18.1 Development of a Commercial Spaceport
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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]. -
The SKYLON Spaceplane
The SKYLON Spaceplane Borg K.⇤ and Matula E.⇤ University of Colorado, Boulder, CO, 80309, USA This report outlines the major technical aspects of the SKYLON spaceplane as a final project for the ASEN 5053 class. The SKYLON spaceplane is designed as a single stage to orbit vehicle capable of lifting 15 mT to LEO from a 5.5 km runway and returning to land at the same location. It is powered by a unique engine design that combines an air- breathing and rocket mode into a single engine. This is achieved through the use of a novel lightweight heat exchanger that has been demonstrated on a reduced scale. The program has received funding from the UK government and ESA to build a full scale prototype of the engine as it’s next step. The project is technically feasible but will need to overcome some manufacturing issues and high start-up costs. This report is not intended for publication or commercial use. Nomenclature SSTO Single Stage To Orbit REL Reaction Engines Ltd UK United Kingdom LEO Low Earth Orbit SABRE Synergetic Air-Breathing Rocket Engine SOMA SKYLON Orbital Maneuvering Assembly HOTOL Horizontal Take-O↵and Landing NASP National Aerospace Program GT OW Gross Take-O↵Weight MECO Main Engine Cut-O↵ LACE Liquid Air Cooled Engine RCS Reaction Control System MLI Multi-Layer Insulation mT Tonne I. Introduction The SKYLON spaceplane is a single stage to orbit concept vehicle being developed by Reaction Engines Ltd in the United Kingdom. It is designed to take o↵and land on a runway delivering 15 mT of payload into LEO, in the current D-1 configuration. -
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. -
Boarding the Spaceplane by Roger D
PageMark-Color-Comp Job Name: 546280_SpaceTimes_Oct2015 ❏ OK to proceed PDF Page: 01_24_SpaceTimes_Oct2015.p4.pdf ❏ Make corrections and proceed Process Plan: VP.MultiPage.PDF Date: 15-10-01 ❏ Make corrections and show another proof Time: 15:28:48 Signed: ___________________ Date: ______ Operator: ____________________________ Boarding the Spaceplane by Roger D. Launius During the administration of President Ronald Reagan, senior government officials began to discuss the possibility of developing an “Orient Express,” a hybrid air and spaceplane that could carry ordinary people between New York City and Tokyo in about one hour. How is this possible? Actually, the concept is quite simple: Develop an aerospace plane that can take off like a conventional jetliner from an ordinary runway. Flying supersonic, it reaches an altitude of 45,000-50,000 feet, where the pilots start scramjet engines, a jet technology that has the potential to push jetcraft to hypersonic speeds. The spaceplane rises to the edge of space and darts to the opposite side of the globe, where the process is reversed, and the vehicle lands like a conventional airplane. It never reaches orbit, but technically it flies in space. The experience is similar to orbital flight, except for the shorter time. Artist concept of the X-37 advanced technology flight demonstrator re-entering Earth’s atmosphere. The X-37 was intended as a testbed for dozens of advanced structural, propulsion, and operational technologies that could dramatically lower the cost of future reusable launch vehicles. (Source: NASA) 4 SPACE TIMES • September/October 2015 PageMark-Color-Comp Job Name: 546280_SpaceTimes_Oct2015 ❏ OK to proceed PDF Page: 01_24_SpaceTimes_Oct2015.p5.pdf ❏ Make corrections and proceed Process Plan: VP.MultiPage.PDF Date: 15-10-01 ❏ Make corrections and show another proof Time: 15:28:48 Signed: ___________________ Date: ______ Operator: ____________________________ The spaceplane concept has long been a staple of dreams of spaceflight. -
Space Planes and Space Tourism: the Industry and the Regulation of Its Safety
