduction istributed space systems enable advanced missions in fields such as astronomy and astrophysics, planetary science, Dand space infrastructure by employing the collective usage of two or more cooperative spacecraft. -
Pronunciation for Singers : with Especial Reference to the English, German, Italian, and French Languages; with Numerous Example
PRONUNCIATION FOR SINGERS. PRONUNCIATION FOR SINGERS. WITH ESPECIAL REFERENCE TO THE anft i0|r, fernm, Jtalxan, Jfmittr WITH NUMEROUS EXAMPLES AND EXERCISES FOR THE USE OF TEACHERS AND ADVANCED STUDENTS. ALEXANDER J. ELLIS, B.A., LITT.D., F.R.S., F.S.A., F.C.P.S., F.C.P., Late Viet- President (formerly President) of the Philological Society, Member of the Mathematical Society, Member of the Musical Association, Honorary Member of the Council of the Tonic Sol-fa College, Scholar " Formerly of Trinity College, Cambridge. " Author of Early English Pronunciation" Translator of HELMHOLTZ'S Sensations of Tone" J. CURWEN & SONS, 8 & 9 WARWICK LANE, E.G. ici ls& Shillings and Sixpence. LONDON : J. CTJRWEN & SONS, MUSIC PEINTER8, PLAISTOW, B. CONTENTS. The letters a, 6, following the number of the page indicate first and second columns respectively. Preface, p. x. Quality of Tone of the Singing Voice, p. 9*. Vowel Quality of Tone due to Resonance, p. 10a. on the Nature of Vowel Qualities of SECTION I. Speaking and Singing Contrasted, Experiments Tone, p. 10*. pp. 1-6. Singers and Speakers, p. la. SECTION III. Short Key to Glossic, Diagrams. la. (1) Singing and Speaking differ in Compass, p. Systematic Arrangement of Speech -sounds, (2) Singing is at Sustained, Speaking at Gliding pp. 12-17. Pitch, p. H. Description of the following Tables, p. 120. (3) Singing requires a Clear, Speaking an Impeded English Glossic. p. 120, b. Passage for the Breath, p. 2. Foreign Glossic, p. 130, b. (4) Singing has to be Rapid or Slurred, where Diagrams of Positions for Vowels and Consonants, Speaking cannot be so, p. -
Simulation Framework for Orbit Propagation and Space Trajectory Visualization
Simulation Framework for Orbit Propagation and Space Trajectory Visualization 1 Abolfazl Shirazi Basque Center for Applied Mathematics BCAM, Bilbao, 48009, Spain University of the Basque Country UPV/EHU, Donostia, 20018, Spain 2 Josu Ceberio Intelligent Systems Group, University of the Basque Country UPV/EHU, Donostia, 20018, Spain 3 Jose A. Lozano Basque Center for Applied Mathematics BCAM, Bilbao, 48009, Spain University of the Basque Country UPV/EHU, Donostia, 20018, Spain Abstract In this paper, an interactive tool for simulation of satellites dynamics and autonomous spacecraft guidance is presented. Different geopotential models for orbit propagation of Earth-orbiting satellites are provided, which consider Earth’s gravitational field with var- ious accuracies. The presented software is a 3D visualization platform for space orbit simulation with analytical capabilities through various modules. Taking advantage of a graphical user interface, it can evaluate, analyze and illustrate the motion of satellite based on different orbit propagation schemes. Several cases of satellites and autonomous space- craft in the space rendezvous mission are simulated regarding different propagation models to demonstrate the performance of the application in space mission analysis, ground track visualization and trajectory optimization. Results are validated by comparing with other state-of-the-art tools, such as AGI System Toolkit (STK). Keywords: Orbit Simulation, Software Development, Visualization, Modeling, Spacecraft Dynamics 1. Introduction Modeling and simulation of autonomous spacecraft have made momentous strides in recent years, and the space industry, and other aerospace professions are on the verge of being able to use computing power. The aim of this usage is to simulate reality for all kinds of applications in space engineering such as autonomy of nanosatellites [1], flight simulation [2], space object registration [3], and orbit propagation [4]. -
