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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 271 records · Page 15
All sourcesNASA NTRSDOE OSTI
NASA NTRS1972

Observing from space with the Orbiting Astronomical Observatory.

Description of the OAO-A2 satellite and of its use in carrying out stellar measurements. The OAO-A2 is an unmanned satellite which carries two experiments, one measuring individual stars and the other measuring star fields. The OAO-A2 has the ability to point anywhere in celestial space with an accuracy of one arc minute and thus gives rise to certain operational considerations not known with other satellites. A detailed description is given of the operations control center responsible for planning and directing the overall OAO mission. The mission planning cycle and mission operations are discussed. Techniques for recovery of stellar control after loss of the stellar reference provided by the star trackers are considered. Improvements in the OAO series incorporated in the OAO-C satellite are cited.

Osler, S. J.↗
NASA NTRS1974

The role of man in conducting earth resources observations from space

The experience gained from the Skylab Earth Resources Experiment Package indicates that future equipment should be designed to facilitate on-orbit maintenance. Man should also be used to achieve selective data gathering, thus reducing the total requirements for data handling and analysis. This should require onboard displays of selected sensor signals for real-time analysis.

Weitz, P. J.↗
NASA NTRS1978

Resource observations from space - Present and future

The paper deals with some advances which have been made in the field of space remote sensing of the earth's natural resources and in the application of space techniques to the improvement of resource management and better understanding of the physical and dynamic nature of the earth. The current status and planned developments in the management of renewable and nonrenewable resources are reviewed.

Thome, P. G.↗
NASA NTRS1978

Environmental observations from space present and future

Spaceborne systems for measuring and predicting environmental conditions have achieved a level of development that justifies a look at the total environmental system. There are common requirements in all the disciplines, and many of the same measurements are needed to satisfy various discipline needs. It is this factor - the commonality of needs and measurements - that will be used in our future missions. The needs and requirements in the future plan will be faced by combining mission and data requirements that may be satisfied from orbiting spacecraft. There are also similarities in information requirements, as a result of which there is a need for developing an integrated data/information system where information will be produced in a format that will be of immediate utility to the users.

Greenwood, L. R.↗
NASA NTRS1979

Thunderstorm and lightning observations from Space Shuttle

A 16 mm camera equipped with a photocell optical sensor and a two-channel tape recorder will be used by Shuttle astronauts to obtain information on thunderstorms and lightning from orbital altitude. The camera will provide photographs of the lightning at night and of the convective structure of the storms during the day. The photocell sensor, which is capable of detecting and recording lightning by day and by night, will give information on the frequency and characteristics of the lightning that is occurring.

Vaughan, O. H., Jr.↗
NASA NTRS1979

Space telescope observations of normal galaxies

Observations of the stellar content of galaxies are discussed. Specific emphasis is placed on the following two types of observation: (1) those objects near enough to observe individual stars; and (2) those so distant that only their integrated light can be observed.

Oemler, A., Jr.↗
NASA NTRS1980

Advanced techniques for future observations from space

Advanced remote sensing techniques for the study of global meteorology and the chemistry of the atmosphere are considered. Remote sensing from Spacelab/Shuttle and free-flying satellites will provide the platforms for instrumentation based on advanced technology. Several laser systems are being developed for the measurement of tropospheric winds and pressure, and trace species in the troposphere and stratosphere. In addition, a high-resolution passive infrared sensor shows promise for measuring temperature from sea level up through the stratosphere. Advanced optical and microwave instruments are being developed for wind measurements in the stratosphere and mesosphere. Microwave techniques are also useful for the study of meteorological parameters at the air-sea interface.

Hinkley, E. D.↗
NASA NTRS1981

New problems of cometary observations from space

The possibility of treating the comets as natural probes of the solar system presents one of the attractive sides of cometary astronomy. In connection with the plans to study comets from space, new aspects for comets as interplanetary probes are of interst. Possible meteor formation in cometary heads and the implication for space research are considered.

Dobrovolsky, O. V.↗