Scientific and Technical Aerospace Reports Volume 38 October 6 ...

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20000094382 Rensselaer Polytechnic Inst., Dept. of Mechanical Engineering Aeronautical Engineering and Mechanics, Troy, NY USA Infrastructure to Support Massively Computing With Adaptive Unstructured Grids Final Report, 1 Apr. 1997-31 Mar. 1998 Jansen, Kenneth E.; Shephard, Mark S.; Flaherty, Joseph E.; Mar. 31, 1998; 5p; In English Contract(s)/Grant(s): F49620-97-1-0250 Report No.(s): AD-A380066; AFRL-SR-BL-TR-00-0336; No Copyright; Avail: CASI; A01, Hardcopy; A01, Microfiche This contract provided $143,500 from the AFOSR combined with $61,500 of cost sharing directly from Rensselaer Polytechnic Institute for the procurement of computer hardware to facilitate AFOSR sponsored research under the following research: (1) Large Eddy Simulation (LES) of turbulent flow over an airfoil using unstructured grids (Grant # F49620-97-1-0043) and (2) Crystal growth simulations and (3) parallel adaptive computations. to further leverage these fund they were combined with an additional $208,000 from a National Science Foundation research infrastructure grant (plus an additional $40,000 in Rensselaer matching for that grant) and an additional $138,000 from Silicon Graphics Inc. to purchase the following very substantial computational facility from Silicon Graphics Inc.: 1. 8 R10000 processors, 2. 3.5 Gigabytes shared memory (addressable by all processors), 3. 18 Gigabytes fast access hard disk, 4. Onyx2 InfiniteReality graphics engine, 5. 24 inch super-wide monitor, 6. Fakespace virtual reality stereoscopic visualization system (6’ by 8’ table with a 6’ by 4.5’ visualization surface that can be tilted to any angle), 7. Indigo2 workstation with 1 R10000 processor, 8. 320 Megabytes memory, 9. 9 Gigabytes hard disk, 10. Solid impact Graphics engine, 11. 20 inch Multi-Scan monitor. DTIC Turbulent Flow; Virtual Reality; Unstructured Grids (Mathematics); Large Eddy Simulation 156 35 INSTRUMENTATION AND PHOTOGRAPHY �� 20000086212 International Atomic Energy Agency, Vienna Austria Optimization of the gamma spectrometry system at SAL with the use of large NaI(Tl) annulus in the anticoincidence mode for compton scattered radiation suppression Kierzek, J.; Parus, J.; Sep. 30, 1997; 48p; In English Report No.(s): DE98-609792; IAEA/AL-110; No Copyright; Avail: Department of Energy Information Bridge, Microfiche A gamma-ray spectrometer designed for the simultaneous acquisition of normal, coincidence and anticoincidence spectra was extensively tested. The spectrometer consists of 3 detectors: a HPGe coaxial of 42% efficiency, NaI(Tl) annulus 254 mm length and 254 mm height with a 90 mm diameter hole and a NaI(Tl) plug of 76.4 x 76.4 mm. Extensive measurements were carried out with a (sup 137)Cs point source to characterize the spectrometer performance. A Compton suppression factor (SF), a Compton reduction factor (RF), and a peak-to-Compton ratio were calculated as the performance parameters. The Compton suppression factors obtained are comparable with those of similar spectrometers described in the literature. NTIS Optimization; Gamma Ray Spectrometers 20000086216 Computer Sciences Corp., Lanham, MD USA Comparison of On-Orbit Performance of Rate Sensing Gyroscopes Sedlak, Joseph, Computer Sciences Corp., USA; Hashmall, Joseph, Computer Sciences Corp., USA; Airapetian, Vladimir, Computer Sciences Corp., USA; [2000]; 10p; In English; International Symposium on Space Flight Dynamics, Jun. 2000, Biarritz, France Contract(s)/Grant(s): GS-35F-4381G; NASA Order S-32415-G; No Copyright; Avail: CASI; A02, Hardcopy; A01, Microfiche This work presents results from the study of a large volume of spacecraft flight data pertaining to gyroscope performance. We have examined long and short term trends of gyroscope biase of first, an exact solution for the time-dependence of the attitude part of the state error covariance, averaged over the three spacecraft axes, is given. This solution is more complete than the usual cubic polynomial for the variance in that it includes coupling among the three gyroscope axes and includes an important term arising from the initial correlations. Second, several continuous 24-hour spans of gyroscope data are examined to verify the shortterm statistical model. This analysis demonstrates that in-flight data can be used to determine the strength of the white noise driving
