Analysis and Synthesis of Spatial Quality in 1/6 Gravity of Earth
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The Surrender Software
Scientific image rendering for space scenes with the SurRender software Scientific image rendering for space scenes with the SurRender software R. Brochard, J. Lebreton*, C. Robin, K. Kanani, G. Jonniaux, A. Masson, N. Despré, A. Berjaoui Airbus Defence and Space, 31 rue des Cosmonautes, 31402 Toulouse Cedex, France [email protected] *Corresponding Author Abstract The autonomy of spacecrafts can advantageously be enhanced by vision-based navigation (VBN) techniques. Applications range from manoeuvers around Solar System objects and landing on planetary surfaces, to in -orbit servicing or space debris removal, and even ground imaging. The development and validation of VBN algorithms for space exploration missions relies on the availability of physically accurate relevant images. Yet archival data from past missions can rarely serve this purpose and acquiring new data is often costly. Airbus has developed the image rendering software SurRender, which addresses the specific challenges of realistic image simulation with high level of representativeness for space scenes. In this paper we introduce the software SurRender and how its unique capabilities have proved successful for a variety of applications. Images are rendered by raytracing, which implements the physical principles of geometrical light propagation. Images are rendered in physical units using a macroscopic instrument model and scene objects reflectance functions. It is specially optimized for space scenes, with huge distances between objects and scenes up to Solar System size. Raytracing conveniently tackles some important effects for VBN algorithms: image quality, eclipses, secondary illumination, subpixel limb imaging, etc. From a user standpoint, a simulation is easily setup using the available interfaces (MATLAB/Simulink, Python, and more) by specifying the position of the bodies (Sun, planets, satellites, …) over time, complex 3D shapes and material surface properties, before positioning the camera. -
Andrea Abbate Annie Abbott Rose Abdoo Louisa
CHARACTERS and COMEDIENNES ACADEMY PLAYERS DIRECTORY #196 BOOK PAGE: 1 Agency(310)Personal 273-0744(213)Jo for Anne theN11571500 466-5170ManagementInc.96 Performing Astrow (212) 582- Arts, RussianImprovisation,SusanMid-EastGerman5Accent,DANCETerryCOUNSELLOR-AT-LAW,THESEVENTHMAD ft.Accent,LEGALINTOCommercialAccent,FEATURED 3(818)(213)ROSEANNE Accent,NatheYOUNG LichtmanRESTLESSSpecial in.LA ABOUT Accent,New THEWITHAccent,M8530CreditsER EAGLESC.P.C. FrenchLAW 120783-3003653-7573Irish91 HEAVEN & Singer, WOODS,TVYork Italian Skills Associates/AND MEAgency YOUlbs.Company StageAccent, TV Southern- TVMidwest- Accent TV Accent, Film Stage THEBritish-AdultAccent, TV (213)NewFencing,Accent, 878-1155YorkGeddesSpecial Firearms, SpanishL9984Accent,833396 Agency Skills (312) Russian- Accent Singer, 787- 5C.L.Inc.Personal ft.CHICAGOCommercialGABRIEL'S 4(213)SEINFELDSpecial in.HenryCreditsH6173Singer Talent 200461-3971461-5699Management96 HOPE Ong SkillsFIRE Agencylbs. Agency TV TV AdultTV ANDREA ANNIE ROSE LOUISA ABBATE ABBOTT ABDOO ABERNATHY MOTHERBritishTHOMPSONSAccent,Ice(714) Skating,ONEFEATUREDSpecial Accent,Messages & SouthernM6668Credits INCHCHILD, 751-500796 Swimming, Skills New EXPRESS, FilmDIE, STAR Accent York- TV 5 ft.Cavaleri 8(818) in.L8722 122Adult 955-9300&96 Associates lbs. Mature (310)Cycling,5Sailing, ft.Commercial 274-93565GillaSpecial in.Swimming Equestrian,N0179 Scuba7820 Roos,13596 Skills Agencylbs. (212) Diving,Ltd. Guitar, Adult 727- IT'SMURDER,TALES APersonal MAD,(818)HenriWORLD OFM2916Credits SHE MAD, 784-0534Management96 BollingerTHE -
Monte Carlo Methods to Calculate Impact Probabilities⋆
