| A Stackelberg Game Approach to Cognitive Radio Network with Anti-Jamming Capability |
10 Oct 2012 |
34 pages |
| Authors:
Gerry Tian; Xin Tian; Dan Shen; Genshe Chen; MICHIGAN TECHNOLOGICAL UNIV HOUGHTON
|
 | We demonstrate numerically and experimentally a conjugated gammadion chiral metamaterial that uniaxially exhibits huge optical activity and circular dichroism, and gives a negative refractive index. This chiral design provides smaller unit cell size and larger chirality compared with other published planar designs. Experiments are performed at GHz frequencies (around 6 GHz) and are in good agreement with the numerical simulations. |
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| Using Optimization to Improve NASA Extravehicular Activity Planning |
Sep 2012 |
129 pages |
| Authors:
Paul W Felker; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF SYSTEMS ENGINEERING
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| Extravehicular Activity (EVA) is a specialized function performed during spaceflights in which two or more astronauts don spacesuits to perform tasks on the exterior of their spacecraft. An extensive and iterative planning process is required to prepare for each highly choreographed EVA operation. The current planning process used by the National Aeronautics and Space Administration (NASA) relies heavily upon time-consuming heuristic approaches by subject matter experts to essentially hand-build each ... |
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| Search and Determine Integrated Environment (SADIE) for Space Situational Awareness |
Sep 2012 |
12 pages |
| Authors:
Chris A Sabol; Alan Segerman; Aaron Hoskins; Bryan Little; Jr Schumacher Paul W; Shannon Coffey; NAVAL RESEARCH LAB WASHINGTON DC
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| A new high performance computing software applications package called the Search and Determine Integrated Environment (SADIE) is being jointly developed and refined by the Air Force and Naval Research Laboratories (AFRL and NRL) to automatically resolve uncorrelated tracks (UCTs) and build a more complete space object catalog for improved Space Situational Awareness (SSA). The motivation for SADIE is to respond to very challenging needs identified by and guidance received from ... |
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| Implementation of National Space Policy on US Air Force End of Life Operations and Orbital Debris Mitigation |
Jun 2012 |
10 pages |
| Authors:
Michael V Nayak; AIR FORCE SPACE DEVELOPMENT AND TEST WING KIRTLAND AFB NM
|
| Recent changes to US space policy regarding the execution of satellite End of Life (EOL) procedures have been driven by the rising significance of the orbital debris problem in Low Earth Orbit (LEO). Therefore current EOL plans are written largely with the aim of reducing long-lasting debris that can linger for decades in the orbit of the defunct satellite. Through an exhaustive discussion of US National, Department of Defense and ... |
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| An Aerospace and Defense Industry Market Index for 1950-2012 and the Connection With Defense Spending |
30 Apr 2012 |
39 pages |
| Authors:
Robert B Williamson; TENNESSEE UNIV KNOXVILLE INST OF NATIONAL DEFENSE BUSINESS
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| The U.S. aerospace and defense industry (ADI) is largely dependent on its U.S. government defense customer. Because of the vital yet specialized nature of that market, the health of the ADI should be assessed periodically to enable government and industry leaders to understand clearly how and to what extent changes to its capacities and capabilities can be forecast and incorporated in their policy deliberations for better decisions. It is widely ... |
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| Gravitational Lens: Deep Space Probe Design |
Mar 2012 |
164 pages |
| Authors:
Berkley R Davis; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
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| A number of interstellar precursor missions have been designed, but they have all made use of unproven future technologies. This research focuses on designing an interstellar precursor mission to the gravitational lens that can be manufactured solely with today's technology. The design includes an examination of trip time and trajectory, a system trade between subsystems, a launch vehicle analysis and an overall spacecraft performance analysis. The trip time was found ... |
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| Solar Power in Space? |