the random walk of the gyroscope bias. This may be useful for postlaunch improvement to the noise model and for diagnosing the health of the gyroscope. Third, the long-term trends in gyroscope biases show a nearly linear systematic variation over time scales of years. This has been found on three different missions. While the random walk model is adequate as a basis for onboard Kalman filters or for state estimation using relatively short time spans, these trends indicate that some applications could benefit by accounting for the secular changes in the biases. One example is a new gyroscope calibration method that is under development that allows for multi-epoch bias solutions. Author Gyroscopes; Aerospace Vehicles; Mathematical Models; Rates (Per Time); Onboard Equipment; Performance Tests; Spacecraft Orbits 20000086613 Computer Sciences Corp., Lanham, MD USA On-Orbit Calibration of Satellite Gyroscopes Hashmall, Joseph A., Computer Sciences Corp., USA; Radomski, Mark, Computer Sciences Corp., USA; Sedlak, Joseph, Computer Sciences Corp., USA; [2000]; 11p; In English; Aerodynamics Specialist, August 2000, Denver, CO, USA; Sponsored by American Inst. of Aeronautics and Astronautics, USA Contract(s)/Grant(s): GS-35F-4381G; NASA Order S-32415-G Report No.(s): AIAA Paper 2000-4244; Copyright Waived; Avail: CASI; A03, Hardcopy; A01, Microfiche In order to maneuver satellites accurately from one attitude to another, onboard rate sensing gyroscopes usually must be calibrated after launch. Several algorithms have been used to determine gyro biases, misalignments, and scale factors. This paper describes algorithms that have been used in the past, discusses their advantages and limitations, and describes a new algorithm and the gyro calibration results obtained using this new algorithm. The new algorithm has significant operational advantages in addition to being at least as accurate as other algorithms. Author Algorithms; Attitude (Inclination); Calibrating; Gyroscopes; Inertial Reference Systems 20000088573 California Univ., San Diego, Dept. of Electrical and Computer Engineering, La Jolla, CA USA Multiple Perspective Interactive Video Surveillance and Monitoring System Final Report, Jan. 1997 - Aug. 1999 Jain, Ramesh; Jun. 2000; 27p; In English Contract(s)/Grant(s): F30602-97-1-0077; AF Proj. E651 Report No.(s): AD-A379758; AFRL-IF-RS-TR-2000-88; No Copyright; Avail: CASI; A03, Hardcopy; A01, Microfiche This report describes a technique for gathering information from a multitude of sensors in a given environment, and integrating it into a coherent and comprehensive Environment Model (EM). The focus of this effort is on the use of Multiple Perspective Interactive Video technology for intelligent video monitoring of environments. The technology developed was applied to two scenarios: the surveillance of a room used as a library and the surveillance of a parking lot. An overall architecture was developed, one for each scenario. For the first scenario (library), four cameras were used to monitor the activity in the room. The system worked on two PCs and monitored activity like ”stealing an object,” ”loitering near a bookshelf,” and ”jumping on a table.” The second scenario (parking lot), included three cameras. The system monitored activity like pedestrians going near several cars, cars entering the parking lot at excessive speed,, and cars remaining in the same spot for more than a specified amount of time. DTIC Surveillance; Video Signals; Computer Vision; Cameras 20000088575 Army Aeromedical Research Lab., Fort Rucker, AL USA Feasibility of Using the AN/PVS-14 Monocular Night Vision Device for Pilotage Final Report McLean, William e.; Estrada, Arthur; Jun. 2000; 49p; In English Report No.(s): AD-A379764; USAARL-2000-18; No Copyright; Avail: CASI; A03, Hardcopy; A01, Microfiche The AN/PVS-14 Monocular Night Vision Device (MNVD) high performance image intensification system was designed for ground use. During a USAARL optical and visual evaluation of the MNVD, the authors noted that the user could fuse the intensified image with the unaided or nondisplay viewing eye. The fused images from the right and left eyes provided some color and depth perception under certain night lighting conditions and allowed the unaided eye to remain dark adapted. This assessment explored the potential use of the MNVD for pilotage using two experienced night vision goggle (NVG) UH-60 pilots and two experienced AH-64 pilots, who also used the helmet display unit (HDU) with symbology and thermal imagery. DTIC Goggles; Image Intensifiers; Night Vision; Feasibility; Aircraft Pilots; Monocular Vision 157
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Scientific and Technical Aerospace
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Introduction Scientific and Technic
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Table of Contents Subject Divisions
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08 Aircraft Stability and Control 2
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25 Inorganic, Organic, and Physical
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Subject Categories of the Division
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61 Computer Programming and Softwar
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82 Documentation and Information Sc
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Document Availability Information T
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Avail: NASA Public Document Rooms.