Vilani Grammar and Glossary (“SSA”) 4.4
Seribaasagi Sekekishe Amshuushin (SSA) Vilani Grammar and Glossary (“SSA”) 4.4 Traveller Science-Fiction Adventure in the Far Future Far Future Enterprises CREDITS Marc Miller Contributors: Many people have contributed to this grammar and its setting of use. Particular thanks go to G. “Kashkanun” Andersen, Rob Day, Rob Eaglestone, Eric Evans, Jo Grant, Rob Miracle, and Jeff Zeitlin, not to mention our Vilani scribe Kenji Schwartz. Shalena in bagaan. Vilani Grammar and Glossary Traveller Copyright@ 2016, by Far Future Enterprises All Rights Reserved. Printed in United States of America. No part of this book may be reproduced in any form or by any means without permission in writing from the publisher. This booklet is a supplement to Traveller, FFE's science-fiction role-playing game set in the far future. Traveller is FFE's trademark for its science-fiction role playing game materials. Far Future Enterprises 1418 N Clinton Blvd Bloomington, IL 61701 USA A service of the Seribaasagi Sekekishe Amshuushin (SSA) under the auspices of the Surakhidigi Lamaska Kiiregamukdapin/Anginuurgi Durmezide (SLK/AD). Far Future Enterprises The SSA owes the deepest debt of gratitude to Estate of the Archduke of Vland Biilurashashshishiishe Sishishe Guzulakhidi Bilanidin (The Official Vilani Bureau for the Enforcement of Approved Language Consistency) Akhabiilursirurkhinegi Silase Guzulakhidi Bilanidin (The Official Vilani Bureau for the Creation of Approved Vocabulary Additions). Special thanks to Surasishiishe Lamaska Sisekhe Kaari (The Society for the Preservation of Old High Vilani) DISCLAIMER The publisher is released from all harm coming from misuse of this document; also from any legal entanglements from misunderstandings caused by misusing the Vilani language. -
An Assessment of the Technology of Automated Rendezvous and Capture in Space
National Aeronautics and NASA/TP—1998 –208528 Space Administration AT01S George C. Marshall Space Flight Center Marshall Space Flight Center, Alabama 35812 An Assessment of the Technology of Automated Rendezvous and Capture in Space M.E. Polites Marshall Space Flight Center, Marshall Space Flight Center, Alabama July 1998 The NASA STI Program Office…in Profile Since its founding, NASA has been dedicated to • CONFERENCE PUBLICATION. Collected the advancement of aeronautics and space papers from scientific and technical conferences, science. The NASA Scientific and Technical symposia, seminars, or other meetings sponsored Information (STI) Program Office plays a key or cosponsored by NASA. part in helping NASA maintain this important role. • SPECIAL PUBLICATION. Scientific, technical, or historical information from NASA programs, The NASA STI Program Office is operated by projects, and mission, often concerned with Langley Research Center, the lead center for subjects having substantial public interest. NASA’s scientific and technical information. The NASA STI Program Office provides access to the • TECHNICAL TRANSLATION. NASA STI Database, the largest collection of English-language translations of foreign scientific aeronautical and space science STI in the world. The and technical material pertinent to NASA’s Program Office is also NASA’s institutional mission. mechanism for disseminating the results of its research and development activities. These results Specialized services that complement the STI are published by NASA in the NASA STI Report Program Office’s diverse offerings include creating Series, which includes the following report types: custom thesauri, building customized databases, organizing and publishing research results…even • TECHNICAL PUBLICATION. Reports of providing videos. completed research or a major significant phase of research that present the results of NASA For more information about the NASA STI Program programs and include extensive data or Office, see the following: theoretical analysis. -