Jan 2012 |
28 pages |
| Authors:
Peter Garretson; AIR UNIV MAXWELL AFB AL STRATEGIC STUDIES QUARTERLY
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| Space-based solar power (SBSP) is a concept for a revolutionary energy system. It involves placing into orbit stupendously large orbital power plants kilometers across which collect the sun s raw energy and beam it down to where it is needed on the earth. In theory, SBSP could scale to meet all of humanity s energy needs, providing virtually unlimited green, renewable power to an energy-hungry world. Most renewable energy schemes ... |
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| Pre-launch Optical Characteristics of the Oculus-ASR Nanosatellite for Attitude and Shape Recognition Experiments |
02 Dec 2011 |
12 pages |
| Authors:
Lyon B King; Philip Hohnstadt; Kelly Feirstine; MICHIGAN TECHNOLOGICAL UNIV HOUGHTON DEPT OF MECHANICAL ENGINEERING AND ENGINEERING MECHANICS
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| Most all objects in Earth orbit, when imaged using all but the largest ground-based telescopes, appear as unresolved point sources of light. Although these unresolved images are featureless it may be possible to determine parameters related to an object s attitude and/or rotation rate by analyzing the spectral and temporal content of reflected sunlight. For instance a faceted rotating object may produce a periodic cycle of bright glints or a ... |
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| Spaceborne Ocean Intelligence Network: SOIN - Fiscal Year 10/11 Year-End Summary |
Oct 2011 |
76 pages |
| Authors:
Darryl Williams; Brendan DeTracey; Paris W Vachon; John Wolfe; Will Perrie; Pierre Larouche; Chris Jones; Joe Buckley; Sean Pecknold; Cristina Tollefsen; DEFENCE RESEARCH AND DEVELOPMENT CANADA OTTAWA (ONTARIO)
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| The Spaceborne Ocean Intelligence Network (SOIN) is a six-year research and operational development project that addresses barriers to developing and implementing oceanographic applications derived from Earth-observation sensors such as RADARSAT-2 and MODIS, capabilities that will be provided by the Polar Epsilon Project, combined with existing AVHRR and MERIS sensor data. The project is divided into two phases. The recently terminated three-year Phase I focused on developing state-of-the-art sea-surface temperature and ... |
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| MIDWEST STRUCTURAL SCIENCES CENTER 2011 ANNUAL REPORT |
Oct 2011 |
35 pages |
| Authors:
William A Dick; ILLINOIS UNIV AT URBANA-CHAMPAIGN MIDWEST STRUCTURAL SCIENCES CENTER
|
| The Midwest Structural Sciences Center is a collaboration between the Structural Sciences Center, Air Vehicles Directorate of the Air Force Research Laboratory (AFRL/RBSM SSC), and a team of faculty, graduate students, and professional staff researchers of the University of Illinois at Urbana-Champaign (UI), Wright State University, University of Cincinnati, and the University of Texas at San Antonio. The team works closely to simulate, model and test structures and materials for ... |
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| Plasma Conditions During the Galaxy 15 Anomaly and the Possibility of ESD from Subsurface Charging (Postprint) |
15 Sep 2011 |
18 pages |
| Authors:
Dale Ferguson; William Denig; Juan Rodriguez; AIR FORCE RESEARCH LAB KIRTLAND AFB NM SPACE VEHICLES DIRECTORATE
|
| We review the fundamentals of spacecraft structure, surface and deep-dielectric charging and investigate the environmental conditions and possible spacecraft interactions at the time of the Galaxy 15 anomaly on April 5, 2010. Geostationary Operational Environmental Satellites (GOES) 14 measurements of 30-600 keV electron fluxes associated with an ongoing geomagnetic substorm showed extremely elevated electron temperatures and densities coincidentally peaking near the time when Galaxy 15 exited eclipse. NASCAP-2k is used ... |
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| Space Domain Awareness (SDA) |
Sep 2011 |
16 pages |
| Authors:
Travis Blake; DEFENSE ADVANCED RESEARCH PROJECTS AGENCY ARLINGTON VA
|
| SST - provides a fundamentally new approach to optical ground based surveillance of space objects the ability to detect an unprecedented number of objects with accuracies and sensitivities beyond that of current sensors. Ibex - demonstrates an advanced SSA data fusion based on SST data and extendable to other current and future sensors capability to dynamically task disparate sensors and efficiently process data to provide actionable information. Space Domain Awareness ... |
