Scientific and Technical Aerospace Reports Volume 38 July 28, 2000

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Many aspects of chip scale package (CSP) technology, with focus on assembly reliability characteristics, are being investigated by the JPL-led consortia. Three types of test vehicles were considered for evaluation and currently two configurations have been built to optimize attachment processes. These test vehicles use numerous package types. to understand potential failure mechanisms of the packages, particularly solder ball attachment, the grid CSPs were subjected to environmental exposure. Package I/Os ranged from 40 to nearly 300. This paper presents both as assembled, up to 1, 000 hours of isothermal aging shear test results and photo micrographs, and tensile test results before and after 1,500 cycles in the range of -30/100 C for CSPs. Results will be compared to BGAs with the same the same isothermal aging environmental exposures. Author Packages; Reliability; Isothermal Processes; Aging (Materials) 62 32 COMMUNICATIONS AND RADAR �� 20000061969 DYNACS Engineering Co., Inc., Brook Park, OH USA Suspended Rectangular/Circular Patch Antennas with Electromagnetically Coupled Inverted Microstrip Feed for Dual Polarization/Frequency Simons, Rainee N., DYNACS Engineering Co., Inc., USA; [2000]; 4p; In English; Antennas and Propagation, 16-21 Jul. 2000, Salt Lake City, UT, USA; Sponsored by Institute of Electrical and Electronics Engineers, USA Contract(s)/Grant(s): NAS3-98008; No Copyright; Avail: CASI; A01, Hardcopy; A01, Microfiche The paper demonstrates suspended rectangular and circular patch antennas with electromagnetically coupled inverted microstrip feed for linear as well as dual linear polarization/frequency applications. The measured results include the return loss and the impedance bandwidth of the antennas. Author Performance Tests; Dipole Antennas; Linear Polarization; Frequencies; Electromagnetic Coupling 20000062467 NASA Glenn Research Center, Cleveland, OH USA Internet Technologies for Space-Based Communications: State of the Art and Challenges Bhasin, K., NASA Glenn Research Center, USA; DePaula, R., NASA, USA; Edwards, C., Jet Propulsion Lab., California Inst. of Tech., USA; [2000]; 12p; In English; 18th; Communication Satellite Systems, 10-14 Apr. 2000, Oakland, CA, USA; Sponsored by American Inst. of Aeronautics and Astronautics, USA Contract(s)/Grant(s): RTOP 632-6F-0C Report No.(s): AIAA Paper 2000-1170; Copyright Waived; Avail: CASI; A03, Hardcopy; A01, Microfiche The Internet is rapidly changing the ways we communicate information around the globe today. The desire to provide Internet-based services to anyone, anywhere, anytime has brought satellite communications to the forefront to become an integral part of the Internet. In spite of the distances involved, satellite links are proving to be capable of providing Internet services based on Internet protocol (TCP/IP) stack. This development has led to the question particularly at NASA; can satellites and other space platforms become an Internet-node in space? This will allow the direct transfer of information directly from space to the users on Earth and even be able to control the spacecraft and its instruments. NASA even wants to extend the near earth space Internet to deep space applications where scientists and the public here on Earth may view space exploration in real time via the Internet. NASA’s future solar system exploration will involve intensive in situ investigations of planets, moons, asteroids, and comets. While past missions typically involved a single fly-by or orbiting science spacecraft, future missions will begin to use fleets of small, highly intelligent robotic vehicles to carry out collaborative investigations. The resulting multi-spacecraft topologies will effectively create a wide area network spanning the solar system. However, this will require significant development in Internet technologies for space use. This paper provides the status’of the Internet for near earth applications and the potential extension of the Internet for use in deep space planetary exploration. The paper will discuss the overall challenges of implementing the space Internet and how the space Internet will integrate into the complex terrestrial systems those forms the Internet of today in a hybrid set of networks. Internet. We envision extending to the deep space environment such Internet concepts as a well-designed layered architecture. This effort will require an ability to develop and infuse new physical layer technology to increase network bandwidth at very low-bit error rates. In addition, we identify network technologies such as routers and switches needed to maintain standard application layer interfaces, while providing low-cost, efficient, modular networking solutions. We will describe the overall archi-
