Journal of Research of the National Bureau of Standards
Topics: Gravitational theory, oblate planet, satellite orbits, unretarded
It is important for a student of Space Science to have the opportunity to thoroughly understand the principle of an artificial satellite orbit. This thesis consists of four computer graphics programs that will enable the student to see what an orbit is and how it works. The first program demonstrates the shape of an orbit in two dimensions resulting from initial altitude, speed, and flight path angle. The second program draws an orbit in three dimensions around a sphere based on the input of...
Topics: Space systems, artificial satellite orbits, computer graphics, microcomputers
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Jun 15, 2011
06/11
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Boundy, R. A
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No Abstract Available
Topics: LIBRATION, ORBIT CALCULATION, SATELLITE ORBITS, CELESTIAL MECHANICS, POSITION (LOCATION)
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Jun 19, 2010
06/10
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NON
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Orbital parameters and methods of using orbital information bulletins
Topics: ECCENTRICITY, INCLINATION, SATELLITE ORBITS, SPACECRAFT, TRAJECTORY ANALYSIS, SATELLITE ORBIT,...
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Jun 21, 2010
06/10
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Vinogradov, A. P
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Luna-16 soil samples
Topics: FLUCTUATION THEORY, ORBITAL MECHANICS, SATELLITE ORBITS, DECELERATION, ORBIT PERTURBATION, SOLAR...
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Jun 27, 2010
06/10
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NON
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Microwave ionization for obtaining nonequilibrium plasma in MHD generators
Topics: ARTIFICIAL SATELLITES, SATELLITE ORBITS, TRAJECTORY ANALYSIS, COMPUTER PROGRAMS, NUMERICAL...
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Jul 11, 2010
07/10
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Allen, R. A.; Rose, P. H
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No Abstract Available
Topics: RADIO COMMUNICATION, SPACECRAFT COMMUNICATION, SYSTEMS ENGINEERING, DATA LINKS, FREQUENCY RANGES,...
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527
Jun 21, 2010
06/10
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Pervyshin, N. V., et al
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Indirect method of determining air flow through inside channel and gas temperature in front of double flow turbine
Topics: CELESTIAL MECHANICS, RELATIVISTIC EFFECTS, SATELLITE ORBITS, ARTIFICIAL SATELLITES, EQUATIONS OF...
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Jul 26, 2010
07/10
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NON
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This bibliography lists 745 reports, articles, and other documents introduced into the NASA scientific and technical information system between January 1, 1989 and June 30, 1989. Its purpose is to provide helpful information to the researcher, manager, and designer in technology development and mission design according to system, interactive analysis and design, structural and thermal analysis and design, structural concepts and control systems, electronics, advanced materials, assembly...
Topics: ORBITAL MECHANICS, SATELLITE ORBITS, SATELLITE ORIENTATION, TDR SATELLITES, DATA ACQUISITION,...
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Jun 18, 2010
06/10
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Batrakov, Yu. V.; Proskurin, V. F
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Perturbations in artificial satellite motion due to ellipticity of earth
Topics: ARTIFICIAL SATELLITES, ELLIPTICITY, GEODESY, PERTURBATION, SATELLITE ORBITS, TRIGONOMETRY, EARTH...
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Jun 11, 2011
06/11
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LaBel, Kenneth A
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Contents include the following: NASA Missions - implications to reliability and radiation constraints. Approach to Insertion of New Technologies Technology Knowledge-base development. Technology model/tool development and validation. Summary comments.
Topics: MICROSATELLITES, SPACECRAFT LAUNCHING, COMMERCIAL SPACECRAFT, COST ANALYSIS, SATELLITE ORBITS,...
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Jul 23, 2010
07/10
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Kalashnikov, Ia. A.; Vereshchagin, L. F
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No Abstract Available
Topics: GROUND STATIONS, NIMBUS 1 SATELLITE, SATELLITE-BORNE PHOTOGRAPHY, COMPARISON, SATELLITE ORBITS,...
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Jun 21, 2010
06/10
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PETERS, O
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OPERATIONAL RELIABILITY OF FLIGHT CONTROL SYSTEMS AND AUTOMATIC PILOTING OF AIRCRAFT
Topics: GEOPOTENTIAL, MATHEMATICAL MODELS, POSITION (LOCATION), SATELLITE ORBITS, COMPUTER PROGRAMS,...
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221
Jul 23, 2010
07/10
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Stanyukovich, K. P
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eye 221
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No Abstract Available
Topics: ARTIFICIAL SATELLITES, U.S.S.R., GRAVITATION, PROVING, RELATIVITY, ROTATION, SATELLITE ORBITS,...
