The problem of tektites and silica-glasses
Tektites and silica glasses - history, chemical composition, geometry, nomenclature, distribution, localization, and local geology at discovery sites
GLASS↗
SEARCH · Engineering Papers
Results for “nomenclature”
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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Mylar film eliminates silk screening of equipment panels
Equipment panel designs and nomenclature are photographed on clear Mylar film to permit fast and inexpensive panel redesigns and revisions and to eliminate the silk screen process. The film is coated with an adhesive and impressed on the panel. For revisions, the film is easily peeled off and replaced.
Conger, D. R.↗
Optical monitor panel provides flexible test panel configurations
Optical monitor panel projects a chosen panel configuration upon a translucent screen by using a master projector and appropriate slide to project panel board nomenclature and a series of smaller individual projectors to superimpose monitor indicators upon the projected panel board.
Griffin, F. D.↗
Compendium of redundancy removal processes.
Redundancy removal processes, classification and nomenclature compared by plotting compression ratio vs rms error and stressing ZVA process
RANDOM SIGNAL↗
Graphical method for analyzing digital computer efficiency
Analysis method utilizes graph-theoretic approach for evaluating computation cost and makes logical distinction between linear graph of a computation and linear graph of a program. It applies equally well to other processes which depend on quatitative edge nomenclature and precedence relationships between edges.
Chan, S. P.↗
Databook for human factors engineers. Volume 2 - Common formulas, metrics, definitions
Human factors engineering manual including mathematical formulas, nomographs, conversion tables, units of measurement, and nomenclatures
Kubokawa, C.↗
The use of GERT in planning strategies for development type projects
GERT nomenclature for describing project plan or system operating policy
Moder, J. J.↗
Derivation of topographic feature names in the Apollo 15 landing region
Location and derivation of nomenclature for lunar topographic features in Apollo 15 landing region
Head, J. W.↗
Atlas and gazetteer of the near side of the moon
The atlas contains 404 annotated Lunar Orbiter 4 photographs of the near side of the moon. A short history of lunar nomenclature and a gazetteer of five indices are also included.
Gutschewski, G. L.↗
Space shuttle propulsion systems on-board checkout and monitoring system development study (extension). Volume 2: Guidelines for for incorporation of the onboard checkout and monitoring function on the space shuttle
Guidelines are presented for incorporation of the onboard checkout and monitoring function (OCMF) into the designs of the space shuttle propulsion systems. The guidelines consist of and identify supporting documentation; requirements for formulation, implementation, and integration of OCMF; associated compliance verification techniques and requirements; and OCMF terminology and nomenclature. The guidelines are directly applicable to the incorporation of OCMF into the design of space shuttle propulsion systems and the equipment with which the propulsion systems interface. The techniques and general approach, however, are also generally applicable to OCMF incorporation into the design of other space shuttle systems.
Source record↗
Fluctuating magnetic fields in the magnetosphere. II - ULF waves.
At the present time the existing satellite observations of ULF waves suggest that the level of geomagnetic activity controls the types of waves which occur within the magnetosphere. Consequently, we consider separately quiet times, times of magnetospheric substorms, and times of magnetic storms. Within each of these categories, there are distinctly different wave modes distinguished by their polarization: either transverse or parallel to the ambient field. In addition, these wave phenomena occur in distinct frequency bands. In terms of the standard nomenclature of ground micropulsation studies ULF wave types observed in the magnetosphere include quiet time transverse - Pc 1, Pc 3, Pc 4, Pc 5; quiet time compressional - Pc 1 and Pi 1; substorm compressional Pi 1 and Pi 2; storm transverse - Pc 1; storm compressional Pc 4, 5.
Mcpherron, R. L.↗
Expendable second stage reusable space shuttle booster. Volume 3: Wind tunnel test data
Wind tunnel tests to evaluate the flight characteristics of several expendable second stage/payload configurations on the reusable space shuttle booster are described. Tests were conducted at appropriate speeds, angle of attack, and Reynold's number ranges to evaluate the aerodynamic characteristics of the systems. Three specified payload shapes were tested. The subjects presented are: (1) nomenclature associated with the tests, (2) description of the wind tunnel models, and (3) discussion of aerodynamic characteristics derived from tests.
Source record↗
Discovery of two lunar features, part H
Study of the Apollo 16 photographs resulted in the discovery of two large features in the far side highlands near the eastern limb of the moon not indicated on existing lunar maps and charts. The larger unnamed feature is a three-ringed 1000 km diameter basin, and the smaller feature is a 200 km diameter crater that is located between the eastern middle and outer rings of this basin. This crater surrounds Becvar Crater. Since these newly discovered features are large enough and significant enough to warrant the assignment of names, the following names have been recommended to the Committee on Nomenclature of the IAU for consideration. Arabia is the name suggested for the newly-found basin to honor Arab contributions to astronomy. Rupes Sibericus (Siberian Scarp) is suggested for the 1 km high scarp that borders the eastern part of the middle ring of the basin. Rupes Apalaches (Appalachian Scarp) was suggested for the 2 km high scarp that borders the western part of the middle ring of the basin. Necho has been suggested for the new found 200 km diameter crater between the eastern middle and outer rings of the basin.
El-Baz, F.↗
Adapting the Goddard research and engineering management exercise (GREMEX) to nonspacecraft environments
A computerized training aid for all levels of research and development managers is presented. The computer model used for NASA training simulates development of a spacecraft. Operation of the model is described together with instructions for changing the input-data cards to alter the nomenclature and response of the model for use in other training environments.
Wales, R. O.↗
Space Shuttle flight operations.
The current flight operations concepts for the Space Shuttle are outlined, with emphasis on vehicle and ground support functions in actual missions exclusive of initial tests. The Space Shuttle sortie and delivery-retrieval mission profiles are described along with crew nomenclature and duties, vehicle launch-to-insertion operations, systems operation, correction measures for noncritical malfunctions, management of consumables, payload operations, radiation and contamination monitoring, reentry and landing procedures, and ground support operations.
Carlton, R. L.↗
Parameters critical to the morphology of fluidization craters
In order to study further the role of fluidization on the moon, a laboratory investigation was undertaken on two particulate material size fractions to determine the effect of variables, such as, duration of gas streaming, gas pressure, and 'regolith' thickness on the morphology of fluidization craters. A 3.175-mm cylindrical vent was used to simulate a gas streaming conduit. Details of the fluidization chamber are discussed together with questions of experimental control, aspects of nomenclature, crater measurements, and the effect of variables.
Siegal, B. S.↗
Objectives and models of the planetary quarantine program
The objectives of the planetary quarantine program are presented and the history of early contamination prevention efforts is outlined. Contamination models which were previously established are given and include: determination of parameters; symbol nomenclature; and calculations of contamination and hazard probabilities. Planetary quarantine is discussed as an issue of national and international concern. Information on international treaty and meetings on spacecraft sterilization, quarantine standards, and policies is provided. The specific contamination probabilities of the U.S.S.R. Venus 3 flyby are included.
Werber, M.↗
Structure of the terrestrial bow shock
Preliminary results of a bow shock study which isolates various parameters are reported. The main findings are successful isolation of shock structures by parameter set, and correlated diagnostic behavior. Conventional shock structural nomenclature is first modified to suit the results of spacecraft observations and to provide the terminology needed in the remainder of the paper. Several examples of shock morphology for a wide range of plasma states are then displayed, as seen with various diagnostics. The bow shock is described as a system in the solar wind. Advantages of the bow shock as an object of shock investigation are pointed out, and a few aims of future study are outlined.
Greenstadt, E. W.↗