A Numerical Investigation of Thermal Conditions and Deformations of the Astronomical Roentgen Telescope

Size: px
Start display at page:

Download "A Numerical Investigation of Thermal Conditions and Deformations of the Astronomical Roentgen Telescope"

Transcription

1 Spectrum-Roentgen-Gamma International Experiment A Numerical Investigation of Thermal Conditions and Deformations of the Astronomical Roentgen Telescope А. Ryabov, V. Spirin, S. Gulakov, S. Garanin, S. Grigorovich M.Pavlinskyi, N.Semena Sarov Engineering Center Institute of Laser Physics VNIIEF Space Research Institute RAS RUSSIA 1

2 International Spacecraft Platform 2

3 Astronomical Roentgen Telescope-ART-XC The main purpose of ART-XC telescope (Astronomical Roentgen Telescope X-ray Concentrator) with X-ray optical system is searching of space under a hard X-ray range to solve scientific problems in frame of Spectrum-RG international experiment. One of the major requirements for the telescope is to ensure restricted temperatures and minimal thermal deformations of the construction from solar irradiation and heating effects of spacecraft during orbital flight. Therefore, a detailed computer simulation of temperature conditions and thermal deformation of telescope parts in outer space is carried out at a development stage using STAR-CCM+. 3

4 ART-XC Orbital Motion and Solar Irradiation Shadow and Sunlight interchange depending on a Spacecraft Orientation 4

5 Operating Modes and Requirements The telescope is in orbit under solar irradiation that heats its different construction zones depending on a spacecraft orientation. In addition, some heaters of thermal control system may breakdown in flight. Separate parts of the telescope optical system are capable to run in a certain temperature range that imposes stringent requirements for the thermal control system during off-line operation in outer space. To meet these requirements 9 thermal modes are calculated: minimal and maximal mode (depending on solar radiation presence), 7 scenarios of a survival mode (emergency modes in case of some heater or its circuit breakdown). Simulation of each mode adds up to finding the minimum required power of heaters and their location that ensure an acceptable range of construction temperatures. 5

6 Methodology of Numerical Simulations Meshing (pro-star) Temperatures (STAR-CCM+) Thermal deformations & Displacements (Abaqus) 6

7 Computer Models of Real Structure 7

8 Description of Computer Models Multi-band radiant heat exchange by Plank s law for separate simulation of the solar and heat radiation, temperature dependence of material properties, an anisotropic solid model causes extremely sophisticated and non-linear problem formulation. The solar and heat radiation are considered separately for better accounting of the direct and reflected solar radiation action. 512 rays (1024 by default) are assumed for the considering construction that has about 700 thousand patches. This combination is acceptable for the accuracy, computational time and memory requirements. 8

9 Description of Computer Models The problem of heat conduction in anisotropic solids along with multi-band radiative heat transfer was numerically implemented in STAR-CCM+ using the fully implicit algorithm. AMG method was used with an increased number of iterations at "coarse" levels (W cycle) with the following parameters: maximum number of cycles: n = 150, convergence rate: N = 0,001. The selected solver parameters allow to obtain a converge solution for about three thousand of iterations. 9

10 Temperatures in a Tube Research of Grid Solution Convergence. Temperatures correspond to Minimal Mode 1.2 million cells 9.7million cells 10

11 X-Ray Mirror Spider and Detector Plate Research of Grid Solution Convergence. Temperatures correspond to Minimal Mode 1.2 million cells 9.7million cells 11

12 Temperatures of a Protective Unit Minimal Mode Temperatures Orbital Transfer Mode (Heaters turned off) 12

13 Temperatures of Mirrors and Spider Minimal Mode Temperatures Orbital Transfer Mode (Heaters turned off) 13

14 Thermal deformations Maximal calculated thermal displacements of the optical channel parts are almost the same for all considered temperature modes and they are: for X-ray mirrors 0.25 mm, for block of X-ray detectors 1.2 mm 14

15 Conclusions 1. Several computer models have been developed for numerical simulations of ART-XC steady and unsteady thermal states. The convergence of the solution and adequacy of the numerical results were examined and confirmed on the basis of these models. 2. The anisotropic computer model of X-mirror heat equivalent has been developed and numerically proved. This model allows reflecting the actual construction adequately, without significant distortion of the temperature field. Incorporating of this heat equivalent to the telescope computer model allowed significantly saving of the required computational cost. 15

16 Conclusions 3. Several thermal modes were analyzed: minimal and maximal modes, seven scenarios of the survival mode. Minimum required powers and location of 29 heat elements was defined for each mode, providing the acceptable temperature range of the construction. 4. The influence of surface emissivity variation ( for a polished surface of aluminum alloy= , for carbon fiber= , for a polished surface of steel parts= ) on the telescope thermal modes has been investigated by numerical experiments, it causes temperature variation of the main parts of about 2% or less than 5K. 5. Calculated maximal thermal deformations of X- mirror shells and other telescope parts ensure the specified geometric characteristics of the optical channels. 16

17 Assembly of ART-XC Spacecraft Platform With best wishes for upcoming flight! Sarov Engineering Center 17

The On-Orbit Thermal-Structural Analysis of the Spacecraft Component Using MSC/NASTRAN. Abstract

The On-Orbit Thermal-Structural Analysis of the Spacecraft Component Using MSC/NASTRAN. Abstract The On-Orbit Thermal-Structural Analysis of the Spacecraft Component Using MSC/NASTRAN Lihua Zhang, Yuegen Chen Beijing Institute of Spacecraft System Engineering, CAST, China (P.O.Box 9628-3, Beijing