A&A 569, A47 (2014) Astronomy DOI: 10.1051/0004-6361/201423966 & c ESO 2014 Astrophysics Monte Carlo methods to calculate impact probabilities? H. Rickman1;2, T. Wisniowski´ 1, P. Wajer1, R. Gabryszewski1, and G. B. Valsecchi3;4 1 P.A.S. Space Research Center, Bartycka 18A, 00-716 Warszawa, Poland e-mail: [email protected] 2 Dept. of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden 3 IAPS-INAF, via Fosso del Cavaliere 100, 00133 Roma, Italy 4 IFAC-CNR, via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy Received 9 April 2014 / Accepted 28 June 2014 ABSTRACT Context. Unraveling the events that took place in the solar system during the period known as the late heavy bombardment requires the interpretation of the cratered surfaces of the Moon and terrestrial planets. This, in turn, requires good estimates of the statistical impact probabilities for different source populations of projectiles, a subject that has received relatively little attention, since the works of Öpik(1951, Proc. R. Irish Acad. Sect. A, 54, 165) and Wetherill(1967, J. Geophys. Res., 72, 2429). Aims. We aim to work around the limitations of the Öpik and Wetherill formulae, which are caused by singularities due to zero denominators under special circumstances. Using modern computers, it is possible to make good estimates of impact probabilities by means of Monte Carlo simulations, and in this work, we explore the available options. Methods. We describe three basic methods to derive the average impact probability for a projectile with a given semi-major axis, eccentricity, and inclination with respect to a target planet on an elliptic orbit. -
Introduction to Astronomy from Darkness to Blazing Glory
Introduction to Astronomy From Darkness to Blazing Glory Published by JAS Educational Publications Copyright Pending 2010 JAS Educational Publications All rights reserved. Including the right of reproduction in whole or in part in any form. Second Edition Author: Jeffrey Wright Scott Photographs and Diagrams: Credit NASA, Jet Propulsion Laboratory, USGS, NOAA, Aames Research Center JAS Educational Publications 2601 Oakdale Road, H2 P.O. Box 197 Modesto California 95355 1-888-586-6252 Website: http://.Introastro.com Printing by Minuteman Press, Berkley, California ISBN 978-0-9827200-0-4 1 Introduction to Astronomy From Darkness to Blazing Glory The moon Titan is in the forefront with the moon Tethys behind it. These are two of many of Saturn’s moons Credit: Cassini Imaging Team, ISS, JPL, ESA, NASA 2 Introduction to Astronomy Contents in Brief Chapter 1: Astronomy Basics: Pages 1 – 6 Workbook Pages 1 - 2 Chapter 2: Time: Pages 7 - 10 Workbook Pages 3 - 4 Chapter 3: Solar System Overview: Pages 11 - 14 Workbook Pages 5 - 8 Chapter 4: Our Sun: Pages 15 - 20 Workbook Pages 9 - 16 Chapter 5: The Terrestrial Planets: Page 21 - 39 Workbook Pages 17 - 36 Mercury: Pages 22 - 23 Venus: Pages 24 - 25 Earth: Pages 25 - 34 Mars: Pages 34 - 39 Chapter 6: Outer, Dwarf and Exoplanets Pages: 41-54 Workbook Pages 37 - 48 Jupiter: Pages 41 - 42 Saturn: Pages 42 - 44 Uranus: Pages 44 - 45 Neptune: Pages 45 - 46 Dwarf Planets, Plutoids and Exoplanets: Pages 47 -54 3 Chapter 7: The Moons: Pages: 55 - 66 Workbook Pages 49 - 56 Chapter 8: Rocks and Ice: -
Apollo Program 1 Apollo Program
Apollo program 1 Apollo program The Apollo program was the third human spaceflight program carried out by the National Aeronautics and Space Administration (NASA), the United States' civilian space agency. First conceived during the Presidency of Dwight D. Eisenhower as a three-man spacecraft to follow the one-man Project Mercury which put the first Americans in space, Apollo was later dedicated to President John F. Kennedy's national goal of "landing a man on the Moon and returning him safely to the Earth" by the end of the 1960s, which he proposed in a May 25, 1961 address to Congress. Project Mercury was followed by the two-man Project Gemini (1962–66). The first manned flight of Apollo was in 1968 and it succeeded in landing the first humans on Earth's Moon from 1969 through 1972. Kennedy's goal was accomplished on the Apollo 11 mission when astronauts Neil Armstrong and Buzz Aldrin landed their Lunar Module (LM) on the Moon on July 20, 1969 and walked on its surface while Michael Collins remained in lunar orbit in the command spacecraft, and all three landed safely on Earth on July 24. Five subsequent Apollo missions also landed astronauts on the Moon, the last in December 1972. In these six spaceflights, 12 men walked on the Moon. Apollo ran from 1961 to 1972, and was supported by the two-man Gemini program which ran concurrently with it from 1962 to 1966. Gemini missions developed some of the space travel techniques that were necessary for the success of the Apollo missions. -