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| Joint Space Operations Center (JSpOC) Mission System (JMS) |
Sep 2011 |
9 pages |
| Authors:
Michael Morton; Timothy Roberts; AIR FORCE SPACE COMMAND PETERSON AFB CO
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| US space capabilities benefit the economy, national security, international relationships, scientific discovery, and our quality of life. Realizing these space responsibilities is challenging not only because the space domain is increasingly congested, contested, and competitive but is further complicated by the legacy space situational awareness (SSA) systems approaching end of life and inability to provide the breadth of SSA and command and control (C2) of space forces in this challenging ... |
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| A Search for Optically Faint GEO Debris |
Sep 2011 |
6 pages |
| Authors:
Patrick Seitzer; Susan M Lederer; Edwin S Barker; Heather Cowardin; Kira Abercromby; Jiri Silha; Andrew Burkhardt; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HOUSTON TX LYNDON B JOHNSON SPACE CENTER
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| Existing optical surveys for debris at geosynchronous orbit (GEO) have been conducted with meter class telescopes which have detection limits in the range of 18th-19th magnitude. We report on a new search for optically faint debris at GEO using the 6.5-m Magellan telescope Walter Baade at Las Campanas Observatory in Chile. Our goal is to go as faint as possible and characterize the brightness distribution of debris fainter than R ... |
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| AFSPC A5CS SSA Activities |
Sep 2011 |
4 pages |
| Authors:
Hans Thatcher; AIR FORCE SPACE COMMAND PETERSON AFB CO
|
| With the signing of the National Space Policy in Jun of 2010 and the National Security Space Strategy in January of this year, the Department of Defense and the Air Force have clear direction to preserve vital national security capabilities in space. The ever-growing population of resident space objects necessitates improved Space Situational Awareness (SSA) to ensure safety of flight and enable defensive actions when necessary. The Air Force, through ... |
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| Establishing a Product Baseline for Global Positioning System Satellites through Functional and Physical Configuration Audits |
Sep 2011 |
95 pages |
| Authors:
Travis G Willcox; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Programs without a proper technical baseline will not be able to achieve cost, schedule, and/or performance objectives. The purpose of this thesis is to provide clear steps, methods, guidelines, and suggestions to mature the functional, allocated, and product baselines from the development baseline to the contract baseline for the acquisition of a Global Positioning System (GPS) space segment. Implementation of these recommendations will reduce cost and/or schedule for programs such ... |
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| Enabling the Commercial Space Transportation Industry at the Mid-Atlantic Regional Spaceport |
Sep 2011 |
61 pages |
| Authors:
Nathan J Winters; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| The focus of this paper is on how to energize the space industrial base as directed by the National Security Space Strategy of 2011. Using a case study of the Mid-Atlantic Regional Spaceport (MARS), an analysis of how to enable the commercial space transportation industry will be discussed. A look at previous government ventures that have been privatized, along with the history of commercial space transportation, sets the stage for ... |
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| Reduced Toxicity High Performance Monopropellant |
Sep 2011 |
31 pages |
| Authors:
Adam Brand; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIR/SPACE AND MISSILE PROPULSION DIV/PROPELLANTS BRANCH
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| These briefing charts are an overview of reduced toxicity, high performance monopropellant. Performance of hydrazine limits spacecraft payload, range, lifetime and operational response time. The focus is to replace SOTA Hydrazine with monopropellants based on energy dense ionic liquids. |
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| SPECTRA. September 2011 |
Sep 2011 |
37 pages |
| Authors:
Kathy Parrish; Claire Peachey; NAVAL RESEARCH LAB WASHINGTON DC