More information

Thermal deformation of 3U CubeSat in low Earth orbit

Thermal deformation of 3U CubeSat in low Earth orbit Thermal deformation of 3U CubeSat in low Earth orbit Vasily Gorev 1,, Anatoly Pelemeshko 1, Alexander Zadorozhny 1, and Aleksey Sidorchuk 1,2 1 Novosibirsk State University, 630090, Pirogova str., 2, Novosibirsk,

More information

UNIT FOUR SOLAR COLLECTORS

UNIT FOUR SOLAR COLLECTORS ME 476 Solar Energy UNIT FOUR SOLAR COLLECTORS Flat Plate Collectors Outline 2 What are flat plate collectors? Types of flat plate collectors Applications of flat plate collectors Materials of construction

More information

Documentation of the Solutions to the SFPE Heat Transfer Verification Cases

Documentation of the Solutions to the SFPE Heat Transfer Verification Cases Documentation of the Solutions to the SFPE Heat Transfer Verification Cases Prepared by a Task Group of the SFPE Standards Making Committee on Predicting the Thermal Performance of Fire Resistive Assemblies

More information

Thermal Design and Analysis of the BroadBand Radiometer. Oliver Poyntz-Wright (Rutherford Appleton Laboratory, United Kingdom)

Thermal Design and Analysis of the BroadBand Radiometer. Oliver Poyntz-Wright (Rutherford Appleton Laboratory, United Kingdom) 255 Appendix T Thermal Design and Analysis of the BroadBand Radiometer Oliver Poyntz-Wright (Rutherford Appleton Laboratory, United Kingdom) 256 Thermal Design and Analysis of the BroadBand Radiometer

More information

3D Finite Element Thermal and Structural Analysis of the RT-70 Full-Circle Radio Telescope

3D Finite Element Thermal and Structural Analysis of the RT-70 Full-Circle Radio Telescope 3D Finite Element Thermal and Structural Analysis of the RT-70 Full-Circle Radio Telescope Alexey I. Borovkov Denis V. Shevchenko Alexander V. Gaev Alexander S. Nemov Computational Mechanics Laboratory,

More information

If there is convective heat transfer from outer surface to fluid maintained at T W.

If there is convective heat transfer from outer surface to fluid maintained at T W. Heat Transfer 1. What are the different modes of heat transfer? Explain with examples. 2. State Fourier s Law of heat conduction? Write some of their applications. 3. State the effect of variation of temperature

More information

Heat Transfer Modeling

Heat Transfer Modeling Heat Transfer Modeling Introductory FLUENT Training 2006 ANSYS, Inc. All rights reserved. 2006 ANSYS, Inc. All rights reserved. 7-2 Outline Energy Equation Wall Boundary Conditions Conjugate Heat Transfer

More information

PROTECTION OF MANNED SPACECRAFT RADIATOR FROM SPACE DEBRIS

PROTECTION OF MANNED SPACECRAFT RADIATOR FROM SPACE DEBRIS PROTECTION OF MANNED SPACECRAFT RADIATOR FROM SPACE DEBRIS Shan Li (1), Zheng Shigui (1), Yan Jun (1) (1) Institute of Spacecraft System Engineering, China Academy of Space Technology, Youyi Road 104,

More information

FINITE ELEMENTS ANALYSIS OF THERMAL STEADY STATE, USING ANSYS

FINITE ELEMENTS ANALYSIS OF THERMAL STEADY STATE, USING ANSYS FINITE ELEMENTS ANALYSIS OF THERMAL STEADY STATE, USING ANSYS Gavril GREBENIŞAN 1, Ioan Eugen RADU 2 Ioan ANTON 3 1 University of Oradea, grebe@uoradea.ro 2 University of Oradea, iradu@uoradea.ro 3 GMAB

More information

Kudryavtsev A. Yu., Zhelezov S.A., (Sarov Engineering Center) Polovin M.M., Litvinov M.S. (Sukhoi Civil Aircraft)

Kudryavtsev A. Yu., Zhelezov S.A., (Sarov Engineering Center) Polovin M.M., Litvinov M.S. (Sukhoi Civil Aircraft) Numerical Simulations of High Temperature Jets from the Main Propulsion System and Auxiliary Power Unit Impinging Against a Construction of the Passenger Plane Kudryavtsev A. Yu., Zhelezov S.A., (Sarov

More information

An Evacuated PV/Thermal Hybrid Collector with the Tube/XCPC design

An Evacuated PV/Thermal Hybrid Collector with the Tube/XCPC design An Evacuated PV/Thermal Hybrid Collector with the Tube/XCPC design Lun Jiang Chuanjin Lan Yong Sin Kim Yanbao Ma Roland Winston University of California, Merced 4200 N.Lake Rd, Merced CA 95348 ljiang2@ucmerced.edu

More information

What do we do with the image?

What do we do with the image? Astro 150 Spring 2018: Lecture 7 page 1 Reading: Chapter 6, Sect. 6.4; Chapter 14 + assignment posted on Astro 150 website Homework: questions on special reading - answers due in lecture Thursday Exam

More information

x Contents Segmented Mirror Telescopes Metal and Lightweight Mirrors Mirror Polishing

x Contents Segmented Mirror Telescopes Metal and Lightweight Mirrors Mirror Polishing Contents 1 Fundamentals of Optical Telescopes... 1 1.1 A Brief History of Optical Telescopes.................... 1 1.2 General Astronomical Requirements..................... 6 1.2.1 Angular Resolution.............................