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Hardcopy & Microfiche Prices Code N
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ALABAMA AUBURN UNIV. AT MONTGOMERY
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��
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20000091005 NASA Langley Research C
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ing actuator loading, control surfa
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20000088689 Mitre Corp., McLean, VA
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20000092117 Defence Science and Tec
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Authority (MWAA), which operates Re
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20000092083 NASA Goddard Space Flig
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inspections and modifications neces
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This report documents the Moving Ma
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ment concept by demonstrating the e
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tionality to accomplish this task.
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The following research results are
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the minimum number of actuators req
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of the wing span away from the form
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at Mississippi State University, pr
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The weather data (including images
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20000094311 NASA Johnson Space Cent
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human travel into space and the pla
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Contract(s)/Grant(s): NAS9-17900; R
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different design alternatives to th
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This viewgraph presentation reviews
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20000091015 NASA Marshall Space Fli
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Rocket engine propellent injector d
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The particle simulations in a Varia
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20000093952 Sverdrup Technology, In
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and nonrecurring cost benefits. Ben
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20000092491 Texas A&M Univ., Dept.
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A method has been developed for the
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uses the mechanical properties of c
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20000092050 MRJ, Inc., USA Transpor
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20000093330 Tennessee Univ., Dept.
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duced plasma analysis system is dev
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20000089851 Pennsylvania State Univ
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In this study, the authors examine
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modynamic properties are reported f
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cate that sensitized stainless stee
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20000088588 Army Research Lab., Wea
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Alloys is presented, along with det
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tion on Shape memory and Superelast
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transport in low water content S-SE
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difference in the pressure dependen
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are bonded together by a matrix res
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y others) Stress was incorporated i
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growth surface reactions directly.
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gies and decomposes at similar temp
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20000088395 Naval Air Warfare Cente
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Meeting; October 1999; Volume 1, pp
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20000088407 Georgia Inst. of Tech.,
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A double reaction mechanism is used
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Contract(s)/Grant(s): N00014-95-1-1
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20000088422 Illinois Univ. at Urban
Page 129 and 130: 20000088427 Illinois Univ. at Urban
Page 131 and 132: The objective of this work was to c
Page 133 and 134: 20000089790 Army Research Lab., Abe
Page 135 and 136: 20000089796 Army Research Lab., Wea
Page 137 and 138: equation (SE)-based model with a li
Page 139 and 140: 20000089806 Pennsylvania State Univ
Page 141 and 142: kcal/mole. The analysis of the test
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Page 149 and 150: 20000094281 BAE Systems, Rome, NY U
Page 151 and 152: The Department of Defense (DoD) is
Page 153 and 154: are conducted on the SQALE test dat
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Page 157 and 158: 20000091443 Karlsruhe Univ., Intera
Page 159 and 160: environment for airborne L-band VV-
Page 161 and 162: ing with analysis and numerical com
Page 163 and 164: 20000088533 Princeton Univ., Dept.
Page 165 and 166: pumps, blowers or fans require only
Page 167 and 168: 20000091678 Aerojet-General Corp.,
Page 169 and 170: above 300Torr, several local discha
Page 171 and 172: asymmetric current-voltage characte
Page 173 and 174: For long-duration space missions, t
Page 175 and 176: 20000088675 Texas Univ., Austin, TX
Page 177 and 178: is necessary to fully account for t
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Page 183 and 184: show an example to introduce magnet
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Page 189 and 190: For excitation of Raman scattering
Page 191 and 192: 20000094276 Aerosoft, Inc., Blacksb
Page 193 and 194: mized, and dependent upon the desig
Page 195 and 196: from the analytical model. The resu
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Page 199 and 200: The problem of sensor runout in mag
Page 201 and 202: 20000089743 Kyushu Inst. of Tech.,
Page 203 and 204: 39 STRUCTURAL MECHANICS ��
Page 205 and 206: (b) massive shear band formation at
Page 207 and 208: The present method is based on the
Page 209 and 210: power law dependence of the embedde
Page 211 and 212: 20000088634 Geological Survey, Wate
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Page 215 and 216: associated creep rates. Three glaci
Page 217 and 218: Geochemical studies are fundamental
Page 219 and 220: implementation and basis for this c
Page 221 and 222: Report No.(s): Rept-5098-04; No Cop
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Page 225 and 226: atio of NO and on the discharge cur
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Page 229 and 230: matrix has a nonporous texture simi
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Magnetic measurements taken by the
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Continent and eastward progression
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Models 20000088625 NASA Goddard Spa
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Center, USA; Jedlovec, G. J., NASA
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of recurring (at least four occurre
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conditions during Spacelab, Biokosm
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all suppressed in the RWV bioreacto
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20000088577 Air Force Inst. for Env
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tion and their implications on crew
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20000089912 Krug Life Sciences, Inc
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20000094303 NASA Johnson Space Cent
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address human factor issues, and po
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in a long-duration environment, and
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functions such as life support and
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error, allows for processor mode se
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20000088570 Naval Postgraduate Scho
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problems including an overview of t
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Report No.(s): NASA/TM-2000-210361;
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e detected and removed from the bod
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As the Army enters the 2lst century
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62 COMPUTER SYSTEMS ��
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tion resources. They also are often
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tion with Centrum voor Wiskunde en
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The development of a computational
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outputs. The neural network is trai
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20000090653 Johns Hopkins Univ., De
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A study on the use of neural networ
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neous Elasticity Clements, David L.