|
| This issue of Spectra showcases the past, present, and future of the Naval Research Laboratory's space program. For more than six decades, NRL has been exploring space in fundamental scientific investigations and for military applications, as the timeline starting on page 6 details. It is one of a handful of laboratories with this legacy and with the wide range of capabilities needed for both basic and applied defense research in ... |
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| Technology Horizons: A Vision for Air Force Science and Technology 2010-30 |
Sep 2011 |
239 pages |
| Authors:
CHIEF SCIENTIST (AIR FORCE) WASHINGTON DC
|
| Technology Horizons is our vision for key Air Force science and technology investments over the next decade that will provide us with truly game-changing capabilities to meet our strategic and joint force responsibilities. The coming decades hold high promise for amazing new capabilities across the air, space, and cyber domains. Yet the Air Force and our nation will also be confronted with substantial strategic, technology, and budget challenges. Our greatest ... |
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| Technology Horizons Vision for the Air Force During 2010-2030 (Video) |
Sep 2011 |
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| Authors:
Werner J Dahm; CHIEF SCIENTIST (AIR FORCE) WASHINGTON DC
|
 | This video describes the public release key science and technology areas for the U.S. Air Force over the next two decades that will provide technologically achievable capabilities enabling the Air Force to gain the greatest U.S. Joint force effectiveness in 2030 and beyond. |
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| Assessing Chinese Intentions for the Military Use of the Space Domain |
19 MAY 2011 |
50 pages |
| Authors:
Paul S. Oh; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS SCHOOL OF ADVANCED MILITARY STUDIES
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| The continuing rise of Chinese political and military power has made Americans suspicious of China's intentions in the space domain. For many in the American defense community, the 2007 Anti-Satellite (ASAT) test was the smoking gun that proved China's ultimate desire to challenge American space dominance. Other experts, however, have proposed a more benign intent behind such actions, leading to vigorous debates over Chinese motives and the appropriate American responses. ... |
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| Space Power: A Theory for Sustaining US Security Through the Information Age |
19 MAY 2011 |
52 pages |
| Authors:
Scott F. Swilley; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS SCHOOL OF ADVANCED MILITARY STUDIES
|
| The United States requires a logical and practical space power theory that relates to national interests. This monograph explains how activities in the space domain influence US national interests. The relationship between space power and national interests is the basis to present a new space power theory. Further, the proposed space power theory establishes relationships between the activities in the space domain. The space activities identified as critical to the ... |
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| Space Acquisitions: DOD Delivering New Generations of Satellites, but Space System Acquisition Challenges Remain |
11 MAY 2011 |
35 pages |
| Authors:
Cristina T. Chaplain; GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
|
| Despite decades of significant investment, most of the Department of Defense's (DOD) large space acquisition programs have collectively experienced billions of dollars in cost increases, stretched schedules, and increased technical risks. Significant schedule delays of as much as 9 years have resulted in potential capability gaps in missile warning, military communications, and weather monitoring. These problems persist, with other space acquisition programs still facing challenges in meeting their targets and ... |
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| China's Space Capabilities and Their Regional Security Implications |
18 MAR 2011 |
42 pages |
| Authors:
Wen-Chi Huang; ARMY WAR COLL STRATEGIC STUDIES INST CARLISLE BARRACKS PA
|
| China's space programs have made large strides in the last decade. China has become the third country capable of launching manned space craft after the successful return of the Shenzhou-VI spacecraft. Besides this sensational achievement, China managed to establish a comprehensive satellite network for both military and civilian applications. Its satellite jamming and anti-satellite tests in 2002 and 2007 drew international attention. This dramatic development has significant political, economic, military ... |