More information

CRaTER Thermal Analysis

CRaTER Thermal Analysis CRaTER Thermal Analysis Huade Tan Contents System Overview Design & Requirements Inputs and Assumptions Power Dissipations Environment and Orbit Current Model Results Instrument temperatures Orbital temperature

More information

Current status of SRG/ART-XC

Current status of SRG/ART-XC Current status of /ART-XC Mikhail Pavlinsky (IKI, Moscow) AXRO-2014, 10 December 2014 1 Roscosmos Space Research Institute, IKI, Moscow Lavochkin Association, Khimki VNIIEF, Sarov MSFC/NASA Max-Planck-Institute

More information

Baffle Telescope Tube. Bus Module Bus MLI

Baffle Telescope Tube. Bus Module Bus MLI The Institute of Space and Astronautical Science Report SP No.14, December 2000 HII/L2 Mission Cryogenic System By Masayuki Hirabayashi Λ, Makoto Kyoya Λ, Masahide Murakami y ; and Toshio Matsumoto z (November

More information

Heat Transfer Modeling using ANSYS FLUENT

Heat Transfer Modeling using ANSYS FLUENT Lecture 2 - Conduction Heat Transfer 14.5 Release Heat Transfer Modeling using ANSYS FLUENT 2013 ANSYS, Inc. March 28, 2013 1 Release 14.5 Agenda Introduction Energy equation in solids Equation solved

More information

Why Go To Space? Leon Golub, SAO BACC, 27 March 2006

Why Go To Space? Leon Golub, SAO BACC, 27 March 2006 Why Go To Space? Leon Golub, SAO BACC, 27 March 2006 Solar Observation Observation of the Sun has a long and distinguished history Especially important as calendar where e.g. seasonal monsoons produced

More information

Chapter 26. Objectives. Describe characteristics of the universe in terms of time, distance, and organization

Chapter 26. Objectives. Describe characteristics of the universe in terms of time, distance, and organization Objectives Describe characteristics of the universe in terms of time, distance, and organization Identify the visible and nonvisible parts of the electromagnetic spectrum Compare refracting telescopes

More information

Problem Solving. radians. 180 radians Stars & Elementary Astrophysics: Introduction Press F1 for Help 41. f s. picture. equation.

Problem Solving. radians. 180 radians Stars & Elementary Astrophysics: Introduction Press F1 for Help 41. f s. picture. equation. Problem Solving picture θ f = 10 m s =1 cm equation rearrange numbers with units θ factors to change units s θ = = f sinθ fθ = s / cm 10 m f 1 m 100 cm check dimensions 1 3 π 180 radians = 10 60 arcmin

More information

VHITAL-160 thermal model building and 3D thermal modeling carrying-out

VHITAL-160 thermal model building and 3D thermal modeling carrying-out VHITAL-160 thermal model building and 3D thermal modeling carrying-out IEPC-2005-108 Presented at the 29 th International Electric Propulsion Conference, Princeton University, Svetlana A. Tverdokhlebova

More information

The Principles of Astronomical Telescope Design

The Principles of Astronomical Telescope Design The Principles of Astronomical Telescope Design Jingquan Cheng National Radio Astronomy Observatory Charlottesville, Virginia,.USA " 4y Springer Fundamentals of Optical Telescopes 1 1.1 A Brief History

More information

Status and Calibration of the erosita X ray Telescope

Status and Calibration of the erosita X ray Telescope Status and Calibration of the erosita X ray Telescope Vadim Burwitz Max Planck Institut für extraterrestrische Physik on behalf of the erosita Team IACHEC, Lake Arrowhead, USA, 29 Mar 2017 Spektr Rentgen

More information

Gravitational Waves & Precision Measurements

Gravitational Waves & Precision Measurements Gravitational Waves & Precision Measurements Mike Smith 1 -20 2 HOW SMALL IS THAT? Einstein 1 meter 1/1,000,000 3 1,000,000 smaller Wavelength of light 10-6 meters 1/10,000 4 10,000 smaller Atom 10-10

More information

STUDY OF OPTICAL-ENERGY PARAMETERS OF PLANETARY EMISSION DETECTORS IN SOLAR MODULES WITH PARABOLOCYLINDRICAL HUB V. Mayorov, V. Trushevsky, Ph.D. L.

STUDY OF OPTICAL-ENERGY PARAMETERS OF PLANETARY EMISSION DETECTORS IN SOLAR MODULES WITH PARABOLOCYLINDRICAL HUB V. Mayorov, V. Trushevsky, Ph.D. L. STUDY OF OPTICAL-ENERGY PARAMETERS OF PLANETARY EMISSION DETECTORS IN SOLAR MODULES WITH PARABOLOCYLINDRICAL HUB V. Mayorov, V. Trushevsky, Ph.D. L. Looky, Ph.D. Moscow State University of Design and Technology,

More information

Thermal and structural design constraints for radiometers operating in geostationary orbits. G. E. Zurmehly, R. A. Hookman

Thermal and structural design constraints for radiometers operating in geostationary orbits. G. E. Zurmehly, R. A. Hookman Thermal and structural design constraints for radiometers operating in geostationary orbits G. E. Zurmehly, R. A. Hookman ITT Aerospace/Communications Division Fort Wayne, Indiana ABSTRACT For a radiometer

More information

SOLVING TRANSIENT CONDUCTION AND RADIATION USING FINITE VOLUME METHOD

SOLVING TRANSIENT CONDUCTION AND RADIATION USING FINITE VOLUME METHOD SOLVING TRANSIENT CONDUCTION AND RADIATION USING FINITE VOLUME METHOD 1 PRERANA NASHINE, 2 ASHOK K SATAPATHY 1,2 National Institute of Technology Rourkela, Mechanical Engineering Department, India E-mail:

More information

Answer Key for Exam C

Answer Key for Exam C Answer Key for Exam C 1 point each Choose the answer that best completes the question. Read each problem carefully and read through all the answers. Take your time. If a question is unclear, ask for clarification