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Technological advances have made at
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Report No.(s): PB2000-106588; No Co
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able. Since these are situations th
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A superconductive solenoid model co
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can lead to beam deflection or mode
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20000089822 Institut Franco-Alleman
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20000090581 Pennsylvania State Univ
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20000086205 Joint Inst. for Nuclear
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heavy ions and improved detection s
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During the current funding period,
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We calculated a temperature rise of
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Monte Carlo code have been made. Th
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Testing can be divided into two cat
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20000092198 Kanazawa Univ., Dept. o
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camera and computer processor. Seve
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The objectives of this program incl
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ses. Dry substrate etch with a Si/S
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density dn(sub e)-bar/dt was as hig
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this second model leads to the prop
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adjacent to the substrate can be so
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is one of the unique points of GTCS
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This was the reports of Yayoi Study
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20000092169 Kyushu Univ., Dept. of
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20000092193 Nagaoka Univ. of Techno
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20000094029 National Inst. for Fusi
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A cooperative project aiming at sup
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20000089859 North Carolina State Un
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20000092173 Yamanashi Univ., Facult
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20000094275 South Dakota School of
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allow small SUSY corrections to the
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p(sub T), and the J/psi decay angul
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20000091584 Caelum Research Corp.,
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The goal of this thesis is to analy
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only if it is known with certainty
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from the NIST database system, whic
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20000088604 Vanguard Research, Inc.
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X-ray telescopes. These telescopes
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Supernovae play a key role in the d
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20000092510 Smithsonian Astrophysic
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This talk will discuss the present
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We have detected four far-infrared
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the physical origin of the phenomen
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several 10 (exp 6) K, with a spatia
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much impact on density enhancement,
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In this work, we investigate the ef
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We review the sources of uncertaint
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In a previous paper we have discuss
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20000090641 Observatoire de Paris-M
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20000090650 California Univ., Berke
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(sub 0) = 50 kilometers per second
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20000090670 Turin Univ., Ist. di Fi
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Using the Long Wavelength Spectrome
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ing these results with the noise le
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lom, Larry, Geological Survey, USA;
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20000094220 California Inst. of Tec
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technologies were identified becaus
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With the launch of the Chandra X-ra
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93 SPACE RADIATION ��
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from ground-based observatories lie
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is partly due to simple differences
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20000092518 Smithsonian Astrophysic
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A ABILITIES, 128 ABLATION, 113 ABNO
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BODY SWAY TEST, 222 BODY TEMPERATUR
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CRAB NEBULA, 387 CRACK PROPAGATION,
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EULER EQUATIONS OF MOTION, 267 EURO
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HEATING EQUIPMENT, 293 HEAVY IONS,
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LASER WELDING, 166 LASERS, 168 LATE
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MULTIGRID METHODS, 267, 268 MULTILA
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PLASTIC PROPERTIES, 181 PLATES (STR
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SAMPLING, 336 SANDS, 206 SANDWICH S
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SUPERNOVA REMNANTS, 365, 366, 367,
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WIND VELOCITY MEASUREMENT, 27, 214
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Balakrishnan, R., 318 Balda, Juan C
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Chung, T. J., 155 Chyuan, Shing-Woe
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Freitas, Marcilio S. R., 244 Fremer
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Hurley, K., 372 Hurley, Kevin, 391
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Laille, A., 303 Lait, L. R., 199 La
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Mora, K. L., 186 Morales, R., 369 M
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Reda, Daniel C., 84 Reddy, J. N., 5
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Sture, Stein, 206 Sturm, James C.,
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Wu, Z. Y., 170 PA-18 X Xia, W., 99
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