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Analysis of Narrow-Line Laser Cooling and Trapping of Sr Atoms in Microgravity Environments
applied sciences Article Analysis of Narrow-Line Laser Cooling and Trapping of Sr Atoms in Microgravity Environments Jie Ren 1,2, Hui Liu 3,* , Xiaotong Lu 1,2 and Hong Chang 1,2,* 1 CAS Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Xi’an 710600, China; [email protected] (J.R.); [email protected] (X.L.) 2 School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China 3 State Key Laboratory of Photoelectric Technology and Functional Materials, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi’an 710069, China * Correspondence: [email protected] (H.L.); [email protected] (H.C.) Received: 7 June 2020; Accepted: 15 July 2020; Published: 17 July 2020 Abstract: Obtaining ultracold alkaline earth(-like) atoms in space encounters the problem of performing narrow-line laser cooling in microgravity environments (µ-gEs). This paper reports an analysis of the magneto-optical trap (MOT) based on the narrow-line transition in 88Sr, while paying special attention to the role of the gravity. This analysis suggests the MOTs based on narrow-line transitions cannot be cold and dense enough in a µ-gE. We thus propose a strategy: that one can use a dual-frequency MOT to realize a low-temperature, high density, and high transfer efficiency, narrow-line red MOT in µ-gEs. Keywords: lasering cooling and trapping; microgravity; Monte Carlo simulation; optical lattice clocks; in space 1. Introduction Great efforts have been made in recent decades to push cold atoms into microgravity environments [1]. -
A Feasibility Study for Using Commercial Off the Shelf (COTS)
University of Tennessee, Knoxville TRACE: Tennessee Research and Creative Exchange Masters Theses Graduate School 8-2011 A Feasibility Study for Using Commercial Off The Shelf (COTS) Hardware for Meeting NASA’s Need for a Commercial Orbital Transportation Services (COTS) to the International Space Station - [COTS]2 Chad Lee Davis University of Tennessee - Knoxville, [email protected] Follow this and additional works at: https://trace.tennessee.edu/utk_gradthes Part of the Aerodynamics and Fluid Mechanics Commons, Other Aerospace Engineering Commons, and the Space Vehicles Commons Recommended Citation Davis, Chad Lee, "A Feasibility Study for Using Commercial Off The Shelf (COTS) Hardware for Meeting NASA’s Need for a Commercial Orbital Transportation Services (COTS) to the International Space Station - [COTS]2. " Master's Thesis, University of Tennessee, 2011. https://trace.tennessee.edu/utk_gradthes/965 This Thesis is brought to you for free and open access by the Graduate School at TRACE: Tennessee Research and Creative Exchange. It has been accepted for inclusion in Masters Theses by an authorized administrator of TRACE: Tennessee Research and Creative Exchange. For more information, please contact [email protected]. To the Graduate Council: I am submitting herewith a thesis written by Chad Lee Davis entitled "A Feasibility Study for Using Commercial Off The Shelf (COTS) Hardware for Meeting NASA’s Need for a Commercial Orbital Transportation Services (COTS) to the International Space Station - [COTS]2." I have examined the final electronic copy of this thesis for form and content and recommend that it be accepted in partial fulfillment of the equirr ements for the degree of Master of Science, with a major in Aerospace Engineering. -
Development of the Crew Dragon ECLSS
ICES-2020-333 Development of the Crew Dragon ECLSS Jason Silverman1, Andrew Irby2, and Theodore Agerton3 Space Exploration Technologies, Hawthorne, California, 90250 SpaceX designed the Crew Dragon spacecraft to be the safest ever flown and to restore the ability of the United States to launch astronauts. One of the key systems required for human flight is the Environmental Control and Life Support System (ECLSS), which was designed to work in concert with the spacesuit and spacecraft. The tight coupling of many subsystems combined with an emphasis on simplicity and fault tolerance created unique challenges and opportunities for the design team. During the development of the crew ECLSS, the Dragon 1 cargo spacecraft flew with a simple ECLSS for animals, providing an opportunity for technology development and the early characterization of system-level behavior. As the ECLSS design matured a series of tests were conducted, including with humans in a prototype capsule in November 2016, the Demo-1 test flight to the ISS in March 2019, and human-in-the-loop ground testing in the Demo-2 capsule in January 2020 before the same vehicle performs a crewed test flight. This paper describes the design and operations of the ECLSS, the development process, and the lessons learned. Nomenclature AC = air conditioning AQM = air quality monitor AVV = active vent valve CCiCap = Commercial Crew Integrated Capability CCtCap = Commercial Crew Transportation Capability CFD = computational fluid dynamics conops = concept of operations COPV = composite overwrapped -
Paper Session III-B - Space Station On-Orbit Assembly and Operation