More information

Answer Key for Exam B

Answer Key for Exam B Answer Key for Exam B 1 point each Choose the answer that best completes the question. Read each problem carefully and read through all the answers. Take your time. If a question is unclear, ask for clarification

More information

Chapter 23. Light, Astronomical Observations, and the Sun

Chapter 23. Light, Astronomical Observations, and the Sun Chapter 23 Light, Astronomical Observations, and the Sun The study of light Electromagnetic radiation Visible light is only one small part of an array of energy Electromagnetic radiation includes Gamma

More information

Static and Modal Analysis of Telescope Frame in Satellite

Static and Modal Analysis of Telescope Frame in Satellite Abstract Static and Modal Analysis of Telescope Frame in Satellite Sun Libin Department of Mechanical Engineering Tsinghua University Feng Hui School of Material Science and Engineering University of Science

More information

Department of Energy Science & Engineering, IIT Bombay, Mumbai, India. *Corresponding author: Tel: ,

Department of Energy Science & Engineering, IIT Bombay, Mumbai, India. *Corresponding author: Tel: , ICAER 2011 AN EXPERIMENTAL AND COMPUTATIONAL INVESTIGATION OF HEAT LOSSES FROM THE CAVITY RECEIVER USED IN LINEAR FRESNEL REFLECTOR SOLAR THERMAL SYSTEM Sudhansu S. Sahoo* a, Shinu M. Varghese b, Ashwin

More information

Astronomy 114. Lecture 26: Telescopes. Martin D. Weinberg. UMass/Astronomy Department

Astronomy 114. Lecture 26: Telescopes. Martin D. Weinberg. UMass/Astronomy Department Astronomy 114 Lecture 26: Telescopes Martin D. Weinberg weinberg@astro.umass.edu UMass/Astronomy Department A114: Lecture 26 17 Apr 2007 Read: Ch. 6,26 Astronomy 114 1/17 Announcements Quiz #2: we re aiming

More information

1) What do all waves transport from one place to another?

1) What do all waves transport from one place to another? Pre Quiz 1) What do all waves transport from one place to another? 2) In which of the following scenarios would the Doppler effect be present? a) A police car, with its siren sounding, speeds past you

More information

are optical and mechanical groups, receivers and sources of radiation, electronic blocks, etc. The OED temperature rate

are optical and mechanical groups, receivers and sources of radiation, electronic blocks, etc. The OED temperature rate HEAT DESIGN OF OPTO-ELECTRONICAL DEVICES IN TRAINING OPTICS SPECIALISTS. G.NDoulnev, E.G.Doulneva St.Petersburg Institute of Fine Mechanics and Optics 14, Sablinskaya St., St.Petersburg 197101 Russia The

More information

OOFELIE::Multiphysics 2014

OOFELIE::Multiphysics 2014 OOFELIE::Multiphysics 2014 INDUSTRIAL MULTIPHYSICS DESIGN FOR OPTICAL DEVICES INTRODUCTION 2 High precision opto-mechanics A VERY HIGH ACCURACY IN THE PRODUCTION OF MIRRORS AND LENSES IS NOW VERY OFTEN

More information

Educational Product Teachers Grades K-12 EG MSFC

Educational Product Teachers Grades K-12 EG MSFC Educational Product Teachers Grades K-12 NASA Spacelink Optics: An Educators Guide With Activities In Science and Mathematics is available in electronic format through NASA Spacelink one of the Agency

More information

Prentice Hall EARTH SCIENCE

Prentice Hall EARTH SCIENCE Prentice Hall EARTH SCIENCE Tarbuck Lutgens Chapter 24 Studying the Sun 24.1 The Study of Light Electromagnetic Radiation Electromagnetic radiation includes gamma rays, X-rays, ultraviolet light, visible

More information

Astronomy. Optics and Telescopes

Astronomy. Optics and Telescopes Astronomy A. Dayle Hancock adhancock@wm.edu Small 239 Office hours: MTWR 10-11am Optics and Telescopes - Refraction, lenses and refracting telescopes - Mirrors and reflecting telescopes - Diffraction limit,

More information

User Documents and Examples II

User Documents and Examples II User Documents and Examples II John Apostolakis Most slides from Dennis Wright s talk at SLAC Geant4 Tutorial, May 2007 Geant4 V8.3 Outline User Documents Toolkit Developers' Guide Physics Reference Manual

More information

Experimental Study on Light Flash Radiant Intensity Generated by Strong Shock 2A12 Aluminum Plate

Experimental Study on Light Flash Radiant Intensity Generated by Strong Shock 2A12 Aluminum Plate Experimental Study on Light Flash Radiant Intensity Generated by Strong Shock 2A12 Aluminum Plate TANG Enling ( ) 1, ZHANG Lijiao ( ) 1, ZHANG Qingming ( ) 2, SHI Xiaohan ( ) 1, WANG Meng ( ) 1, WANG Di

More information

PROBLEM Node 5: ( ) ( ) ( ) ( )

PROBLEM Node 5: ( ) ( ) ( ) ( ) PROBLEM 4.78 KNOWN: Nodal network and boundary conditions for a water-cooled cold plate. FIND: (a) Steady-state temperature distribution for prescribed conditions, (b) Means by which operation may be extended

More information

Todays Topics 3/19/2018. Light and Telescope. PHYS 1403 Introduction to Astronomy. CCD Camera Makes Digital Images. Astronomical Detectors

Todays Topics 3/19/2018. Light and Telescope. PHYS 1403 Introduction to Astronomy. CCD Camera Makes Digital Images. Astronomical Detectors PHYS 1403 Introduction to Astronomy Light and Telescope Chapter 6 Todays Topics Astronomical Detectors Radio Telescopes Why we need space telescopes? Hubble Space Telescopes Future Space Telescopes Astronomy