Space Planes and Space Tourism: The Industry and the Regulation of its Safety A Research Study Prepared by Dr. Joseph N. Pelton Director, Space & Advanced Communications Research Institute George Washington University George Washington University SACRI Research Study 1 Table of Contents Executive Summary…………………………………………………… p 4-14 1.0 Introduction…………………………………………………………………….. p 16-26 2.0 Methodology…………………………………………………………………….. p 26-28 3.0 Background and History……………………………………………………….. p 28-34 4.0 US Regulations and Government Programs………………………………….. p 34-35 4.1 NASA’s Legislative Mandate and the New Space Vision………….……. p 35-36 4.2 NASA Safety Practices in Comparison to the FAA……….…………….. p 36-37 4.3 New US Legislation to Regulate and Control Private Space Ventures… p 37 4.3.1 Status of Legislation and Pending FAA Draft Regulations……….. p 37-38 4.3.2 The New Role of Prizes in Space Development…………………….. p 38-40 4.3.3 Implications of Private Space Ventures…………………………….. p 41-42 4.4 International Efforts to Regulate Private Space Systems………………… p 42 4.4.1 International Association for the Advancement of Space Safety… p 42-43 4.4.2 The International Telecommunications Union (ITU)…………….. p 43-44 4.4.3 The Committee on the Peaceful Uses of Outer Space (COPUOS).. p 44 4.4.4 The European Aviation Safety Agency…………………………….. p 44-45 4.4.5 Review of International Treaties Involving Space………………… p 45 4.4.6 The ICAO -The Best Way Forward for International Regulation.. p 45-47 5.0 Key Efforts to Estimate the Size of a Private Space Tourism Business……… p 47 5.1. -
Golden Age of Spaceflight?
1 Pre-Publication DRAFT When will we see a Golden Age of Spaceflight? Gregg Maryniak1 Executive Director X PRIZE Foundation St. Louis, Missouri Introduction The period of time between the World Wars is often referred to within the flying community as the “Golden Age of Aviation.” During this period of time, aviation changed from a largely experimental activity to a widely accepted means of transportation. Public attitudes towards flying also changed dramatically. Towards the end of this period aircraft such as the DC-3 were developed and deployed. The foundations of the present air traffic control system also were created during this time. In short, aviation began to be a commercially sustainable industry. Human spaceflight marks its 40th anniversary in 2001. It is clear that spaceflight and in particular, human spaceflight have not yet achieved the same large-scale commercial advances in their first 40 years as were seen in aviation. This paper considers the contrasts and parallels between aviation and spaceflight and explores whether some of the same factors that advanced aviation might lead to a Golden Age of Spaceflight in the near future. Parallels between Aviation and Space A customary lament among space advocates is that commercial spaceflight has failed to develop at the pace experienced by aviation. Wildly inappropriate parallels have often been drawn between space developments and aviation history. One example is the reference to the Space Transportation System ( the Space Shuttle) as “the DC-3 of space.” Yet there clearly are parallels between spaceflight and aviation. Both human flight and spaceflight were considered unattainable. Both contained inherent risk. -
The Uk Government Review of Potential Spaceplane Operations and Certification in in the Uk
THE UK GOVERNMENT REVIEW OF POTENTIAL SPACEPLANE OPERATIONS AND CERTIFICATION IN IN THE UK ICAO Jerry Stubbs UK CAA March 2015 1 Government request . In August 2012, the Government tasked the Civil Aviation Authority to undertake a detailed review to better understand the operational requirements of the commercial spaceplane industry. 2 Review Objectives . To assess the extent to which UK can support safe spaceplane operations. To develop options for the certification of spaceplanes, engines and associated systems. To identify key characteristics and potential locations of a spaceport. To develop an understanding of the future market for spaceplane operations. 3 Job Done . Review was carried out in partnership with the UKSA and with the support of Industry . A High level Summary document was presented to Government on 31st March 2014. The Detailed Technical report was formally presented at the Space Day Farnborough – 15th July 2014. Government announced a public consultation on the choice of potential spaceport locations – now complete. UK signed a Memorandum of Cooperation with FAA AST 4 Review documents: . http://www.caa.co.uk/docs/33/CAP1198_spaceplane_certifica tion_and_operations_summary.pdf . http://www.caa.co.uk/docs/33/CAP1189_UK_Government_Re view_of_commercial_spaceplane_certification_and_operatio ns_technical_report.pdf 5 Regulation of Sub-Orbital Spaceplanes: UK Legal Considerations . Sub-orbital spaceplanes are considered as ‘aircraft’ by the UK Government. Therefore EASA aviation legislation applies….. But: . Commercial sub-orbital spaceplanes are new, currently none in service, some are being tested and only likely to exist in relatively small numbers for the foreseeable future. Therefore UK Government currently considers spaceplanes as ‘Experimental’ and under the terms of the EASA Basic Regulation are Annex II aircraft and revert to National regulation. -