1991 (28th) Space Achievement: A Global The Space Congress® Proceedings Destiny Apr 25th, 1:00 PM - 4:00 PM Paper Session III-B - Space Station On-Orbit Assembly and Operation L. P. Morata Vice President, Deputy General Manager, McDonnell Douglas Space Systems Company, Huntington Beach CA F. David Riel Deputy Director, System Engineering and Integration, McDonnell Douglas Space Systems Company- Space Station Division Follow this and additional works at: https://commons.erau.edu/space-congress-proceedings Scholarly Commons Citation Morata, L. P. and Riel, F. David, "Paper Session III-B - Space Station On-Orbit Assembly and Operation" (1991). The Space Congress® Proceedings. 9. https://commons.erau.edu/space-congress-proceedings/proceedings-1991-28th/april-25-1991/9 This Event is brought to you for free and open access by the Conferences at Scholarly Commons. It has been accepted for inclusion in The Space Congress® Proceedings by an authorized administrator of Scholarly Commons. For more information, please contact [email protected]. SPACE STATION FREEDOM ASSEMBLY AND OPERATIONS Larry P. Morata Vice President, Deputy Project Manager—DDT&E McDonnell Douglas Space Systems Company-Space Station Division Huntington Beach, California and F. David Kiel Deputy Director, System. Engineering and Integration McDonnell Douglas Space Systems Company-Space Station Division Huntington Beach, California ABSTRACT Eight Man. Crew Capability (EMCC) by 31 December 2000 as shown, in Figure 1. The United States and its international partners are well Recent design, on the way to developing Space Station Freedom which will changes as part: of the SSF program restructure activity have be a very large orbiting facility with many capabilities for altered the Space Station configu ration and design from conducting space operations. -
Final Report of the International Space Station Independent Safety
I Contents Executive Summary........................................................................................ 1 Principal Observations ..................................................................................... 3 Principal Recommendations ............................................................................. 3 1. Introduction..................................................................................................... 5 Charter/Scope ................................................................................................... 5 Approach........................................................................................................... 5 Report Organization ......................................................................................... 5 2. The International Space Station Program.................................................... 7 International Space Station Characteristics..................................................... 8 3. International Space Station Crosscutting Management Functions............ 12 Robust On-Orbit Systems.................................................................................. 12 The Design ........................................................................................................ 12 Verification Requirements ................................................................................ 12 Physical (Fit) Verification ................................................................................ 13 Multi-element Integrated Test.......................................................................... -
7. Operations
7. Operations 7.1 Ground Operations The Exploration Systems Architecture Study (ESAS) team addressed the launch site integra- tion of the exploration systems. The team was fortunate to draw on expertise from members with historical and contemporary human space flight program experience including the Mercury, Gemini, Apollo, Skylab, Apollo Soyuz Test Project, Shuttle, and International Space Station (ISS) programs, as well as from members with ground operations experience reaching back to the Redstone, Jupiter, Pershing, and Titan launch vehicle programs. The team had a wealth of experience in both management and technical responsibilities and was able to draw on recent ground system concepts and other engineering products from the Orbital Space Plane (OSP) and Space Launch Initiative (SLI) programs, diverse X-vehicle projects, and leadership in NASA/Industry/Academia groups such as the Space Propulsion Synergy Team (SPST) and the Advanced Spaceport Technology Working Group (ASTWG). 7.1.1 Ground Operations Summary The physical and functional integration of the proposed exploration architecture elements will occur at the primary launch site at the NASA Kennedy Space Center (KSC). In order to support the ESAS recommendation of the use of a Shuttle-derived Cargo Launch Vehicle (CaLV) and a separate Crew Launch Vehicle (CLV) for lunar missions and the use of a CLV for ISS missions, KSC’s Launch Complex 39 facilities and ground equipment were selected for conversion. Ground-up replacement of the pads, assembly, refurbishment, and/or process- ing facilities was determined to be too costly and time-consuming to design, build, outfit, activate, and certify in a timely manner to support initial test flights leading to an operational CEV/CLV system by 2011. -