More information

Part 12- Physics Paper 1 Atomic Structure Knowledge Questions

Part 12- Physics Paper 1 Atomic Structure Knowledge Questions Part 12- Physics Paper 1 Atomic Structure Knowledge Questions Internal energy and energy transfers Internal energy and energy transfers Changes of state and the particle model Particle Model of Matter

More information

SOLAR SIMULATOR ON THE BASIS OF POWER- FUL LIGHT-EMITTING DIODES

SOLAR SIMULATOR ON THE BASIS OF POWER- FUL LIGHT-EMITTING DIODES SOLAR SIMULATOR ON THE BASIS OF POWER- FUL LIGHT-EMITTING DIODES Oxana Aldoshina 1*, Vyacheslav Yugay 2, Nurbol Kaliaskarov 2, Ulan Esenjolov 2, Saltanat Nesipova 2 1 National Research Tomsk Polytechnic

More information

SIMULATION OF HEAT TRANSFER AND ELECTROMAGNETIC FIELDS OF PROTECTED MICROCOMPUTERS

SIMULATION OF HEAT TRANSFER AND ELECTROMAGNETIC FIELDS OF PROTECTED MICROCOMPUTERS 281 Simulation of heat transfer and electromagnetic fields of protected microcomputers SIMULATION OF HEAT TRANSFER AND ELECTROMAGNETIC FIELDS OF PROTECTED MICROCOMPUTERS J. Lakatoš, J. untala, A. Kondelová

More information

Foundations of Astronomy 13e Seeds. Chapter 6. Light and Telescopes

Foundations of Astronomy 13e Seeds. Chapter 6. Light and Telescopes Foundations of Astronomy 13e Seeds Chapter 6 Light and Telescopes Guidepost In this chapter, you will consider the techniques astronomers use to study the Universe What is light? How do telescopes work?

More information

1. The most important aspects of the quantum theory.

1. The most important aspects of the quantum theory. Lecture 5. Radiation and energy. Objectives: 1. The most important aspects of the quantum theory: atom, subatomic particles, atomic number, mass number, atomic mass, isotopes, simplified atomic diagrams,

More information

Radiation Heat Transfer. Introduction. Blackbody Radiation. Definitions ,

Radiation Heat Transfer. Introduction. Blackbody Radiation. Definitions , Radiation Heat Transfer Reading Problems 5-5-7 5-27, 5-33, 5-50, 5-57, 5-77, 5-79, 5-96, 5-07, 5-08 Introduction A narrower band inside the thermal radiation spectrum is denoted as the visible spectrum,

More information

Light: Transverse WAVE

Light: Transverse WAVE Light Longitudinal WAVES Light: Transverse WAVE Light: Particle or wave Photon The Wave Nature of Light 1. Unlike other branches of science, astronomers cannot touch or do field work on their samples.

More information

Thickness Allocation Between Two Fused Silica Filters

Thickness Allocation Between Two Fused Silica Filters Thickness Allocation Between Two Fused Silica Filters Brian Vick And J. Robert Mahan Mechanical Engineering Department Virginia Tech Kory Priestley CERES & RBI Project Scientist NASA Langley Research Center

More information

2.4m Space Telescopes

2.4m Space Telescopes 2.4m Space Telescopes Hardware Summary September 4, 2012 This document is not subject to the controls of the International Traffic in Arms Regulations (ITAR) or the Export Administration Regulations (EAR).

More information

The Main Point. Familiar Optics. Some Basics. Lecture #8: Astronomical Instruments. Astronomical Instruments:

The Main Point. Familiar Optics. Some Basics. Lecture #8: Astronomical Instruments. Astronomical Instruments: Lecture #8: Astronomical Instruments Astronomical Instruments: Optics: Lenses and Mirrors. Detectors. Ground Based Telescopes: Optical, Infrared, and Radio. Space Based Telescopes. Spacecraft Missions.

More information

RASE 2009 Development of Sunshield Panels for Passive Radiant Cooler On Board Meteorological Instruments of ISRO.

RASE 2009 Development of Sunshield Panels for Passive Radiant Cooler On Board Meteorological Instruments of ISRO. RASE 2009 Development of Sunshield Panels for Passive Radiant Cooler On Board Meteorological Instruments of ISRO. Madhu Prasad¹, Basavaraj S.Akkimaradi¹,Santram¹*, T.Selvan¹, Subramanya¹, S.C.Rastogi¹,

More information

James Webb Space Telescope (JWST)

James Webb Space Telescope (JWST) James Webb Space Telescope (JWST) Engineering the Beginning US Frontiers of Engineering Conference Amy S. Lo JWST System Engineering Space-Based observation has enabled giant leaps in our understanding

More information

Phys 2310 Wed. Sept. 20, 2017 Today s Topics

Phys 2310 Wed. Sept. 20, 2017 Today s Topics Phys 2310 Wed. Sept. 20, 2017 Today s Topics - Brief History of Light & Optics Electromagnetic Spectrum Electromagnetic Spectrum Visible, infrared & ultraviolet Wave/Particle Duality (waves vs. photons)

More information

LUSCAT (Lunar Soil Composition Analysis Telescope): An Instrument To Detect X And Gamma Ray From The Moon

LUSCAT (Lunar Soil Composition Analysis Telescope): An Instrument To Detect X And Gamma Ray From The Moon (Lunar Soil Composition Analysis Telescope): An Instrument To Detect X And Gamma Ray From The Moon P. Battaglia 1, A. Bonati 1, P.H. Leutenegger 1, M. Pecora 1,F.Perotti 2, G. Villa 2, C. Labanti 3 Template