Arxiv:2012.15102V2 [Hep-Ph] 13 May 2021 T > Tc
Confinement of Fermions in Tachyon Matter at Finite Temperature Adamu Issifu,1, ∗ Julio C.M. Rocha,1, y and Francisco A. Brito1, 2, z 1Departamento de F´ısica, Universidade Federal da Para´ıba, Caixa Postal 5008, 58051-970 Jo~aoPessoa, Para´ıba, Brazil 2Departamento de F´ısica, Universidade Federal de Campina Grande Caixa Postal 10071, 58429-900 Campina Grande, Para´ıba, Brazil We study a phenomenological model that mimics the characteristics of QCD theory at finite temperature. The model involves fermions coupled with a modified Abelian gauge field in a tachyon matter. It reproduces some important QCD features such as, confinement, deconfinement, chiral symmetry and quark-gluon-plasma (QGP) phase transitions. The study may shed light on both light and heavy quark potentials and their string tensions. Flux-tube and Cornell potentials are developed depending on the regime under consideration. Other confining properties such as scalar glueball mass, gluon mass, glueball-meson mixing states, gluon and chiral condensates are exploited as well. The study is focused on two possible regimes, the ultraviolet (UV) and the infrared (IR) regimes. I. INTRODUCTION Confinement of heavy quark states QQ¯ is an important subject in both theoretical and experimental study of high temperature QCD matter and quark-gluon-plasma phase (QGP) [1]. The production of heavy quarkonia such as the fundamental state ofcc ¯ in the Relativistic Heavy Iron Collider (RHIC) [2] and the Large Hadron Collider (LHC) [3] provides basics for the study of QGP. Lattice QCD simulations of quarkonium at finite temperature indicates that J= may persists even at T = 1:5Tc [4] i.e. -
Imagining Outer Space Also by Alexander C
Imagining Outer Space Also by Alexander C. T. Geppert FLEETING CITIES Imperial Expositions in Fin-de-Siècle Europe Co-Edited EUROPEAN EGO-HISTORIES Historiography and the Self, 1970–2000 ORTE DES OKKULTEN ESPOSIZIONI IN EUROPA TRA OTTO E NOVECENTO Spazi, organizzazione, rappresentazioni ORTSGESPRÄCHE Raum und Kommunikation im 19. und 20. Jahrhundert NEW DANGEROUS LIAISONS Discourses on Europe and Love in the Twentieth Century WUNDER Poetik und Politik des Staunens im 20. Jahrhundert Imagining Outer Space European Astroculture in the Twentieth Century Edited by Alexander C. T. Geppert Emmy Noether Research Group Director Freie Universität Berlin Editorial matter, selection and introduction © Alexander C. T. Geppert 2012 Chapter 6 (by Michael J. Neufeld) © the Smithsonian Institution 2012 All remaining chapters © their respective authors 2012 All rights reserved. No reproduction, copy or transmission of this publication may be made without written permission. No portion of this publication may be reproduced, copied or transmitted save with written permission or in accordance with the provisions of the Copyright, Designs and Patents Act 1988, or under the terms of any licence permitting limited copying issued by the Copyright Licensing Agency, Saffron House, 6–10 Kirby Street, London EC1N 8TS. Any person who does any unauthorized act in relation to this publication may be liable to criminal prosecution and civil claims for damages. The authors have asserted their rights to be identified as the authors of this work in accordance with the Copyright, Designs and Patents Act 1988. First published 2012 by PALGRAVE MACMILLAN Palgrave Macmillan in the UK is an imprint of Macmillan Publishers Limited, registered in England, company number 785998, of Houndmills, Basingstoke, Hampshire RG21 6XS. -
PHYSICS of ARTIFICIAL GRAVITY Angie Bukley1, William Paloski,2 and Gilles Clément1,3