A Summary of the Rendezvous, Proximity Operations, Docking, And
NASA/TM-2011-217088 NESC-RP-10-00628 A Summary of the Rendezvous, Proximity Operations, Docking, and Undocking (RPODU) Lessons Learned from the Defense Advanced Research Project Agency (DARPA) Orbital Express (OE) Demonstration System Mission Cornelius J. Dennehy/NESC Langley Research Center, Hampton, Virginia J. Russell Carpenter Goddard Space Flight Center, Greenbelt, Maryland April 2011 NASA STI Program . in Profile Since its founding, NASA has been dedicated to • CONFERENCE PUBLICATION. Collected the advancement of aeronautics and space science. papers from scientific and technical The NASA scientific and technical information (STI) conferences, symposia, seminars, or other program plays a key part in helping NASA maintain meetings sponsored or co-sponsored by NASA. this important role. • SPECIAL PUBLICATION. Scientific, The NASA STI program operates under the technical, or historical information from NASA auspices of the Agency Chief Information Officer. It programs, projects, and missions, often collects, organizes, provides for archiving, and concerned with subjects having substantial disseminates NASA’s STI. The NASA STI program public interest. provides access to the NASA Aeronautics and Space Database and its public interface, the NASA Technical • TECHNICAL TRANSLATION. English- Report Server, thus providing one of the largest language translations of foreign scientific and collections of aeronautical and space science STI in technical material pertinent to NASA’s mission. the world. Results are published in both non-NASA channels and by NASA in the NASA STI Report Specialized services also include creating custom Series, which includes the following report types: thesauri, building customized databases, and organizing and publishing research results. • TECHNICAL PUBLICATION. Reports of completed research or a major significant phase For more information about the NASA STI of research that present the results of NASA program, see the following: programs and include extensive data or theoretical analysis. -
Folk Culture of Assam : Meaning and Importance 36-54
GHT S6 02(M) Exam Codes: HTM6B CULTURAL HISTORY OF ASSAM SEMESTER - VI HISTORY BLOCK - 1 KRISHNA KANTA HANDIQUI STATE OPEN UNIVERSITY Subject Expert 1. Dr. Sunil Pravan Baruah, Retd. Principal, B.Barooah College, Guwahati 2. Dr. Gajendra Adhikari, Principal, D.K.Girls’ College, Mirza 3. Dr. Maushumi Dutta Pathak, HOD, History, Arya Vidyapeeth College, Guwahati Course Co-ordinator : Dr. Priti Salila Rajkhowa, Asst. Prof. (KKHSOU) SLM Preparation Team UNITS CONTRIBUTORS 1 & 2 Dr. Mamoni Sarma, L.C.B. College 3 Dr. Dhanmoni Kalita, Bijni College 4 & 5 Mitali Kalita, Research Scholar, G.U 6 Dr. Sanghamitra Sarma Editorial Team Content Editing: Dr Moushumi Dutta Pathak, Department of History, Arya Vidyapeeth College Dr. Priti Salila Rajkhowa, Department of History, KKHSOU Structure, Format & Graphics : Dr. Priti Salila Rajkhowa, KKHSOU December , 2019 © Krishna Kanta Handiqui State Open University. This Self Learning Material (SLM) of the Krishna Kanta Handiqui State Open University is made available under a Creative Commons Attribution-NonCommercial-ShareAlike4.0 License (international): http://creativecommons.org/licenses/by-nc-sa/4.0/ Printed and published by Registrar on behalf of the Krishna Kanta Handiqui State Open University. Head Office : Patgaon, Rani Gate, Guwahati-781017 City Office : Housefed Complex, Dispur, Guwahati-781 006; Web: www.kkhsou.in The University acknowledges with thanks the financial support provided by the Distance Education Council, New Delhi, for the preparation of this study material. BACHELOR OF ARTS CULTURAL HISTORY OF ASSAM DETAILED SYLLABUS BLOCK - 1 PAGES UNIT 1 : Assamese Culture and Its Implication 5-23 Definition of Culture; Legacy of Assamese Culture; Interpretations and Problems UNIT 2 : Assamese Culture and Its Features 24-35 Assamese Culture and its features: Assimilation and Syncretism UNIT 3 : Folk Culture of Assam : Meaning and Importance 36-54 Meaning and Definition of Folk Culture; Relation to the Society; Tribal Culture vs. -
Dr. Öğr. Üyesi Cuma YARIM U
ISTANBUL TECHNICAL UNIVERSITY FACULTY OF AERONAUTICS AND ASTRONAUTICS DEVELOPMENT OF A RENDEZVOUS AND DOCKING SIMULATION GRADUATION PROJECT Utkan GÜDER Department of Astronautical Engineering Thesis Advisor: Dr. Öğr. Üyesi Cuma YARIM MARCH, 2021 ISTANBUL TECHNICAL UNIVERSITY FACULTY OF AERONAUTICS AND ASTRONAUTICS DEVELOPMENT OF A RENDEZVOUS AND DOCKING SIMULATION GRADUATION PROJECT Utkan GÜDER (110140129) Department of Astronautical Engineering Thesis Advisor: Dr. Öğr. Üyesi Cuma YARIM MARCH, 2021 ii Utkan Güder, student of ITU Faculty of Aeronautics and Astronautics student ID 110140129, successfully defended the graduation entitled “DEVELOPMENT OF A RENDEZVOUS AND DOCKING SIMULATION”, which he prepared after fulfilling the requirements specified in the associated legislations, before the jury whose signatures are below. Thesis Advisor : Dr. Öğr. Üyesi Cuma YARIM .............................. İstanbul Technical University Jury Members : Date of Submission : 10.06.2021 Date of Defense : iii FOREWORD Even though my main interests have shifted towards software programming and computer graphics over the years of being an astronautical student, I have always been interested in orbital mechanics since I have began studying. Hence the topic of my thesis that I hope someone will find it useful or inspiring, although I have worked full-time while writing it. March 2021 Utkan Güder iv TABLE OF CONTENTS Page FOREWORD ............................................................................................................. iv TABLE OF CONTENTS -
Safe Spacecraft Rendezvous and Proximity Operations Via Reachability Analysis
Air Force Institute of Technology AFIT Scholar Theses and Dissertations Student Graduate Works 3-2021 Safe Spacecraft Rendezvous and Proximity Operations via Reachability Analysis Paul A. Grossi Follow this and additional works at: https://scholar.afit.edu/etd Part of the Aerospace Engineering Commons Recommended Citation Grossi, Paul A., "Safe Spacecraft Rendezvous and Proximity Operations via Reachability Analysis" (2021). Theses and Dissertations. 4977. https://scholar.afit.edu/etd/4977 This Thesis is brought to you for free and open access by the Student Graduate Works at AFIT Scholar. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of AFIT Scholar. For more information, please contact [email protected]. Safe Spacecraft Rendezvous and Proximity Operations via Reachability Analysis THESIS Paul A. Grossi, Captain, USSF AFIT-ENY-MS-21-M-302 DEPARTMENT OF THE AIR FORCE AIR UNIVERSITY AIR FORCE INSTITUTE OF TECHNOLOGY Wright-Patterson Air Force Base, Ohio Distribution Statement A. APPROVED FOR PUBLIC RELEASE: DISTRIBUTION UNLIMITED. The views expressed in this document are those of the author and do not reflect the official policy or position of the United States Air Force, the United States Department of Defense or the United States Government. This material is declared a work of the U.S. Government and is not subject to copyright protection in the United States. AFIT-ENY-MS-21-M-302 SAFE SPACECRAFT RENDEZVOUS AND PROXIMITY OPERATIONS VIA REACHABILITY ANALYSIS THESIS Presented to the Faculty Department of Aeronautics & Astronautics Graduate School of Engineering and Management Air Force Institute of Technology Air University Air Education and Training Command in Partial Fulfillment of the Requirements for the Degree of Master of Aeronautical Engineering Paul A. -