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234
Jul 11, 2010
07/10
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KIRPICHNIKOV, S. N
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THE OPTIMIZATION OF DESCENT MANEUVERS IS CALCULATED TO EXPAND THE MINIMUM AMOUNT OF FUEL. CERTAIN LIMITATIONS ARE TAKEN INTO ACCOUNT--ANGLE OF RE-ENTRY, DISTANCE BETWEEN THE MODULES AT THE FINISH TIME, AND DIRECT VISIBILITY BETWEEN THE MODULES. IT IS EASY TO PROVE THAT THE OPTIMAL DESCENT ORBITS LIE IN THE PLANE OF THE INITIAL ORBIT.
Topics: ANGULAR VELOCITY, ORBITAL MECHANICS, SATELLITE ORBITS, DIFFERENTIAL EQUATIONS, EULER EQUATIONS OF...
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175
Jul 11, 2010
07/10
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Whitbeck, R. F
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A procedure is presented which provides an algorithm for the special case where the unknown system has n inputs, and n finite length realizations for each of the n input signals are available. Given an n input system and n experimental records for each input, it is shown that the optimum Wiener filter is easily computed using only the experimental data. No assumptions concerning the analytical structure of the spectral matrix are necessary.
Topics: LANDSAT SATELLITES, SATELLITE ORBITS, SATELLITE-BORNE PHOTOGRAPHY, COORDINATES, DATA BASES, DATA...
587
587
Jul 6, 2010
07/10
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Blaylock, R. B
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No Abstract Available
Topics: MARS LANDING, MARS PROBES, SATELLITE DESIGN, U.S.S.R. SPACE PROGRAM, REMOTE SENSORS, SATELLITE...
Mathematical and algorithmical techniques for solution of problems in satellite dynamics were developed, along with solutions to satellite orbit motion. Dynamical analysis of shuttle on-orbit operations were conducted. Computer software routines for use in shuttle mission planning were developed and analyzed, while mathematical models of atmospheric density were formulated.
Topics: NASA Technical Reports Server (NTRS), ORBIT CALCULATION, REPORTS, SATELLITE ORBITS, ALGORITHMS,...
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183
Jul 26, 2010
07/10
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Todling, Ricardo; Ghil, Michae
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eye 183
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No Abstract Available
Topics: ARTIFICIAL SATELLITES, EPHEMERIDES, POSITION (LOCATION), RADIO TRANSMISSION, SATELLITE ORBITS,...
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Jul 12, 2010
07/10
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NON
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No Abstract Available
Topics: ROCKET ENGINE CASES, SOLID ROCKET PROPELLANTS, SYNCOM SATELLITES, PROPELLANT PROPERTIES, SATELLITE...
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Jul 11, 2010
07/10
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Gazenko, O. G.; Ilin, Y. A.; Parfenov, G. P
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The main Soviet biomedical experiments conducted since the beginning of space flight are reviewed; on the basic of their results, it is concluded that prolonged manned space flight is possible, although certain apparently reversible changes in vital processes have been noted. The experiments are divided into four groups: research on mammals and turtles, on insects and amphibians, on plants, and on microorganisms and tissue cultures. In these experiments, the genetic effect of cosmic ionizing...
Topics: DESCENT TRAJECTORIES, OPTIMIZATION, ORBIT CALCULATION, SATELLITE ORBITS, ELLIPTICAL ORBITS, FUEL...
A study to identify the optimum inclination for a satellite when the satellite is inclination non-sensitive and is to be retrieved is reported. This inclination is such that it provides an opportunity for a retrieval flight at least once each day with minimal on-orbit phasing requirements and minimal ascent performance losses.
Topics: NASA Technical Reports Server (NTRS), INCLINATION, RETRIEVAL, SATELLITE ORBITS, SPACE SHUTTLES,...
The emphasis of this grant was focused on precision ephemerides for the Global Positioning System (GPS) satellites for geodynamics applications. During the period of this grant, major activities were in the areas of thermal force modeling, numerical integration accuracy improvement for eclipsing satellites, analysis of GIG '91 campaign data, and the Southwest Pacific campaign data analysis.
Topics: NASA Technical Reports Server (NTRS), EPHEMERIDES, GEODYNAMICS, GLOBAL POSITIONING SYSTEM, ORBIT...
Data acquired by Nimbus 4 satellite for the period March 1 to April 30 1971 are documented. Data are cataloged for orbits 4387 through 5205 and operational highlights of individual experiments.