More information

Essay 4. Numerical Solutions of the Equations of Heat Transfer and Fluid Flow

Essay 4. Numerical Solutions of the Equations of Heat Transfer and Fluid Flow Essay 4 Numerical Solutions of the Equations of Heat Transfer and Fluid Flow 4.1 Introduction In Essay 3, it was shown that heat conduction is governed by a partial differential equation. It will also

More information

THE OBSERVATION AND ANALYSIS OF STELLAR PHOTOSPHERES

THE OBSERVATION AND ANALYSIS OF STELLAR PHOTOSPHERES THE OBSERVATION AND ANALYSIS OF STELLAR PHOTOSPHERES DAVID F. GRAY University of Western Ontario, London, Ontario, Canada CAMBRIDGE UNIVERSITY PRESS Contents Preface to the first edition Preface to the

More information

HOW ADVANCED PYROMETERS INCREASE THERMAL PROCESS REPEATABILITY AND PRODUCT QUALITY

HOW ADVANCED PYROMETERS INCREASE THERMAL PROCESS REPEATABILITY AND PRODUCT QUALITY HOW ADVANCED PYROMETERS INCREASE THERMAL PROCESS REPEATABILITY AND PRODUCT QUALITY Accurate temperature measurement is key for controlling the stability and repeatability of many temperature-critical processes.

More information

NTUA. Physics Department, National Technical University of Athens. June IPRD10,, Siena, Italy S. Maltezos SIENA ITALY

NTUA. Physics Department, National Technical University of Athens. June IPRD10,, Siena, Italy S. Maltezos SIENA ITALY NTUA SIENA ITALY ATMOSPHERIC MONITORING FOR VERY HIGH ENERGY GAMMA RAY CHERENKOV TELESCOPES BASED ON HSRL: DEVELOPMENT OF HIGH ACCURACY NON-INVASIVE ETALON CHARACTERIZATION TECHNIQUES S. Maltezos,, E.

More information

Analysis of Spacecraft Thermal Stability

Analysis of Spacecraft Thermal Stability Analysis of Spacecraft Thermal Stability Bryan Shaughnessy Oxfordshire, OX11 0QX, UK. Tel: +44 (0)1235 445061 Fax: +44 (0)1235 445848 e-mail: b.m.shaughnessy@rl.ac.uk 15 th European Workshop on Thermal

More information

Physics Overview. Assessments Assessments Adopted from course materials Teacher-created assessments Standard Physical Science

Physics Overview. Assessments Assessments Adopted from course materials Teacher-created assessments Standard Physical Science Physics Curriculum Physics Overview Course Description Physics is the study of the physical world and is a mathematical application of science. The study includes an investigation of translational and

More information

Science. Circular Motion. Atomic Structure and Nuclear Chemistry. Kinematics; Motion in One and Two Dimensions

Science. Circular Motion. Atomic Structure and Nuclear Chemistry. Kinematics; Motion in One and Two Dimensions Inquiry -P-1.1 -P-1.2 -P-1.3 -P-1.4 -P-1.5 -P-1.6 -P-1.7 -P-1.8 -P-1.9 -P-2.1 -P-1.1 -P-2.1 -P-2.2 -P-2.3 Circular Motion Use appropriate safety procedures when conducting investigations. Use appropriate

More information

An x-ray image of teeth. Can you see the filling?

An x-ray image of teeth. Can you see the filling? X-Rays APA National Aeronautics and Space Administration, Science Mission Directorate. (2010). X-Rays. Retrieved December 12, 2012, from Mission:Science website: http://missionscience.nasa.gov /ems/11_xrays.html

More information

Webster Cash University of Colorado. X-ray Interferometry

Webster Cash University of Colorado. X-ray Interferometry Webster Cash University of Colorado X-ray Interferometry Co-Investigators Steve Kahn - Columbia University Mark Schattenburg - MIT David Windt - Lucent (Bell-Labs) Outline of Presentation Science Potential

More information

Part 12- Physics Paper 1 Atomic Structure Application Questions Combined Science

Part 12- Physics Paper 1 Atomic Structure Application Questions Combined Science Part 12- Physics Paper 1 Atomic Structure Application Questions Combined Science Internal energy and energy transfers Internal energy and energy transfers Changes of state and the particle model Particle

More information

Large Optic Capability, Impact on the Global Market. by Richard Freeman

Large Optic Capability, Impact on the Global Market. by Richard Freeman Large Optic Capability, Impact on the Global Market by Richard Freeman Large Optic Capability, Impact on the Global Market Large Optic Capability, Impact on the Global Market Significant!! The Development

More information

CRYOGENIC CONDUCTION COOLING TEST OF REMOVABLE PANEL MOCK-UP FOR ITER CRYOSTAT THERMAL SHIELD

CRYOGENIC CONDUCTION COOLING TEST OF REMOVABLE PANEL MOCK-UP FOR ITER CRYOSTAT THERMAL SHIELD CRYOGENIC CONDUCTION COOLING TEST OF REMOVABLE PANEL MOCK-UP FOR ITER CRYOSTAT THERMAL SHIELD K. Nam, a D. K. Kang, a W. Chung, a C. H. Noh, a J. Yu, b N. I. Her, b C. Hamlyn-Harris, b Y. Utin, b and K.