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| Additional Cost Transparency and Design Criteria Needed for National Aeronautics and Space Administration (NASA) Projects |
03 Mar 2011 |
14 pages |
| Authors:
Cristina Chaplain; GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
|
| Our work over the past three years has shown that NASA's major projects are frequently approved without evidence of a sound business case--ensuring a match between requirements and resources--and, therefore, cost more and take longer to develop than planned. Our March 2011 assessment found that 13 NASA projects that established baselines prior to fiscal year 2009 had experienced an average cost growth of almost 55 percent, with a combined increase ... |
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| NASA: Assessments of Selected Large-Scale Projects |
Mar 2011 |
105 pages |
| Authors:
Cristina Chaplain; Shelby S Oakley; Jessica M Berkholtz; Richard A Cederholm; Justin D Dunleavy; Laura Geifner; Kristine R Hassinger; Caryn E Kuebler; Jesse Lamarre-Vincent; Kenneth E Patton; GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
|
| GAO assessed 21 NASA projects with a combined life-cycle cost that exceeds $68 billion. Of those 21 projects, 16 had entered the implementation phase where cost and schedule baselines were established. Development costs for the 16 projects had an average growth of $94 million--or 14.6 percent--and schedules grew by an average of 8 months. The total increase in development costs for these projects was $1.5 billion. GAO found that 5 ... |
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| E Pluribus Unum: Strengthening the Air Force Space Command Culture |
21 Feb 2011 |
36 pages |
| Authors:
Carl M Jones; ARMY WAR COLL CARLISLE BARRACKS PA
|
| Space mission areas contribute invaluable information and support essential to the way the United States prepares for, and conducts military operations. The US Air Force, however, is not fostering a culture within Air Force Space Command (AFSPC) that focuses space professionals on space superiority. Cultural rifts among Space Command's three distinct camps (Space Operations, Missile Operations, and Acquisitions) fragment the space cadre. The Space Commission focused on current missions, noting ... |
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| Multifunctional Nanocomposite Structures via Layer-by-Layer Assembly Process |
14 Feb 2011 |
11 pages |
| Authors:
Kelechi C Anyaogu; Nicholas A Kotov; NICO TECHNOLOGIES CORP ANN ARBOR MI
|
| Current report is generated under Phase I STTR award on topic AF09-BT36. The overall goal of this project is to achieve large scale high-throughput manufacturing of multifunctional nanocomposites, which are comparable in physical characteristics to the standard aerospace composites, based on layer-by-layer (LBL) assembly process. To achieve this main objective, we proposed to: (1) construct and manufacture a new and fast LBL deposition machine (2) Realize exponential growth of LBL ... |
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| National Aeronautics Research, Development, Test and Evaluation (RDT&E) Infrastructure Plan |
Jan 2011 |
49 pages |
| Authors:
NATIONAL SCIENCE AND TECHNOLOGY COUNCIL WASHINGTON DC COMMITTEE ON TECHNOLOGY
|
| The 2010 National Aeronautics Research and Development Plan (R&D Plan) represented the Federal consensus regarding national aeronautics R&D challenges, goals, and supporting objectives. Key to the success of the R&D Plan is a need for improved interagency collaboration to best manage and use the Nation's aeronautics research, development, test, and evaluation (RDT&E) infrastructure. Recognizing this, the National Aeronautics Research and Development Policy that guides Federal aeronautics research and development (R&D) ... |
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| Space & Cyberspace: The Overlap and Intersection of Two Frontiers |
Jan 2011 |
|
| Authors:
Jac W Shipp; ARMY SPACE AND MISSILE DEFENSE COMMAND/ARMY FORCES STRATEGIC COMMAND PETERSON AFB CO
|
| The pace of change and level of effort has increased dramatically with respect to operations in Space and Cyberspace, with both of these domains increasingly being influenced by multiple actors with access to the information environment. What is needed in supporting this trend is up-to-date thinking and dialogue about how the Space and Cyberspace domains and their operations overlap and intersect, and the synergies and opportunities created by each. Our ... |
