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Nishioka, K.

Publications and source records attributed to Nishioka, K..

17 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1997

Analyses of Extraterrestrial Particles Collected Outside The Mir Station

The European Space Exposure Facility (ESEF) has flown two collection boxes (B1 and B2) outside the MIR station from October 1995 to February 1996, during the EST EUROMIR95 mission. B1 was opened only during the encounter with the Orionides meteor stream and the last 5 weeks of the mission, while B2 stayed open during the entire mission, except during docking operations on MIR, to minimise contamination. We describe here the results of the analyses performed on various passive collectors of the COMRADE experiment. We also indicate the improvements that will be given to the collecting techniques, in the objective of the future COMET-99 collection, programmed by French CNES.

Borg, J.↗
NASA NTRS1992

Disturbances of both cometary and Earth's magnetospheres excited by single solar flares

In the solar wind a comet plays the role of a windvane that moves three-dimensionally in the heliomagnetosphere. Among the solar systems bodies, only comets have a wide range of inclination angles of their orbital planes to the ecliptic plane ranging from 0 to 90 deg. Therefore, observations of cometary plasma tails are useful in probing the heliomagnetospheric conditions in the high heliolatitudinal region. A comet can be compared to a polar-orbiting probe encircling the Sun. We will introduce two rare cases in which the magnetospheres of both the comet and the Earth are disturbed by a single solar flare.

Konno, I.↗
NASA NTRS1991

Conceptual design considerations for the Astrometric Telescope Facility

The system of an astrometric telescope on the Space Station and its support by the Station are described and its feasibility demonstrated. The conceptual design shows that such a facility provides a basis for the study of design alternatives and a point of departure for a detailed design. Basic requirements for this preliminary design are outlined.

Dyer, John W.↗
NASA NTRS1990

Astrometric Telescope Facility For The Space Station

Paper discusses proposed Astrometric Telescope Facility, installed on Space Station to study motions of stars other than Sun and possibly detect planets around them. Measurements expected to verify, modify, or refute current theories about accretion of interplanetary clouds into stars and planets. Also measures motions and distances between stars and star clusters in nearby galaxies and in our own galaxy. System consists of six subsystems (optics, structure, thermal control, command and data, pointing and control, and power and harness) in addition to focal-plane instrument composed of Ronchi ruling and drive assembly, folding and field optics, multichannel astrometric photometer, and visible imager. Elements measure relative motions of stars with accuracy of 10 microarcseconds.

Nishioka, K.↗
NASA NTRS1986

Astrometric Telescope Facility - Status report

The advent of the Space Station Program has provided an unexpected opportunity for the Astrometric Telescope Facility (ATF) study program by providing a potential long-duration on-orbit serviceable platform. It required a concept change for ATF from a free-flyer observatory to a Space-Station-based Observatory. The program was sent in this new direction at the start of fiscal year 1985, and program plans including study schedules and science and technical requirements are being revised and defined. The facility is designed to be versatile and capable of fulfilling the primary goal of planet detection, and to be highly useful for other astrophysics observations. Basically the ATF observing program is a long-duration plan requiring repetitive observations of single stars over a one to two decade period. These repetitive observations are needed to provide data necessary to conclusively determine the existence (or nonexistence) of planets of the Uranus and Neptune class in extrasolar planetary systems.

Nishioka, K.↗
NASA NTRS1984

Automated Coliform Analysis

Hydrogen evolved by coliform bacteria transferred to separate measurement cell. Electroanalytic cell mounted in insulated temperature-control bath cycled between culturing temperature and sterilizing temperature. Flow of materials into and out of cell controlled by electrically operated valves.

Nishioka, K.↗
NASA NTRS1984

Space Infrared Telescope Facility - Conceptual spacecraft definition

The Space IR Telescope Facility (SIRTF) program, which envisions a 1-m aperture cryogenically cooled telescope for 1.8-700 micron observations having an operational lifetime of several years, is now conceived as a free-flying, dedicated platform rather than a Space Shuttle instrument. Attention is presently given to the design configuration requirements of this updated concept in the matters of (1) pointing and control, (2) communications, command, and data handling, and (3) electrical power supplies.

Nishioka, K.↗
NASA NTRS1983

Method for detecting coliform organisms

A method and apparatus are disclosed for determining the concentration of coliform bacteria in a sample. The sample containing the coliform bacteria is cultured in a liquid growth medium. The cultured bacteria produce hydrogen and the hydrogen is vented to a second cell containing a buffer solution in which the hydrogen dissolves. By measuring the potential change in the buffer solution caused by the hydrogen, as a function of time, the initial concentration of bacteria in the sample is determined. Alternatively, the potential change in the buffer solution can be compared with the potential change in the liquid growth medium to verify that the potential change in the liquid growth medium is produced primarily by the hydrogen gas produced by the coliform bacteria.

Nishioka, K.↗
NASA NTRS1983

A Pioneer-class Mars climatology mission

Preliminary studies of a Pioneer-class Mars-orbiter climatology mission are reviewed. The mission requirements and objectives are discussed, as are the program requirements, a mission profile, possible spacecraft designs, payload options, and mission costs. It is shown that existing earth-orbiting communication satellites can be adapted for the climatology mission and that the overall baseline cost should be between $133 million and &168 million in 1982 dollars.

Nishioka, K.↗
NASA NTRS1979

Operational procedures for ground station operation: ATS-3 Hawaii-Ames satellite link experiment

Hardware description and operational procedures for the ATS-3 Hawaii-Ames satellite computer link are presented in basic step-by-step instructions. Transmit and receive channels and frequencies are given. Details such as switch settings for activating the station to the sequence of turning switches on are provided. Methods and procedures for troubleshooting common problems encountered with communication stations are also provided.

Nishioka, K.↗
NASA NTRS1974

Systems Study of an Automated Fire Weather Data System

A sensor system applicable to an automated weather station was developed. The sensor provides automated fire weather data which correlates with manual readings. The equipment and methods are applied as an aid to the surveillance and protection of wildlands from fire damage. The continuous readings provided by the sensor system make it possible to determine the periods of time that the wilderness areas should be closed to the public to minimize the possibilities of fire.

Nishioka, K.↗
NASA NTRS1973

Feasibility of mining lunar resources for earth use: Circa 2000 AD. Volume 1: Summary

The feasibility of obtaining lunar minerals for terrestrial uses is examined. Preliminary results gave indications that it will not be economically feasible to mine, refine, and transport lunar materials to Earth for consumption. A broad systems approach was used to analyze the problem. It was determined that even though the procedure was not economically advisable, the concept for the operations is technically sound.

Nishioka, K.↗
NASA NTRS1972

Applications analysis of high energy lasers

An analysis and comparison of laser technology with competing technologies were made to determine possible laser applications. The analysis was undertaken as follows: (1) possible applications were listed and categorized; (2) required components were enumerated and the characteristics of these components were extrapolated; (3) complete system characteristics were calculated parametrically for selected applications using the postulated component characteristics; and (4) where possible and appropriate, comparisons were made with competing systems. It was found that any large scale replacement of existing systems and methods by lasers requires many technological advances in laser and associated systems. However, several applications appear feasible, such as low orbit drag make-up, orbit changing, communications, and illumination applications.

Arno, R. D.↗