More information

KINETIC BOOKS PHYSICS CORRELATED TO SOUTH CAROLINA PHYSICS STANDARDS CORRELATION

KINETIC BOOKS PHYSICS CORRELATED TO SOUTH CAROLINA PHYSICS STANDARDS CORRELATION Virtual Standard P-1: The student will demonstrate an understanding of how scientific inquiry and technological design, including mathematical analysis, can be used appropriately to pose questions, seek

More information

Testing the nature of astrophysical black hole candidates. Cosimo Bambi (Fudan University, Shanghai)

Testing the nature of astrophysical black hole candidates. Cosimo Bambi (Fudan University, Shanghai) Testing the nature of astrophysical black hole candidates Cosimo Bambi (Fudan University, Shanghai) 8 June 2013, Annual Meeting of the Physics Department Fudan University, Shanghai Tests of General Relativity

More information

V. 3. Development of an Accelerator Beam Loss Monitor Using an Optical Fiber

V. 3. Development of an Accelerator Beam Loss Monitor Using an Optical Fiber CYRIC Annual Report 2001 V. 3. Development of an Accelerator Beam Loss Monitor Using an Optical Fiber Kawata N. Baba M. Kato M.*, Miura T.**, and Yamadera A.***, Cyclotron and Radioisotope Center, Tohoku

More information

Space Physics Questions CfE

Space Physics Questions CfE Space Physics Questions CfE 1) Write down the definitions of the following: a) Moon b) Planet c) Sun d) Star e) Solar System f) Exoplanet g) Galaxy h) Universe. 2) What is cosmology the study of? 3) a)

More information

Presentation by Indian Delegation. to 49 th STSC UNCOPUOS. February 2012 Vienna

Presentation by Indian Delegation. to 49 th STSC UNCOPUOS. February 2012 Vienna Presentation by Indian Delegation to 49 th STSC UNCOPUOS February 2012 Vienna ASTROSAT Astrosat is India s first dedicated multiwavelength astronomy satellite with a capability to observe target sources

More information

The Nature of Science

The Nature of Science Chapter 1 Earth Science Lesson 1 The Nature of Science Main idea: Earth science encompasses five areas of study: astronomy, meteorology, geology oceanography, and environmental science. Earth has four

More information

Part 12- Physics Paper 1 Atomic Structure Application Questions Triple Science

Part 12- Physics Paper 1 Atomic Structure Application Questions Triple Science Part 12- Physics Paper 1 Atomic Structure Application Questions Triple Science Internal energy and energy transfers Internal energy and energy transfers Changes of state and the particle model Particle

More information

The James Webb Space Telescope

The James Webb Space Telescope The Session: ENGINEERING THE SEARCH FOR EARTH-LIKE EXOPLANETS Author: Amy Lo, Northrop Grumman Aerospace Systems Abstract NASA s is the premier space telescope of its time. Set to launch in Oct. 2018,

More information

Phys 100 Astronomy (Dr. Ilias Fernini) Review Questions for Chapter 5

Phys 100 Astronomy (Dr. Ilias Fernini) Review Questions for Chapter 5 Phys 100 Astronomy (Dr. Ilias Fernini) Review Questions for Chapter 5 MULTIPLE CHOICE 1. What is the wavelength of the longest wavelength light visible to the human eye? a. 400 nm b. 4000 nm c. 7000 nm

More information

AN OVERVIEW OF LIGO Adapted from material developed by Brock Wells Robert L. Olds Junior High School, Connell, WA August 2001

AN OVERVIEW OF LIGO Adapted from material developed by Brock Wells Robert L. Olds Junior High School, Connell, WA August 2001 AN OVERVIEW OF LIGO Adapted from material developed by Brock Wells Robert L. Olds Junior High School, Connell, WA August 2001 The purpose of this guide is to provide background about the LIGO project at

More information

Gravitational Wave Astronomy. Lee Lindblom California Institute of Technology

Gravitational Wave Astronomy. Lee Lindblom California Institute of Technology Gravitational Wave Astronomy Lee Lindblom California Institute of Technology Los Angeles Valley College Astronomy Group 20 May 2007 What is Einstein s picture of gravity? What are gravitational waves?

More information

Planetary Science: Investigations 9-10 I-Check Quiz STUDY GUIDE- ANSWER KEY Name HR Date

Planetary Science: Investigations 9-10 I-Check Quiz STUDY GUIDE- ANSWER KEY Name HR Date 1. How are different types of radiation arranged along the electromagnetic spectrum? A. By how fast they travel incorrect answer B. By their sources incorrect answer C. By the amount of energy they carry

More information

Universe. Chapter 6. Optics and Telescopes 8/12/2015. By reading this chapter, you will learn. Tenth Edition

Universe. Chapter 6. Optics and Telescopes 8/12/2015. By reading this chapter, you will learn. Tenth Edition Roger Freedman Robert Geller William Kaufmann III Universe Tenth Edition Chapter 6 Optics and Telescopes By reading this chapter, you will learn 6 1 How a refracting telescope uses a lens to form an image

More information

Astronomy A BEGINNER S GUIDE TO THE UNIVERSE EIGHTH EDITION

Astronomy A BEGINNER S GUIDE TO THE UNIVERSE EIGHTH EDITION Astronomy A BEGINNER S GUIDE TO THE UNIVERSE EIGHTH EDITION CHAPTER 3 Telescopes Lecture Presentation 3.0 Imaging the universe Our original observations of the universe depended on our eyes! What other

More information

SOFIA Telescope Manufacturing - Lessons Learned

SOFIA Telescope Manufacturing - Lessons Learned SOFIA Telescope Manufacturing - Lessons Learned Hans J. Kaercher, Senior Telescope Engineer MT Mechatronics GmbH, Mainz, Germany hans.kaercher@mt-mechatronics.de 1 Experience with Telescopes at Exposed

More information

MAGNETISM QUIZ MAGNETISM

MAGNETISM QUIZ MAGNETISM MAGNETISM QUIZ MAGNETISM 1. What force steers particles in a supercollider? A. Centrifugal B. Electric C. Magnetic D. Gravity 2. What can we learn from the paths of charged particles after a supercollider