In Search of Spaceplanes Beyond Offering the Advantage of Within 12 Hours
US Strategic Command, the “own- ticularly on propulsion and vehicle er” of military space operations and control concepts. The service last sum- The Air Force has an urgent need for hypersonic, long-range, the global strike mission, has estab- mer asked US industry to turn in pro- transatmospheric vehicles. lished the requirement for a space- posals and concepts this fall. plane. This fall, the Air Force and USAF wants to build the means to NASA artist’s conception the Defense Advanced Research attack any target on the globe within Projects Agency began accepting 12 hours of an order to do so. That industry proposals for a project that requirement stems from an April 2003 in 2025 would produce a spaceplane— Air Staff study titled “Long-Range one that may look much like the Global Precision Engagement.” In defunct National Aerospace Plane it, the Air Force—working with the conceptualized in the 1980s. Joint Staff and Office of the Secre- tary of Defense—put strike capa- To Mach 15 bilities into three categories: prompt The new craft, which is described global strike, prompt theater strike, as a Hypersonic Cruise Vehicle (HCV), and persistent area strike. would be capable both of launching USAF believes the products of satellites and deploying weapons. Falcon will fulfill—to a great de- Plans call for it to fly at speeds up to gree—the prompt global strike ele- Mach 15 and carry a mix of weapons ment. The ability to conduct prompt comparable to the load carried by global strike would dissuade or de- one of today’s fighter aircraft. -
21St Century Spaceplanes and Space Expeditionary Forces: Pivotal Capability for a Third Offset Strategy a White Paper February 2017 Executive Summary
21st Century Spaceplanes and Space Expeditionary Forces: Pivotal Capability for a Third Offset Strategy A White Paper February 2017 Executive Summary. Reusable spaceplanes offer a third offset strategy to the U.S. that builds on the first and second offsets of nuclear weapons followed by precision navigation, munitions and stealth. Military space systems today are satellites that are large, expensive, and typically take many years to develop, launch and employ. They are also very effective at their intended function; however, that effectiveness is also destabilizing in that it is motivating foreign nations to develop and potentially employ anti-satellite (ASAT) systems that would deny the U.S. the advantage of its space systems. Today, the U.S. is heavily dependent on space capabilities, as is the U.S. public, even as foreign threats to U.S. space systems have grown precipitously. Reusable spaceplanes are stabilizing in that they can responsively and routinely replenish satellites to any orbit, while also enabling rapid access to any part of the world – capabilities seminal to the Air Force vision of Global Vigilance…Global Reach…Global Power. Spaceplane attributes like launch on demand, routine space access and low flight costs enable many options for global reach, whether via “aircraft-like” sorties of spaceplanes with sensor suites or by launching satellites into constellations. Sorties with fully reusable spaceplanes enable overflight in a manner akin to past SR-71 flights, except they enable global reach at four nautical miles (nm) per second while accessing any point on earth, and most geographic locations in less than an hour. -
Future Military Space from Procurement to the Tactical Fight
MONOGRAPH Future Military Space From Procurement to the Tactical Fight MAJ JUSTIN H. DEIFEL, USAF MAJ NICHOLAS M. SOMERMAN, USAF MAJ MARK D. THIEME, USA General Issue Current space acquisition, vehicle processing, and operations are too cumber- some and expensive to meet future emerging war fighter needs. The cost associ- ated with placing assets into orbit has been the greatest problem to the United States (US) fully recognizing its potential in space. With the emergence of com- mercially available reusable launch vehicles, the military must consider the pos- sibility of building an internal space lift capability as a core competency. Also, the military must develop and integrate new capabilities from space that will enable strategic capabilities, down to tactical war fighter implementation. Launch costs currently represent a third to half the cost