Glex-2021 – 6.1.1
Global Space Exploration Conference (GLEX 2021), St Petersburg, Russian Federation, 14-18 June 2021. Copyright ©2021 by Christophe Bonnal (CNES). All rights reserved. GLEX-2021 – 6.1.1 Human spaceflight from Guiana Space Center Ch. Bonnal1* – J-M. Bahu1 – Ph. Berthe2 – J. Bertrand1 – Ch. Bonhomme1 – M. Caporicci2 J-F. Clervoy3 – N. Costedoat4 – E. Coletti5 – G. Collange5 – G. Debas5 – R. Delage6 – J. Droz5 E. Louaas1 – P. Marx8 – B. Muller6 – S. Perezzan1 – I. Quinquis5 – S. Sandrone7 D. Schmitt2 – V. Taponier1 1 CNES Launcher Directorate, Pairs, France – 2 ESA Human & Robotic Exploration Directorate, ESTEC, Noordwijk, Netherlands – 3 Astronaut Novespace, Paris, France – 4CNES Guiana Space Center, Kourou, France 5ArianeGroup, Les Mureaux, France – 6Airbus Defence & Space, Toulouse, France – 7Airbus Defence & Space, Bremen Germany – 8Consultant, Paris, France * Corresponding Author Abstract The use of Space has drastically evolved these last ten years. Tomorrow will see easier and cheaper access to Space, satellite servicing, in-orbit manufacturing, human private spaceflights to ever increasing number of Orbital Stations, road to the Moon, Asteroids, Mars. It seems fundamental to make sure we can rely on robust, reliable, frequent and affordable access to and from LEO with both automatic systems and human missions; such systems are the bricks with which all the future operations in Space will be built. Independent human access to space from Europe for our astronauts is a key to any future in Space. It has been studied in depth since the 80's with Hermes Spaceplane, then through numerous studies, pre- development activities, and demonstrations such as ARD, X38-CRV or IXV, which now allow Europe to reconsider such an endeavor with a much higher confidence. -
Space Station Freedom. a Foothold on the Future. INSTITUTION National Aeronautics and Space Administration, Washington, DC
DOCUMENT RESUME ED 310 939 SE 050 885 AUTHOR David, Leonard TITLE Space Station Freedom. A Foothold on the Future. INSTITUTION National Aeronautics and Space Administration, Washington, DC. Office of Space Sta.:Ion. REPORT NO NP-107/10-88 PUB DATE 89 NOTE 49p.; Colored photographs and drawings may not reproduce well. PUB TYPE Reports - Descriptive (141) EDRS PRICE MF01/PCO2 Plus Postage. DESCRIPTORS *Aerospace Technology; Engineering Technology; Planning; *Satellites (Aerospace); Science Materials; *Science Programs; *Scientific Research; *Space Exploration; *Space Sciences IDENTIFIERS *Space Station ABSTRACT This booklet describes the planning of the space station program. Sections included are: (1) "Introduction"; (2) "A New Era Begins" (discussing scientific experiments on the space station); (3) "Living in Space";(4) "Dreams Fulfilled" (summarizing the history of the space station development, including the skylab and shuttle); (5) "Building a Way Station to Worlds Beyond" (illustrating an approach to building the space station); (6) ''Orbital Mechanics" (discussing the maneuverability of the space station, including robotic application);(7) "Evolving with Versatility" (describing blueprints for expanding a space station); and (8) "Foothold on the Future" (discussing the future plans of the space station program). (YP) **************************************-******************************* * Reproductions supplied by EDRS are the best that can be made * from the original document. *********************************************************************A* -
October 2011 Issue 2
Issue 2 October 2011 All about the Chinese Space Programme GO TAIKONAUTS! Editor’s Note As promised, this issue is delivered as a special issue on the Chinese space station Cover Story programme. The flawless launch of the Tiangong 1 was really ... page 2 Quarterly Report April - June 2011 Launch Events There were two success- ful space launches in the second quarter of 2011. On 10 April 2011 at 4:47:04 Beijing Time, a Long March 3A (Y19) lifted-off from Pad 3 in Xichang Satellite Launch Centre, putting the Beidou IGSO 3 navigation sat- ellite into orbit. It was the first Chinese Dawn of the Chinese Space Station Era space launch of 2011 and the eighth op- A Textbook Launch erational Beidou satellite. The satellite History turned a new page at 21:16:03 Beijing Time on 29 September 2011, entered its working orbit ... page 3 when a Long March 2F (CZ-2F T1) rocket lifted-off from Pad 921 at the Jiu- quan Satellite Launch Centre in China. In contrast with other launch vehicles that took-off from the same pad on previous occasions, ... page 6 Proposal Mutual Rescue Operations Between the On The Spot Tiangong and ISS? Background Touch the Chinese Space Programme in Three Days The ISS began six-crew member opera- Report from the 4th CSA-IAA Conference on Advanced Space Technology tion in 2009, and the U.S. shuttle retired in Shanghai in July 2011. Crew transportation and An Open and International Conference emergency rescue now totally depends To the Chinese space programme and people paying attention to it, early upon the Russian Soyuz vehicle. -
Fachprogramme Raumfahrt