tectural approach to extending the concept of the Internet to space and highlight the important technological challenges and initiatives that will make it a reality. Author Internets; Bit Error Rate; Communication Satellites; Complex Systems; Protocol (Computers); Real Time Operation; Satellite Communication; Satellite Networks; Wide Area Networks 20000062895 NASA Glenn Research Center, Cleveland, OH USA Current Status of Thin Film (Ba,SR)TiO3 Tunable Microwave Components for RF Communications VanKeuls, F. W., NASA Glenn Research Center, USA; Romanofsky, R. R., NASA Glenn Research Center, USA; Mueller, C. H., NASA Glenn Research Center, USA; Warner, J. D., NASA Glenn Research Center, USA; Canedy, C. L., Maryland Univ., USA; Ramesh, R., Maryland Univ., USA; Miranda, F. A., NASA Glenn Research Center, USA; [2000]; 13p; In English; 12th; Integrated Ferroelectrics, 12-15 Mar. 2000, Aachen, Germany Contract(s)/Grant(s): RTOP 632-6E-51; No Copyright; Avail: CASI; A03, Hardcopy; A01, Microfiche The performance of proof-of-concept ferroelectric microwave devices has been moving steadily closer to the level needed for satellite and other rf communications applications. This paper will review recent progress at NASA Glenn in developing thin film Ba(x)SR(1-x)TiO3 tunable micro-wave components for these applications. Phase shifters for phased array antennas, tunable filters and tunable oscillators employing microstrip and coupled microstrip configurations will be presented. Tunabilities, maximum dielectric constants, and phase shifter parameters will be discussed (e.g., coupled microstrip phase shifters with phase shift over 200 deg at 18 GHz and a figure of merit of 74.3 deg/dB). Issues of post-annealing, Mn-doping and Ba(x)SR(1-x) TiO3 growth on sapphire and alumina substrates will be covered. The challenges of incorporating these devices into larger systems, such as yield, variability in phase shift and insertion loss, and protective coatings will also be addressed. Author Annealing; Communication Equipment; Ferroelectricity; Microwave Equipment; Phase Shift Circuits; Protective Coatings; Proving; Radio Communication; Sapphire; Substrates; Thin Films 20000062932 Honeywell Technology Center, Minneapolis, MN USA Intuitive Policy Specification for Optimized Flow of Asynchronous C3I Transmission in Operations (IPSO FACTO) Final Report, Jan 1999 - May 2000 Richardson, Jim; Miller, Chris; Johnson, Chris; Shackleton, John; Funk, Harry; May 2000; 84p; In English; Prepared in collaboration with SMA Information Flow Technologies LLC., Minneapolis, MN and Aptima Inc., Woburn, MA. Contract(s)/Grant(s): DABT63-99-C-0003 Report No.(s): AD-A377351; DARPA-IDT-R00-001; No Copyright; Avail: CASI; A05, Hardcopy; A01, Microfiche We address the problem of allocating scarce communications resources in a military wide area network so that the information flows best support mission objectives. IPSO FACTO enables commanders to specify an information policy that guides automated allocation of communication resources to specific information requests. We have developed a formal mathematical model of information policy, implemented this model in software, and assessed the value of policy to resource allocation through a series of simulation experiments. We found that an explicit policy can indeed improve the total value of information conveyed in network overload conditions. However, specifying this policy is extremely time consuming. We describe a task-based, semi-automated approach to policy creation that generates policy as a side effect of mission planning. In this approach, a hierarchical mission plan is constructed from task templates; each template carries information policy elements to support the task. As the templates are arranged into a task hierarchy, the policy elements are merged to form a complete policy. DTIC Command and Control; Communication; Information Flow; Wide Area Networks; Information Transfer; Information Resources Management; Information Theory 20000063387 TRW Space and Electronics Group, Redondo Beach, CA USA A Monolithic W-Band Three-Stage LNA Using 0.1 Micron InAlAs/InGaAs/InP HEMT Technology Wang, H., TRW Space and Electronics Group, USA; Lai, R., TRW Space and Electronics Group, USA; Chen, T. H., TRW Space and Electronics Group, USA; Chow, P. D., TRW Space and Electronics Group, USA; Velebir, J., TRW Space and Electronics Group, USA; Tan, K. L., TRW Space and Electronics Group, USA; Streit, D. C., TRW Space and Electronics Group, USA; Liu, P. H., TRW Space and Electronics Group, USA; Ponchak, G., TRW Space and Electronics Group, USA; IEEE MTT-S Digest; [1993], pp. 519-522; In English Contract(s)/Grant(s): NAS3-25930; RTOP 632-6E-51; Copyright; Avail: Issuing Activity 63
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Scientific and Technical Aerospace
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Introduction Scientific and Technic
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Subject Divisions Table of Contents
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ground equipment and systems. For a
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Subject Categories of the Division
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48 Oceanography 139 Includes the ph
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72 Atomic and Molecular Physics 191
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Document Availability Information T
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Avail: NASA Public Document Rooms.