Chapter 2 PHYSICS OF ARTIFICIAL GRAVITY Angie Bukley1, William Paloski,2 and Gilles Clément1,3 1 Ohio University, Athens, Ohio, USA 2 NASA Johnson Space Center, Houston, Texas, USA 3 Centre National de la Recherche Scientifique, Toulouse, France This chapter discusses potential technologies for achieving artificial gravity in a space vehicle. We begin with a series of definitions and a general description of the rotational dynamics behind the forces ultimately exerted on the human body during centrifugation, such as gravity level, gravity gradient, and Coriolis force. Human factors considerations and comfort limits associated with a rotating environment are then discussed. Finally, engineering options for designing space vehicles with artificial gravity are presented. Figure 2-01. Artist's concept of one of NASA early (1962) concepts for a manned space station with artificial gravity: a self- inflating 22-m-diameter rotating hexagon. Photo courtesy of NASA. 1 ARTIFICIAL GRAVITY: WHAT IS IT? 1.1 Definition Artificial gravity is defined in this book as the simulation of gravitational forces aboard a space vehicle in free fall (in orbit) or in transit to another planet. Throughout this book, the term artificial gravity is reserved for a spinning spacecraft or a centrifuge within the spacecraft such that a gravity-like force results. One should understand that artificial gravity is not gravity at all. Rather, it is an inertial force that is indistinguishable from normal gravity experience on Earth in terms of its action on any mass. A centrifugal force proportional to the mass that is being accelerated centripetally in a rotating device is experienced rather than a gravitational pull. -
North Carolina Obituaries Courier Tribune Name Date of Paper Page # Date of Death Abbott, Blannie Allen 7-Aug-84 7A 6-Aug-84
North Carolina Obituaries Courier Tribune Name Date of Paper Page # Date of Death Abbott, Blannie Allen 7-Aug-84 7A 6-Aug-84 Abbott, Douglas L. 1-Sep-82 12A 30-Aug-82 Abbott, Helen Hartsook 3-Dec-82 9A 2-Dec-82 Abbott, Molly Jeane 3-Nov-81 8A 31-Oct-81 Abbott, Nora Johnson Mitchell 14-Oct-83 12A 13-Oct-83 Abbott, Roger 1-Aug-84 6A 31-Jul-84 Abercrombie, Dodd 5-Oct-80 6A 3-Oct-80 Abernathy, Ray Paul 29-Jun-80 8A 28-Jun-80 Abernathy, Shaun Travis 24-May-83 8A 24-May-83 Abrams, Reagan Vincent 28-Sep-80 6A 26-Sep-80 Abston, Thomas Earl 30-Dec-82 10A 29-Dec-82 Ackerman, Elsie K. 20-Apr-82 8A 19-Apr-82 Acree, Una Mae Phillips 6-Jul-81 6A 5-Jul-81 Adams, Anna Threadgill 9-Dec-85 9A 8-Dec-85 Adams, Annie Vaughn 12-Mar-85 6A 11-Mar-85 Adams, Bernice Hooper 6-Jul-82 8A 5-Jul-82 Adams, Dora Carrick 13-Jun-80 10A 12-Jun-80 Adams, Edward Vance 23-May-83 6A 23-May-83 Adams, Herman Hugh Sr. 29-Oct-81 8A 27-Oct-81 Adams, James Clifton 18-Sep-84 9A 17-Sep-84 Adams, John Edwin 1-Mar-84 10A 29-Feb-84 Adams, T.B. 15-Oct-82 10A 14-Oct-82 Adams, Velma D. 11-Aug-81 8A 10-Aug-81 Adcock, Plackard C. 6-Jul-82 8A 5-Jul-82 Aderholt, Daniel H. 17-May-85 10A 13-May-85 Adkins, Clarence Odell 1-Jan-85 7A 1-Jan-85 Adkins, E.G. -
Up, Up, and Away by James J
www.astrosociety.org/uitc No. 34 - Spring 1996 © 1996, Astronomical Society of the Pacific, 390 Ashton Avenue, San Francisco, CA 94112. Up, Up, and Away by James J. Secosky, Bloomfield Central School and George Musser, Astronomical Society of the Pacific Want to take a tour of space? Then just flip around the channels on cable TV. Weather Channel forecasts, CNN newscasts, ESPN sportscasts: They all depend on satellites in Earth orbit. Or call your friends on Mauritius, Madagascar, or Maui: A satellite will relay your voice. Worried about the ozone hole over Antarctica or mass graves in Bosnia? Orbital outposts are keeping watch. The challenge these days is finding something that doesn't involve satellites in one way or other. And satellites are just one perk of the Space Age. Farther afield, robotic space probes have examined all the planets except Pluto, leading to a revolution in the Earth sciences -- from studies of plate tectonics to models of global warming -- now that scientists can compare our world to its planetary siblings. Over 300 people from 26 countries have gone into space, including the 24 astronauts who went on or near the Moon. Who knows how many will go in the next hundred years? In short, space travel has become a part of our lives. But what goes on behind the scenes? It turns out that satellites and spaceships depend on some of the most basic concepts of physics. So space travel isn't just fun to think about; it is a firm grounding in many of the principles that govern our world and our universe. -