Megjelent a Folia Uralica Debreceniensia
FOLIA URALICA DEBRECENIENSIA 26. Szerkesztette: Maticsák Sándor Keresztes László Debreceni Egyetemi Kiadó Debrecen University Press 2019 A DEBRECENI EGYETEM FINNUGOR NYELVTUDOMÁNYI TANSZÉKÉNEK LEKTORÁLT KIADVÁNYA Szerkesztőbizottság: Csúcs Sándor (Budapest) Riho Grünthal (Helsinki) Honti László (Budapest) Lars-Gunnar Larsson (Uppsala) Harri Mantila (Oulu) Sirkka Saarinen (Turku) Tõnu Seilenthal (Tartu) Eberhard Winkler (Göttingen) A tanulmányokat lektorálta: Csepregi Márta (Budapest), Csúcs Sándor (Piliscsaba), Hoffmann István (Debrecen), Kelemen Ivett (Debrecen), Keresztes László (Debrecen), Petteri Laihonen (Jyväskylä), Lars-Gunnar Larsson (Uppsala), Maticsák Sándor (Debrecen), Maria Sarhemaa (Debrecen), Sipos Mária (Budapest), Sipőcz Katalin (Szeged), Szeverényi Sándor (Szeged), Teperics Károly (Debrecen), Zaicz Gábor (Piliscsaba) ISSN 0239-1953 © A szerzők, 2019 © A Debreceni Egyetemi Kiadó, beleértve az egyetemi hálózaton belüli elektronikus terjesztés jogát, 2019. Kiadja a Debreceni Egyetemi Kiadó, az 1795-ben alapított Magyar Könyvkiadók és Könyvterjesztők Egyesülésének a tagja. Felelős kiadó: Karácsony Gyöngyi Technikai szerkesztő: Maticsák Sándor Borító: Deli-Nagy Tünde Készült a Kapitális Kft. nyomdájában, Debrecenben. TARTALOM – CONTENTS – INHALT SISÄLLYS – СОДЕРЖАНИЕ Baksa Alexandra: A nemek kifejezése Lukács evangéliumának finn fordításaiban .................................................................................... 5 Baksa Máté: Az első finn bibliafordítók ..................................................... 17 -
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Enchanted Rendezvous John C. Houbolt and the Genesis of the Lunar-Orbit Rendezvous Concept Enchanted Rendezvous: John C. Houbolt and the Genesis of the Lunar-Orbit Rendezvous Concept by James R. Hansen NASA History Office Code Z NASA Headquarters Washington DC 20546 MONOGRAPHS IN AEROSPACE HISTORY SERIES #4 December 1995 Foreword One of the most critical technical decisions made during the conduct of Project Apollo was the method of flying to the Moon, landing on the surface, and returning to Earth. Within NASA during this debate, several modes emerged. The one eventually chosen was lunar-orbit rendezvous (LOR), a proposal to send the entire lunar spacecraft up in one launch. It would head to the Moon, enter into orbit, and dispatch a small lander to the lunar surface. It was the simplest of the various methods, both in terms of development and operational costs, but it was risky. Because rendezvous would take place in lunar, instead of Earth, orbit, there was no room for error or the crew could not get home. Moreover, some of the trickiest course corrections and maneuvers had to be done after the spacecraft had been committed to a circumlunar flight. Between the time of NASA's conceptualization of the lunar landing program and the decision in favor of LOR in 1962, a debate raged among the advocates of the various methods. John C. Houbolt, an engineer at the Langley Research Center in Hampton, Virginia, was one of the most vocal of those supporting LOR and his campaign in 1961 and 1962 helped shape the deliberations in a fundamental way.