Topics: NASA Technical Reports Server (NTRS), NIMBUS 4 SATELLITE, SATELLITE ORBITS, TABLES (DATA), DATA...
Predicted orbit plots are shown in three projections. The time period covered by each set of projections is 12 days 6 hours, corresponding approximately to the period of IMP-H satellite. The three coordinate systems used are the Geocentric Solar Ecliptic system (GSE), the Geocentric Solar Magnetospheric system (GSM), and the Solar Magnetic system (SM). For each of the three projections, time ticks and codes are given on the satellite trajectories. The codes are interpreted in the table at the...
Topics: NASA Technical Reports Server (NTRS), EXPLORER 47 SATELLITE, PREDICTIONS, SATELLITE ORBITS,...
All the possible circular sun-synchronous orbits for earth observatory satellites are displayed, which have orbital altitudes between 740 and 1,115 kilometers (approximately 400 to 600 nautical miles) and have either a 16, 17, or 18 day repeat cycle for the ground trace. It was found that there are 9 orbits with a 16 day repeat cycle, 17 orbits with a 17 day repeat cycle, and 7 orbits with an 18 day repeat cycle meeting the requirements. For each of these, various characteristics such as ideal...
Topics: NASA Technical Reports Server (NTRS), SATELLITE OBSERVATION, SATELLITE ORBITS, EARTH RESOURCES,...
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Jun 27, 2010
06/10
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NON
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Meteorological weather observations by planned Japanese satellite
Topics: EXPLORER 34 SATELLITE, GEOMAGNETIC TAIL, NEUTRAL PARTICLES, SHEETS, INTERPLANETARY MAGNETIC FIELDS,...
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Jul 11, 2010
07/10
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BERTIN, J
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A STUDY WAS CONDUCTED TO DETERMINE OPTIMUM AERODYNAMIC CONFIGURATIONS OF AIRCRAFT FOR HEAVY TRANSPORT OPERATIONS. THE DISADVANTAGES OF CURRENT PASSENGER AIRCRAFT FOR CARGO TRANSPORTATION ARE EXPLAINED. THE FACTORS CONSIDERED IN THE STUDY ARE: (1) THE SPEED OF THE AIRCRAFT FOR OPTIMUM PERFORMANCE, (2) THE DIMENSIONS AND UNIT TONNAGE CAPABILITY, (3) THE USE OF AIR CUSHION LANDING GEAR FOR INCREASED LOAD CAPACITY, (4) THE USE OF AIRDROP TECHNIQUES FOR INCREASING EFFICIENCY, AND (5) THE SELECTION...
Topics: ANGLES (GEOMETRY), APPROXIMATION, ARTIFICIAL SATELLITES, ORBITAL POSITION ESTIMATION, ORBIT...
The navigation and attitude reference performance of a strapdown system are investigated for applications to autonomous satellite launch and orbital operations. It is assumed that satellite payloads are integrated into existing missile systems and that the boost, orbit insertion, and in-orbit operation of the satellite are performed autonomously without relying on external support facilities. Autonomous and long term accurate navigation and attitude reference are provided by a strapdown...
Topics: NASA Technical Reports Server (NTRS), AIRBORNE/SPACEBORNE COMPUTERS, DATA PROCESSING, GUIDANCE...
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Jul 11, 2010
07/10
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Howard, F. G.; Morris, O. A
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A body of revolution, representing the equivalent area distribution of a low boom aircraft design cruising at 24,384 meters at a Mach number of 4, was tested to determine whether its theoretical sonic boom characteristics could be experimentally verified. Results indicate that the essential features of the ground signature are well predicted.
Topics: APPROXIMATION, DATA SMOOTHING, ORBITAL POSITION ESTIMATION, SATELLITE ORBITS, CIRCULAR ORBITS,...
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Jul 11, 2010
07/10
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Wilckens, V
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Several expert statements selected from literature and concerning the qualities of modern information displays lead to the definition of a number of requirements which should be covered by the displays of the future. It is shown that abstract displays principally cannot fulfill all these demands and that simply superimposing abstract symbols with the natural view of the outside world or with it's artificial equivalent will not result in an optimum solution. Some test results are shown for...
Topics: LANDSAT SATELLITES, SATELLITE ORBITS, SATELLITE-BORNE PHOTOGRAPHY, COORDINATES, DATA BASES, DATA...
Predicted orbit plots for the IMP-J satellite were given for the time period January-December 1976. These plots are shown in three projections. The time period covered by each set of projections is 12 days and 6 hours, corresponding approximately to the period of IMP-J. The three coordinate systems used are the Geocentric Solar Ecliptic system (GSE), the Geocentric Solar Magnetospheric system (GSM), and the Solar Magnetic system (SM). For each of the three projections, time ticks and codes are...