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NASA CASI Price Tables — Effectiv
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ALABAMA AUBURN UNIV. AT MONTGOMERY
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��
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20000061433 Pisa Univ., Dipartiment
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English; 34th; 34th Thermophysics C
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ciency of the generated derivative
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20000063509 NASA Glenn Research Cen
Page 33 and 34: 05 AIRCRAFT DESIGN, TESTING AND PER
Page 35 and 36: A long tradition of aerodynamic des
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Page 43 and 44: performance required for a proposed
Page 45 and 46: ment cost and create better product
Page 47 and 48: tion (NPSS), is focused on the inte
Page 49 and 50: surface measurement techniques used
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Page 55 and 56: primary issues for it’s adaptatio
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Page 61 and 62: necessary for ignition modeling, or
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Page 65 and 66: 24 COMPOSITE MATERIALS ��
Page 67 and 68: ments. For the screening of liner m
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Page 71 and 72: 20000065655 Ames Lab., IA USA Funda
Page 73 and 74: This is a second Triennial Conferen
Page 75 and 76: of completely charged PSSNa solutio
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Page 79 and 80: Spacecraft in low Earth orbit (LEO)
Page 81 and 82: Pressure gradients, i.e. pressure h
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Page 87 and 88: 20000064078 Physics and Electronics
Page 89 and 90: 20000064925 Institute for Human Fac
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Page 93 and 94: 20000062455 National Inst. of Stand
Page 95 and 96: Added Analysis (Risk Reduction); 6)
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Page 101 and 102: other, The theoretical framework go
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Page 113 and 114: 37 MECHANICAL ENGINEERING ��
Page 115 and 116: solver based on overset grid techno
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Page 119 and 120: 20000064621 Rensselaer Polytechnic
Page 121 and 122: that for a specific example of a be
Page 123 and 124: km x 1000 km). As with the nearly c
Page 125 and 126: 20000064527 Analytical Imaging and
Page 127 and 128: 20000064533 Austin State Univ., Dep
Page 129 and 130: 20000064539 California Univ., Inst.
Page 131 and 132: 20000064547 Jet Propulsion Lab., Ca
Page 133 and 134: in Yellowstone National Park. We ar
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terns of community hysteresis based
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20000064565 Jet Propulsion Lab., Ca
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tion model (DEM) fitting to the sca
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The Carolina slate belt is a 10- to
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20000063373 Los Alamos National Lab
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20000064912 New Energy and Industri
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and discusses the issues and resear
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The objective of this study was to
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distributions with engine test resu
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7.6, while the 1926 events appear t
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We investigate the compositional di
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Flight Center, USA; Moore, T. E., N
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This report presents the Applied Me
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in Goa, India, by 3 - 4 days. Wind
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51 LIFE SCIENCES (GENERAL) Includes
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20000062717 Joint Inst. for Nuclear
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20000064015 Institute for Human Fac
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during 50% (SD 4%) of the breathing
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20000064711 Massachusetts Inst. of
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The analysis of this smaller data s
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vided a functional helmet mount. Th
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61 COMPUTER PROGRAMMING AND SOFTWAR
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The goal of multi-image classificat
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20000063526 Defence Science and Tec
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85 dB amplifier design evolved by o
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20000064594 New Mexico Univ., Elect
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20000064615 NASA Ames Research Cent
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declarations with a pattern recogni
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containing point where interpolatio
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has his own responsibility, while t
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the people, documents and projects
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and experimental technology, many o
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tems. In particular this applicatio
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Over the past decade, high performa
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expensive than a single analysis. I
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20000064726 Carnegie-Mellon Univ.,
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20000064099 Teledyne Brown Engineer
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20000066597 Geophysical Observatory
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20000065633 Institute TNO of Applie
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important conclusion is that for su
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est frame of the string. The modifi
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isotopes. The method and program we
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A detailed study is undertaken, usi
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20000063497 Kaiser Electro-Optics,
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delivers 60% of the x-ray flux from
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76 SOLID-STATE PHYSICS ��
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20000064660 Abdus Salam Internation
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20000067648 NASA Marshall Space Fli
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20000064703 Institute of Atomic Ene
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The BRST approach is applied to the
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20000067671 Hampton Univ., VA USA A
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82 DOCUMENTATION AND INFORMATION SC
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ecoming almost too cumbersome to be
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physical world. These are the two p
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with WFPC2 data. Tests of HSTphot
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A brief description is given of the
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20000064070 NASA Ames Research Cent
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gas, show variations that have rema
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egy, called Power In that would all
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20000065631 NASA Kennedy Space Cent
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20000064089 Smithsonian Astrophysic
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A ABERRATION, 143, 198 ABRASION, 22
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COMPRESSIBLE FLOW, 83 COMPRESSION L
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FATIGUE (MATERIALS), 50, 93, 96 FAT
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LASING, 90 LATE STARS, 224 LATITUDE
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PATCH ANTENNAS, 74 PATHOLOGY, 98 PA
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SPACE PLATFORMS, 38 SPACE PROBES, 2
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WIND PROFILES, 137 WIND TUNNEL TEST
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Brown, Andy, 38 Brown, April S., 20
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Grosvenor, C. A., 70 Grosvenor, J.
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Lu, Gui-Ying, 50 Lugg, Desmond J.,
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Robertson, Tony, 39 Robinson, Jeffr
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Warner, J. D., 63 Warren, James, 16
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