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| The Army's Space Provider |
Jan 2011 |
6 pages |
| Authors:
Richard P Formica; ARMY SPACE AND MISSILE DEFENSE COMMAND/ARMY FORCES STRATEGIC COMMAND PETERSON AFB CO
|
| In this issue of the Army Space Journal, I will share a slightly edited version of my recent testimony to the Senate Armed Services Subcommittee on Strategic Forces in May. My purpose was to inform the Senate about the Army as a user of space capabilities; to summarize the Army s space strategy and policy; and to discuss the space capabilities provided by the Army. I think it s important ... |
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| Toward a Theory of Spacepower. Selected Essays |
2011 |
595 pages |
| Authors:
Charles D. Lutes; Peter L. Hayes; Vincent A. Manzo; Lisa M. Yambrick; M. E. Bunnn; NATIONAL DEFENSE UNIV WASHINGTON DC INST FOR NATIONAL STRATEGIC STUDIES
|
| Over a century ago, the rapid expansion of global overseas trade brought about by the advent of improved steam propulsion and advances in ship design and construction posed new national policy and security questions for the United States. First, to what degree did American economic prosperity depend upon being a major active participant in maritime commerce? Second, what were the naval implications of such action with respect to the extension ... |
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| MISSE-6 Post-Flight Examination, Disassembly and Analysis Results |
21 Dec 2010 |
67 pages |
| Authors:
Harold G Pippin; Jerry L Wert; Andrew Robb; BOEING CO SEATTLE WA
|
| The Materials International Space Station Experiment (MISSE-6A and -6B) flight packages were flown on the International Space Station between March, 2008 and August 2009. This report describes the results of work performed during the disassembly and analysis of the MISSE-6 flight package. MISSE-6A and -6B contianed a significant number of active experiments. Power was supplied from the ISS and data was collected on-orbit, stored in 50 miniture data loggers, and ... |
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| A Space Acquisition Leading Indicator Based on System Interoperation Maturity |
Dec 2010 |
125 pages |
| Authors:
Jason T Shibata; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| The Department of Defense's space acquisition enterprise has experienced numerous challenges since the advent of space power. Space borne capabilities are needed more than ever, but space acquisition frequently fails to meet its goals. The decades of space acquisition experience form a rich history that can be used to build a leading indicator of success to enable effective program execution. First, the space acquisition areas of greatest concern were determined ... |
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| Naval Postgraduate School Solar Cell Array Tester |
Dec 2010 |
121 pages |
| Authors:
Kevin J Smith; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Educating space professionals is an expensive endeavor. The use of technologies such as CubeSats can cut the cost giving space professionals real world experience in satellite design, testing, integration and operations. The Naval Postgraduate School-Solar Cell Array Tester (NPS-SCAT) will be the first of what may be many CubeSats developed by the Space Systems Academic Group, Small Satellite Laboratory. This thesis analyzes the NPS-SCAT program from the program manager's point ... |
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| Dynamic Testing of Electromechanical Actuators Using Time-History Data |
Nov 2010 |
11 pages |
| Authors:
Nicholas Rolinski; Quinn Leland; Earl Gregory; Brett Jordan; David Woodburn; Thomas Wu; DAYTON UNIV RESEARCH INST (URDI) OH
|
| A commercial electromechanical actuator (EMA) is to be dynamically tested with predetermined stroke and load profiles for transient thermal and electric power behavior to validate a numerical model used for aerospace applications. The EMA will follow the stroke profile representative of a real aircraft mission duty cycle. A hydraulic press will exert a corresponding load profile onto the EMA. Specialized hydraulic load control methods must be employed to meet the ... |
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| SPACE ACQUISITIONS: Challenges in Commercializing Technologies Developed under the Small Business Innovation Research Program |
Nov 2010 |
42 pages |
| Authors:
GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
|
| To be competitive in the global economy, the United States relies heavily on innovation through research and development (R&D). The Small Business Innovation Development Act of 1982 established the Small Business Innovation Research (SBIR) Program to stimulate technological innovation among small businesses. SBIR offers one avenue for introducing technological innovation in the Department of Defense (DOD) space sector. GAO was asked to assess (1) the extent to which DOD is ... |
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| Space Domain Awareness for Manned GEO Servicing |
17 Sep 2010 |
18 pages |
| Authors:
Travis Blake; DEFENSE ADVANCED RESEARCH PROJECTS AGENCY ARLINGTON VA TACTICAL TECHNOLOGY OFFICE
|
| Reach, regain and retain the tactical advantage of distance through awareness, access, adaptability and affect. Transforming the future of warfighting by pursuing high-risk, high-payoff tactical technology and development of rapid, mobile and responsive combat capability for advanced weapons, platforms and space systems. Advanced Weapon Systems * Advanced Platforms * Advanced Space Systems. |
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| Optimizing Orbital Debris Monitoring with Optical Telescopes |
Sep 2010 |
18 pages |
| Authors:
James R Shell; AIR FORCE SPACE INNOVATION AND DEVELOPMENT CENTER SCHRIEVER AFB CO
|
| Continued growth in the orbital debris population has renewed concerns over the long-term use of space. Debris poses an increasing risk to manned space missions and operational satellites; however, the majority of debris large enough to cause catastrophic damage is not being tracked and maintained in a catalog. Passive optical systems hold great promise to provide a cost-effective means to monitor orbital debris. Recent advances in optical system design, detectors ... |
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| Small Space Launch: Origins and Challenges |
Sep 2010 |
4 pages |
| Authors:
Thomas H Freeman; Jose Delarosa; SPACE AND MISSILE SYSTEMS CENTER KIRTLAND AFB NM
|
| The United States Space Situational Awareness capability continues to be a key element in obtaining and maintaining the high ground in space. Space Situational Awareness satellites are critical enablers for integrated air, ground and sea operations, and play an essential role in fighting and winning conflicts. The United States leads the world space community in spacecraft payload systems from the component level into spacecraft, and in the development of constellations ... |
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| Dynamic Tasking of Networked Sensors Using Covariance Information |
Sep 2010 |
11 pages |
| Authors:
Keric Hill; Paul Sydney; Randy Cortez; Kris Hamada; Daron Nishimoto; Kim Luu; Schumacher; Paul W Jr; PACIFIC DEFENSE SOLUTIONS LLC KIHEI HI
|
| A comprehensive high-fidelity simulation environment of networked optical space surveillance sensors has been created under an effort called TASMAN (Tasking Autonomous Sensors in a Multiple Application Network). One of the first studies utilizing this environment was focused on a novel resource management approach, namely covariance-based tasking. Under this scheme the state error covariance of resident space objects (RSO), sensor characteristics, and sensor-target geometry were used to determine the effectiveness of ... |
|
| Photon Sieve Space Telescope |
Sep 2010 |
8 pages |
| Authors:
Geoff Andersen; Mike Dearborn; Geoff McHarg; AIR FORCE ACADEMY COLORADO SPRINGS CO
|
| One approach for constructing ultra-large (20m) next-generation, space-based telescopes is to use membrane primaries. Conventional refractive (lens) or reflective (mirror) elements require perfect three-dimensional surfaces that are impossible to create in zero-g. An alternative is to use a flat diffractive element, which removes the need for out of plane deformation. In this case, the primary is a photon sieve, a diffractive element consisting of millions of holes arranged in circular ... |
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| Large-Scale Simulation of a Process for Cataloging Small Orbital Debris |
Sep 2010 |
11 pages |
| Authors:
Don Phillion; Alex Pertica; Ben Fasenfest; Matt De Horsley; Wim Vries; H K Springer; David Jefferson; Scot Olivier; Keric Hill; Chris Sahol; LAWRENCE LIVERMORE NATIONAL LAB CA
|