Topics: NASA Technical Reports Server (NTRS), EXPLORER 50 SATELLITE, ORBITAL POSITION ESTIMATION, PLOTS,...
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Jul 11, 2010
07/10
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Holden, F. M.; Shinners, S. M
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The results of an effort performed by Sperry Systems Management Division for AMRL in applying time series analysis as a tool for modeling the human operator are presented. This technique is utilized for determining the variation of the human transfer function under various levels of stress. The human operator's model is determined based on actual input and output data from a tracking experiment.
Topics: LANDSAT SATELLITES, SATELLITE ORBITS, SATELLITE-BORNE PHOTOGRAPHY, COORDINATES, DATA BASES, DATA...
A preliminary quantitative evaluation of a nominal AE-C trajectory (65 deg inclination, 150 km perigee, 4000 km apogee, and eccentricity 0.228) is presented in terms of perigee rotation. Plots show the effects of the rotation on the levels of average, vehicle-encountered, orbit-integrated proton and electron fluxes for the specified trajectory.
Topics: NASA Technical Reports Server (NTRS), ELECTRONS, EXPLORER SATELLITES, FLUX (RATE), PERIGEES,...
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Jul 11, 2010
07/10
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Young, L. R.; Dichgans, J. M.; Oman, C. M
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Modeling the visual and vestibular information integration process in humans was studied to determine the implications of these models with respect to requirements for flight simulation. The interaction between visual circularvection and vestibular responses is discussed.
Topics: LANDSAT SATELLITES, SATELLITE ORBITS, SATELLITE-BORNE PHOTOGRAPHY, COORDINATES, DATA BASES, DATA...
Two orbit computation methods were used: (1) numerical method- The solution to the satellite differential equations were solved in a step-by-step manner, using a mathematical algorithm taken from numerical analysis; and (2) analytical method - The solution was expressed by explicit functions of the independent variable. Analytical drag modules, tesseral terms initialization module, second order and long period terms module, and verification testing of the ASOP program were also considered.
Topics: NASA Technical Reports Server (NTRS), DRAG, ORBIT CALCULATION, SATELLITE ORBITS, ALGORITHMS,...
The mathematical formulation is presented of CNTRLF, the maneuver control program for the Applications Technology Satellite-F (ATS-F). The purpose is to specify the mathematical models that are included in the design of CNTRLF.
Topics: NASA Technical Reports Server (NTRS), ATS 6, ORBITAL MECHANICS, SATELLITE ORBITS, COMPUTER...
This study was undertaken to determine mission profile and delta velocity requirements to place a telescope at the Earth-Sun libration point L2. The program, Integrated Mission Program (IMP), was selected to be used in the investigation. A description of IMP and its capabilities may be found in the Addenda. The Addenda also contains the libration halo equations, constants and other parameters. Comments regarding the chaotic nature of numerical integration near the libration points are also...
Topics: NASA Technical Reports Server (NTRS), NUMERICAL INTEGRATION, MISSION PLANNING, SATELLITE ORBITS,...
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Jun 20, 2010
06/10
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Elyasberg, P. E
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Theory of orbital mechanics of artificial earth satellites
Topics: ARTIFICIAL SATELLITES, SATELLITE ORBIT, SPACECRAFT MOTION, ATTRACTION, ELLIPTICITY, HYPERBOLAS,...
The Non-U.S. Standard Catalog lists imagery acquired by LANDSAT 1 and LANDSAT 2 which has been processed and input to the data files during the referred month. Data, such as data acquired, cloud cover and image quality are given for each scene. The microfilm roll and frame on which the scene may be found is also given.
Topics: NASA Technical Reports Server (NTRS), LANDSAT SATELLITES, SATELLITE ORBITS, SATELLITE-BORNE...
Analyses of the on-orbit performance of forty-four unmanned NASA spacecraft are presented. Included are detailed descriptions and classifications of over 600 anomalies; each anomalous incident represents one reported deviation from expected spacecraft performance. Charts depicting satellite lifetimes and the performance of their major subsystems are included. Engineering analyses to further investigate the kinds and frequencies of various classes of anomalies have been conducted. An improved...
Topics: NASA Technical Reports Server (NTRS), ANOMALIES, SPACECRAFT PERFORMANCE, UNMANNED SPACECRAFT,...