of fielding a space system.1 Additionally, the current bureaucratic model for the Department of De- fense (DOD) space architecture does not enable a rapid approach to space for the US to gain space supremacy and prevent further loss of space superiority. Key hurdles must be removed and new methods utilized to accomplish this goal. This process requires a change in acquisitions, operations, doctrine, and organizational structure. Requirements for space systems are developed on a five to ten-year time hori- zon, which does not allow the development of systems that can be utilized on demand in an area of responsibility (AOR). New systems must be developed that can be deployed on demand to AORs and utilized by ground, sea, air, cyber, and space forces. Problem Statement Space access and capabilities are rapidly evolving, and the US military must pos- ture itself to utilize these capabilities to protect and defend US national security. -
Seeking a Human Spaceflight Program Worthy of a Great Nation
SEEKING A HUMAN SPACEFLIGHT PROGRAM WORTHY OF A GREAT NATION Review of U.S. HUMAN SPACEFLIGHT Plans Committee Review of U.S. Human Spaceflight Plans Committee 1 SEEKING A HUMAN SPACEFLIGHT PROGRAM WORTHY OF A GREAT NATION 2 Review of U.S. Human Spaceflight Plans Committee SEEKING A HUMAN SPACEFLIGHT PROGRAM WORTHY OF A GREAT NATION “We choose...to do [these] things, not because they are easy, but because they are hard...” John F. Kennedy September 12, 1962 Review of U.S. Human Spaceflight Plans Committee 3 SEEKING A HUMAN SPACEFLIGHT PROGRAM WORTHY OF A GREAT NATION Table of Contents Preface .......................... ...................................................................................................................................... 7 Executive Summary ..... ...................................................................................................................................... 9 Chapter 1.0 Introduction ............................................................................................................................... 19 Chapter 2.0 U.S. Human Spaceflight: Historical Review ............................................................................ 27 Chapter 3.0 Goals and Future Destinations for Exploration ........................................................................ 33 3.1 Goals for Exploration ............................................................................................................... 33 3.2 Overview of Destinations and Approach ................................................................................. -
Soviet Reusable Space Systems Program: Implications for Space Operations in the 1990S
) (I ' ·-·.;;;;:, .. Dire.ctorate of . ttJ _)\ Intelligence . G0 Soviet Reusable Space Systems Program: Implications for Space Operations in the 1990s An Intelligence Assessment SOV 88-10061 sw 88-/IJOj6 Stpu'"hu J9RR Copy Warning Notice Intelligence Sources or Methods Involved (WNINTEL) National &curity Unauthorized Disclosure Information Subject to Criminal Sanctions Oissc:mination Control Abbr~riations NOFORN (NFJ Not releasable to foreien nationals NOSONTR~_CT_CN_C_I ___~N_o_t~re_lc_•_s•_b_le_t~o_c_M_l~rz~~-o_rs_o.,.r~c_o~nl_rz_c~lo_r~/c_o_ns_u_h_z_nt_s PROP IN (PRJ Caution-proprietary inform;.tion involved OR CON (OCJ Dissemination and Cltraction of inform.1tion ---···----------,--,---,---.,.---------,-----controlled by oricinator REl___ This inform3.tion h.u been :~uthorizcd for release to ... ___________,_ __ W_N ______ --:----- WNI ~TEL-Intcllia:cncc sources or mel hods involved A microfiche copy o( I his docu- Clauillcd bl men! is available front OIR/ Declassify: OADR DLB (~82-7177~ printed copies Derived from muhiplc sources from CPAS/IMC(~&l-HOJ; or AIM request to uscrid CPASIMCJ. Rceulu rcccip! of 01 reports can be am need chrouch CPAS/IMC. All material on this ~r:c . --·-------------------- is Unclassified. ') / ' Directorate or lntdligrocc Soviet Reusable Space Systems Program: Implications for Space Operations in the 1990s An lntdligcnce Assessment This paper was prepared b ,Qflicc of Soviet Anal)'sis. an<'.- ~f Science and Weapons Rescare #:ontributions fro. t?_o~ . Comments znd queries arc welcome and may be dircctcdl\0 . or to . USWR. J yrf sov 88-10061 SWS8-100l6 Scpumba 1933 I ' Soviet Reusable Space Systems Program: Implications for Space Operations in the_l990! Key Judgments The Soviets arc developing at least one, and possibly two, reusable space llffurmation availabl~ systems.