More information

METIS- ESA Solar Orbiter Mission: internal straylight analysis

METIS- ESA Solar Orbiter Mission: internal straylight analysis METIS- ESA Solar Orbiter Mission: internal straylight analysis E. Verroi, V. Da Deppo, G. Naletto, S. Fineschi, E. Antonucci University of Padova (Italy) CNR-Institute for Photonics and Nanotechnologies

More information

Exoplanets Direct imaging. Direct method of exoplanet detection. Direct imaging: observational challenges

Exoplanets Direct imaging. Direct method of exoplanet detection. Direct imaging: observational challenges Black body flux (in units 10-26 W m -2 Hz -1 ) of some Solar System bodies as seen from 10 pc. A putative hot Jupiter is also shown. The planets have two peaks in their spectra. The short-wavelength peak

More information

Telescopes, Observatories, Data Collection

Telescopes, Observatories, Data Collection Telescopes, Observatories, Data Collection Telescopes 1 Astronomy : observational science only input is the light received different telescopes, different wavelengths of light lab experiments with spectroscopy,

More information

Astronomical Experiments for the Chang E-2 Project

Astronomical Experiments for the Chang E-2 Project Astronomical Experiments for the Chang E-2 Project Maohai Huang 1, Xiaojun Jiang 1, and Yihua Yan 1 1 National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road,Chaoyang District,

More information

Multi-aperture miniaturized star sensors, modular building blocks for small satellite AOCS systems

Multi-aperture miniaturized star sensors, modular building blocks for small satellite AOCS systems Multi-aperture miniaturized star sensors, modular building blocks for small satellite AOCS systems Jeroen Rotteveel ISIS Innovative Solutions In Space BV Rotterdamseweg 380, 2629HG Delft, The Netherlands;

More information

Solar System Exploration in Germany

Solar System Exploration in Germany Solar System Exploration in Germany German Space Program (Key points) Formation and development of the Solar System Formation of stars and planets Comparison of terrestrial planets with Earth The Sun and

More information

Astronomical Tools. Optics Telescope Design Optical Telescopes Radio Telescopes Infrared Telescopes X Ray Telescopes Gamma Ray Telescopes

Astronomical Tools. Optics Telescope Design Optical Telescopes Radio Telescopes Infrared Telescopes X Ray Telescopes Gamma Ray Telescopes Astronomical Tools Optics Telescope Design Optical Telescopes Radio Telescopes Infrared Telescopes X Ray Telescopes Gamma Ray Telescopes Laws of Refraction and Reflection Law of Refraction n 1 sin θ 1

More information

A FINITE VOLUME-BASED NETWORK METHOD FOR THE PREDICTION OF HEAT, MASS AND MOMENTUM TRANSFER IN A PEBBLE BED REACTOR

A FINITE VOLUME-BASED NETWORK METHOD FOR THE PREDICTION OF HEAT, MASS AND MOMENTUM TRANSFER IN A PEBBLE BED REACTOR A FINITE VOLUME-BASED NETWORK METHOD FOR THE PREDICTION OF HEAT, MASS AND MOMENTUM TRANSFER IN A PEBBLE BED REACTOR GP Greyvenstein and HJ van Antwerpen Energy Systems Research North-West University, Private

More information

ASTR 2310: Chapter 6

ASTR 2310: Chapter 6 ASTR 231: Chapter 6 Astronomical Detection of Light The Telescope as a Camera Refraction and Reflection Telescopes Quality of Images Astronomical Instruments and Detectors Observations and Photon Counting

More information

Astronomy 114. Lecture 27: The Galaxy. Martin D. Weinberg. UMass/Astronomy Department

Astronomy 114. Lecture 27: The Galaxy. Martin D. Weinberg. UMass/Astronomy Department Astronomy 114 Lecture 27: The Galaxy Martin D. Weinberg weinberg@astro.umass.edu UMass/Astronomy Department A114: Lecture 27 18 Apr 2007 Read: Ch. 25,26 Astronomy 114 1/23 Announcements Quiz #2: we re

More information

Chandra Fun Facts. Chandra Fun Facts. Chandra Fun Facts. Chandra Fun Facts. Chandra Fun Facts. Chandra Fun Facts

Chandra Fun Facts. Chandra Fun Facts. Chandra Fun Facts. Chandra Fun Facts. Chandra Fun Facts. Chandra Fun Facts What Space Shuttle was launched aboard? was launched aboard Space Shuttle Columbia on July 23, 1999 from the Kennedy Space Center in Florida. How high does orbit? flies more than 1/3 of the way to the

More information

1-1: Introduction to the Opera-3d software

1-1: Introduction to the Opera-3d software Power Conversion & Electromechanical Devices Medical Physics & Science Applications Transportation Power Systems 1-1: Introduction to the Opera-3d software OPERA-3d What is OPERA-3d? Structure of the package

More information

Unit 2 Particles and Waves

Unit 2 Particles and Waves North Berwick High School Higher Physics Department of Physics Unit 2 Particles and Waves Section 7 Spectra Section 7 Spectra Note Making Make a dictionary with the meanings of any new words. Irradiance

More information

Lecture Outlines. Chapter 5. Astronomy Today 8th Edition Chaisson/McMillan Pearson Education, Inc.

Lecture Outlines. Chapter 5. Astronomy Today 8th Edition Chaisson/McMillan Pearson Education, Inc. Lecture Outlines Chapter 5 Astronomy Today 8th Edition Chaisson/McMillan Chapter 5 Telescopes Units of Chapter 5 5.1 Optical Telescopes 5.2 Telescope Size 5.3 Images and Detectors 5.4 High-Resolution Astronomy

More information