The possibility of a collision of a Tracking and Data Relay Satellite System (TDRSS) satellite with another orbiting object is a matter of concern to NASA. One hypothesis being investigated is that by slightly altering the TDRSS satellite orbits with changes to eccentricity and argument of perigee (AOP), the number of possible conjunctions between the TDRSS fleet members and other satellites and debris ur.ould decrease. This paper presents the results of analysis completed to hypothesis.
Topics: NASA Technical Reports Server (NTRS), SATELLITE ORBITS, DATA ACQUISITION, COLLISIONS, TDR...
The non-U. S. Standard Catalog lists non-U. S. imagery acquired by LANDSAT 1 and 2 which has been processed and input to the data files during the referenced month. Data, such as date acquired, cloud cover and image quality are given for each scene. The microfilm roll and frame on which the scene may be found is also given.
Topics: NASA Technical Reports Server (NTRS), LANDSAT SATELLITES, SATELLITE ORBITS, SATELLITE-BORNE...
Special International Magnetospheric Study (IMS) Satellite Periods selected at times when two or more satellites are expected to be in interesting regions of the magnetosphere simultaneously are described. Data are presented to aid in defining a program of magnetospheric observations which emphasizes coordinated measurements of satellites, rockets, balloons, aircraft, and ground-based stations. The position is given of currently operating high altitude spacecraft in the Geocentric Solar...
Topics: NASA Technical Reports Server (NTRS), EARTH MAGNETOSPHERE, ORBITAL POSITION ESTIMATION, SATELLITE...
Services planned by the Satellite Situation Center during the International Magnetospheric Study are briefly described. User requirements are emphasized. The following data are presented: orbital parameters for ISIS 2, ESRO 4, and HEOS 2; entry exit times for highly elliptical satellites; plots for highly elliptical earth satellites; and plots and flux tube intersection for low altitude satellites.
Topics: NASA Technical Reports Server (NTRS), EARTH MAGNETOSPHERE, ORBITAL POSITION ESTIMATION, SATELLITE...
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Jul 12, 2010
07/10
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Mcgough, J. G.; Swern, F. L
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The results of fault injection experiments utilizing a gate-level emulation of the central processor unit of the Bendix BDX-930 digital computer are presented. The failure detection coverage of comparison-monitoring and a typical avionics CPU self-test program was determined. The specific tasks and experiments included: (1) inject randomly selected gate-level and pin-level faults and emulate six software programs using comparison-monitoring to detect the faults; (2) based upon the derived...
Topics: ATTITUDE CONTROL, SATELLITE-BORNE INSTRUMENTS, BIAS, MAGNETOMETERS, SPACECRAFT CONTROL, SPIN...
The results of an intensive analysis of a differential orbit improvement method utilizing observational data for a 550-kilometer altitude, near-circular, near-equatorial satellite orbit are presented. Observations of the Small Astronomy Satellite (SAS-1) are in the form of direction cosines as measured at two ground interferometer tracking stations near the Equator during the first 22 orbital revolutions (approximately 37 hours) after launch of the spacecraft. Numerical results, in both tabular...
Topics: NASA Technical Reports Server (NTRS), POSTFLIGHT ANALYSIS, SAS, SATELLITE ORBITS, NUMERICAL...
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Jun 1, 2010
06/10
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Link, F
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Photometric observations of stars in occultation and planetary atmospheric exploration from artificial satellite in orbit
Topics: HOMOGENEITY, SATELLITE MEASUREMENT, STELLAR OCCULTATION, OCCULTATION, PHOTOMETRY, PLANETARY...
Tropical rainfall affects the lives and economies of a majority of the Earth's population. Tropical rain systems, such as hurricanes, typhoons, and monsoons, are crucial to sustaining the livelihoods of those living in the tropics. Excess rainfall can cause floods and great property and crop damage, whereas too little rainfall can cause drought and crop failure. The latent heat release during the process of precipitation is a major source of energy that drives the atmospheric circulation. This...
Topics: NASA Technical Reports Server (NTRS), TRMM SATELLITE, SATELLITE-BORNE INSTRUMENTS, DATA SYSTEMS,...
Maps of electron fluxes 10,000, 1 million, and 10 million particles/sq cm/sec are presented for an ITOS-A/NOAA-1 circular orbit, inclination of 79 deg, and altitude of 1463 km. The uncertainty in the flux values is about a factor of 3, and the error in contour plotting may be plus or minus 2 deg in latitude and plus or minus 3 deg in longitude. The fractional lifetime spent within the different intensity regions is graphed.
Topics: NASA Technical Reports Server (NTRS), CIRCULAR ORBITS, IONOSPHERIC ELECTRON DENSITY, ITOS 1, MAPS,...