Fachprogramme Raumfahrt Aktualisierung 2002/2003 Raumfahrtmanagement Herausgeber: Deutsches Zentrum für Luft- und Raumfahrt e.V. Raumfahrtmanagement Königswinterer Str. 522 – 524 53227 Bonn-Oberkassel Fachprogramme Raumfahrt Aktualisierung 2002/2003 Gliederung TEIL 1 - ALLGEMEINE ASPEKTE 1. PROGRAMMRAHMEN UND -UMFELD .................................................................................... 5 2. STRUKTUR UND MITTELEINSATZ ........................................................................................... 6 TEIL 2 - FACHPROGRAMME EINFÜHRUNG................................................................................................................... 11 1. FACHPROGRAMM KOMMUNIKATION .................................................................................... 13 2. FACHPROGRAMM NAVIGATION .......................................................................................... 23 3. FACHPROGRAMM ERDBEOBACHTUNG .................................................................................. 31 4. FACHPROGRAMM ERFORSCHUNG DES WELTRAUMS................................................................. 43 5. FACHPROGRAMM FORSCHUNG UNTER WELTRAUMBEDINGUNGEN............................................... 55 6. FACHPROGRAMM RAUMSTATION ........................................................................................ 69 7. FACHPROGRAMM RAUMTRANSPORT .................................................................................... 79 8. FACHPROGRAMM TECHNIK FÜR RAUMFAHRTSYSTEME............................................................. -
Closing Comments
Closing Comments The concept of a Shuttle supporting the assembly of a space station was not an entirely new idea when Space Station Freedom was authorized in 1984. Such concepts had been evaluated during the late 1960s, as the United States and the Soviet Union competed in the race to the Moon. By the early 1970s, the two nations were on more friendly terms and keen to participate in a joint project as Apollo was being phased out and a series of Salyut space stations were being introduced. The American proposal for an Apollo to dock with a Salyut was rejected, as was a proposal to have a Soyuz dock with Skylab. So Apollo docked with Soyuz in the summer of 1975. That program was so successful that talks began almost immediately to assess the pros- pects for a Shuttle-Salyut docking in the early 1980s. In parallel, NASA devised plans for the Shuttle to reactivate Skylab. Neither of these proposals bore fruit. By the early 1980s, the idea of using a Shuttle to assemble and resupply a large space station remained, and would become the lynchpin of the Space Station Freedom before plans for that, too, were revised. By the time of the collapse of the Soviet Union in 1991 the assembly of Mir had been underway for several years. But Russia, which inherited the station and the spacecraft which serviced it, was hard pressed to continue the requisite funding. Looking back two decades to the 1990s, the merger of the American Shuttle and the Russian space station programs seems so logical, since they complemented each other. -
Evaluation of X-38 Crew Return Vehicle Input Control Devices in a Microgravity Environment
NASA/TM--2000-208925 Evaluation of X-38 Crew Return Vehicle Input Control Devices in a Microgravity Environment Kirsten Welge Alicia Moore Ruth Ann Pope Suzette Shivers Longview High School Longview, Texas December 2(X)0 The NASA STI Program Office ... in Profile Since its founding, NASA has been dedicated 'to * CONFERENCE PUBLICATION. the advancement of aeronautics and space Collected papers from scientific and technical science. The NASA Scientific and Technical conferences, symposia, seminars, or other Information (STI) Program Office plays a key meetings sponsored or co-sponsored by NASA. part in helping NASA maintain this important role. * SPECIAL PUBLICATION. Scientific, technical, or historical information from NASA The NASA STI Program Office is operated by programs, projects, and missions, often Langley Research Center, the lead center for concerned with subjects having substantial NASA's scientific and technical information. The public interest. NASA STI Program Office provides access to the NASA STI Database, the largest collection of * TECHNICAL TRANSLATION. aeronautical and space science STI in the world. English-language translations of foreign The Program Office is also NASA's institutional scientific and technical material pertinent to mechanism for disseminating the results of its NASA's mission. research and development activities. These results are published by NASA in the NASA STI Specialized services that complement the STI Report Series, which includes the following Program Office's diverse offerings include report types: creating custom thesauri, building customized databases, organizing and publishing research * TECHNICAL PUBLICATION. Reports results ... even providing videos. of completed research or a major significant phase of research that present the results of For more information about the NASA STI NASA programs and include extensive data or Program Office, see the following: theoretical analysis.