| We demonstrate a methodology for establishing orbits for the abundant, un-catalogued, yet dangerous, small orbital debris that will become observable with planned improvements to the Space Fence. Although roughly 15,000 orbital objects are present in the SSN catalog, it is believed that at least 200,000 objects that are massive enough to cause significant damage are in Earth orbit. With improvements to the Space Fence, LEO debris down to 5 cm ... |
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| Status and Progress in the Space Surveillance and Tracking Segment of ESA's Space Situational Awareness Programme |
Sep 2010 |
10 pages |
| Authors:
Emmet J Fletcher; EUROPEAN SPACE AGENCY MADRID (SPAIN)
|
| In November 2008, the European Space Agency (ESA) Council at Ministerial level approved the start of ESA's Space Situational Awareness programme. Between 2009 and 2012 a preparatory phase will run that will develop the architectural design of the system, the governance and data policy and the provision of precursor services in the areas of: Space Surveillance and Tracking, Space Weather and Near Earth Objects. This paper will concentrate on the ... |
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| Robotic Follow-up for Human Exploration |
Sep 2010 |
25 pages |
| Authors:
Terrence Fong; Maria Bualat; Matthew C Deans; Byron Adams; Mark Allan; Martha Altobelli; Xavier Bouyssounouse; Tamar Cohen; Lorenzo Flueckiger; Joshua Garber; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCH CENTER
|
| We are studying how robotic follow-up can improve future planetary exploration. Robotic follow-up, which we define as augmenting human field work with subsequent robot activity, is a field exploration technique designed to increase human productivity and science return. To better understand the benefits, requirements, limitations and risks associated with this technique, we are conducting analog field tests with human and robot teams at the Haughton Crater impact structure on Devon ... |
|
| Importance of Surface Conditions for Spacecraft Charging |
Aug 2010 |
6 pages |
| Authors:
Shu T Lai; AIR FORCE RESEARCH LAB HANSCOM AFB MA SPACE VEHICLES DIRECTORATE
|
| This paper studies the importance of secondary and backscattered electrons in spacecraft charging. The secondary and backscattered electron yields from surface materials are affected not only by the energies of the incoming electrons but also by the surface condition. Some typical parameters characterizing the surface condition are the surface smoothness, thickness, surface composition, and surface contamination. By using the published formulae of secondary and backscattered electron yields, the critical temperature ... |
|
| Exploring the Effects of International Traffic in Arms Regulations Restrictions on Innovation in the U.S. Space Industrial Base |
AUG 2010 |
98 pages |
| Authors:
Kalliroi L. Landry; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH DEPT OF SYSTEMS AND ENGINEERING MANAGEMENT
|
| The International Traffic in Arms Regulations (ITAR) are used to protect United States (U.S.) military technologies. However, changes to ITAR export controls regarding space technologies have had a major impact to the U.S. space industry. The literature mentions a concern for the health of lower-tier firms because they are a major source of innovation, but there is no additional information considering the effects of ITAR on space innovation at those ... |
|
| Analysis of a Hypergolic Propellant Explosion During Processing of a Launch Vehicles in the VAB |
Jul 2010 |
28 pages |
| Authors:
Jon D Chrostowski; Wenshui Gan; Michael D Campbell; ACTA INC TORRANCE CA
|
| NASA is developing launch vehicles to support missions to Low Earth Orbit (LEO), the moon and deep space. Whether manned or unmanned, the vehicle components will likely be integrated in the Vehicle Assembly Building (VAB) at Kennedy Space Center (KSC) and typically include a fueled spacecraft (SC) that sits on top of one or more stages. The processing of a fueled SC involves hazardous operations when it is brought into ... |
|
| National Space Policy of the United States of America |
28 Jun 2010 |
19 pages |
| Authors:
EXECUTIVE OFFICE OF THE PRESIDENT WASHINGTON DC
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| The space age began as a race for security and prestige between two superpowers. The opportunities were boundless, and the decades that followed have seen a radical transformation in the way we live our daily lives, in large part due to our use of space. Space systems have taken us to other celestial bodies and extended humankind's horizons back in time to the very first moments of the universe and ... |
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Astronautics