Surface Gravity and Interstellar Settlement (Version 3.0 September 2016)
Surface Gravity and Interstellar Settlement (version 3.0 September 2016) by Gerald D. Nordley 1238 Prescott Avenue Sunnyvale, CA 94089-2334 [email protected] Abstract. Gravity determines the scale of many physical Jupiter's inner satellites melts the ice of Europa and drives phenomena on and above a world's surface. Assuming that tool- volcanoes on Io, and that Mars in the past has had rain and using intelligences come from, and would settle, worlds with solid floods serves notice that worlds that are significantly less surfaces and gravities equal or less than that of their origin, we massive than Earth and have significantly less surface gravity note that such worlds in the Solar System have surface gravities can still have the deep atmospheres and liquid water significantly lower than that of Earth. The distribution of these temperatures needed to sustain life. surface gravities clumps around factors of about 2.5 and favors worlds with about one-sixth Earth gravity, conventionally 2. Surface Gravity Basics considered too small to retain atmospheres. Titan, however, Mass is, roughly, a measure of the amount of substance. shows that low surface gravity does not, in itself, preclude the Weight is the force by which that substance is attracted to presence a substantial atmosphere. Where small worlds have another mass. This force is directly proportional to the product of low exobase temperatures,and protection from stellar winds, both masses and inversely proportional to the square of the substantial atmospheres may be retained. distance between them. A spherically symmetric planet can be Significantly lower surface gravity affects a number of physical treated as if all the mass were at the center, so the relevant phenomena that affect environment and technological evolution-- distance is the radius from the center to the object. -
1. Two Objects Attract Each Other Gravitationally. If the Distance Between Their Centers Is Cut in Half, the Gravitational Force A) Is Cut to One Fourth
MULTIPLE CHOICE REVIEW – GRAVITATION (Dynamics Part 3) 1. Two objects attract each other gravitationally. If the distance between their centers is cut in half, the gravitational force A) is cut to one fourth. B) is cut in half. C) doubles. D) quadruples 2. Two objects, with masses m1 and m2, are originally a distance r apart. The magnitude of the gravitational force between them is F. The masses are changed to 2m1 and 2m2, and the distance is changed to 4r. What is the magnitude of the new gravitational force? A) F/16 B) F/4 C) 16F D) 4F 3. As a rocket moves away from the Earth's surface, the rocket's weight A) increases. B) decreases. C) remains the same. D) depends on how fast it is moving. 4. A hypothetical planet has a mass of half that of the Earth and a radius of twice that of the Earth. What is the acceleration due to gravity on the planet in terms of g, the acceleration due to gravity at the Earth? A) g B) g/2 C) g/4 D) g/8 5. Two planets have the same surface gravity, but planet B has twice the mass of planet A. If planet A has radius r, what is the radius of planet B? A) 0.707r B) r C) 1.41r D) 4r 6. A planet is discovered to orbit around a star in the galaxy Andromeda, with the same orbital diameter as the Earth around our Sun. If that star has 4 times the mass of our Sun, what will the period of revolution of that new planet be, compared to the Earth's orbital period? A) one-fourth as much B) one-half as much C) twice as much D) four times as much 7.