SEARCH · Engineering Papers
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
On-site evaluation of bonding and grounding of electrical equipment at KSC to minimize hazards from electrical fault, lightning, explosion, and radiation - Vol. 2
All-sky camera for monitoring cloud cover, water vapor photometer for monitoring atmospheric precipitation, and other meteorological sensors - telescope site evaluation
Circuits, components, and implant site evaluations for arterial blood pressure analyses on primates
NASA sedimentary test site geologic evaluation, comparing panchromatic aerial photography and side-looking airborne radar /SLAR/ imagery
Evaluation of lunar module guidance system performance over approach terrain of five proposed Apollo landing sites
An optical communications system, consisting of a gallium arsenide laser transmitter and three instrumented ground sites, was evaluated during the Gemini 7 flight. Considered was the use of crewmembers as a pointing element and the exploration of the atmosphere by optical coherent radiator outside the atmosphere. Results show that beacon lasers of greater survivability in field environments are needed to overcome unfavorable cloud conditions. A 1-watt argon laser is visible at orbital altitudes.
Remote sensing data were obtained at site 157 in May 1968 under mission 73 of the NASA aircraft program. The site is located in an area of high temperatures and extreme aridity immediately west of the Imperial Valley, Southern California. Site 157 is partially surrounded by pre-Cenozoic crystalline rocks exposed in the Fish Creek, Vallecito, and Tierra Blanca Mountains. The study area itself is underlain by more than 20,000 feet of sedimentary strata of late Cenozoic age.
Airborne measurements were made over controlled oil-spill test sites to evaluate various techniques, utilizing reflected sunlight, for detecting oil on water. The results of these measurements show that (1) maximum contrast between oil and water is in the UV and red portions of the spectrum; (2) minimum contrast is in the blue-green; (3) differential polarization appears to be a very promising technique; (4) no characteristic absorption bands, which would permit one oil to be distinguished from another, were discovered in the spectral regions measured; (5) sky conditions greatly influence the contrast between oil and water; and (6) highest contrast was achieved under overcast sky conditions.
A study was conducted in Bennett County, South Dakota, to establish a rangeland test site for evaluating the usefulness of ERTS data for mapping soil resources in rangeland areas. Photographic imagery obtained in October, 1970, was analyzed to determine which type of imagery is best for mapping drainage and land use patterns. Imagery of scales ranging from 1:1,000,000 to 1.20,000 was used to delineate soil-vegetative physiographic units. The photo characteristics used to define physiographic units were texture, drainage pattern, tone pattern, land use pattern and tone. These units will be used as test data for evaluating ERTS data. The physiographic units were categorized into a land classification system. The various categories which were delineated at the different scales of imagery were designed to be useful for different levels of land use planning. The land systems are adequate only for planning of large areas for general uses. The lowest category separated was the facet. The facets have a definite soil composition and represent different soil landscapes. These units are thought to be useful for providing natural resource information needed for local planning.
Radar imagery used in geologic evaluation of glass-rich igneous rock and ancient flood plain of Twin Buttes area, Arizona
On-site surveys and evaluations of existing facilities suitable for spacecraft sterilization and microbial clean assembly methods
Using remote sensors for detection, analysis, and mapping of snow and ice
Imagery of the Atlantic shoreline zone of the Central Atlantic Regional Ecological Test Site (CARETS) was evaluated for classifying land use and land cover, employing the USGS Geographic Application Program's land use classification system. ERTS data can provide a basis for land cover and land use mapping within the shoreline zone, however because of the dynamic nature of this environment, two additional terms are considered: vulnerability of classes to storms and progressive erosion, and sensitivity of the classes to man's activities.
Explore the source record for details and available documents.
Field data collected in support of remote sensing projects are generally used for the following purposes: (1) calibration of remote sensing systems, (2) evaluation of experimental applications of remote sensing imagery on small test sites, and (3) designing and evaluating operational regional resource studies and inventories which are conducted using the remote sensing imagery obtained. Field data may be used to help develop a technique for a particular application, or to aid in the application of that technique to a resource evaluation or inventory problem for a large area. Scientists at the Forestry Remote Sensing Laboratory have utilized field data for both purposes. How meaningful field data has been collected in each case is discussed.
An analysis of space tug operating techniques is presented. The subjects discussed are: (1) sustaining engineering requirements, (2) off-site facility requirements, (3) evaluation of tug checkout alternatives, and (4) spares provisioning. Tables of data are included to clarify the written presentation.
Utilizing spatial filtering for analyzing structural configuration of Michigan Basin for application to remote sensing
Description of tasks and facilities involved in the processing of Space Shuttle missions at the Kennedy Space Center. Responsibilities considered include vehicle integration and launch, recovery and refurbishment of the spent solid rocket motors, and landing and refurbishment of the Orbiter vehicles. Facility options are evaluated for transportation, on-site processing, mating, and recovery of the booster, drop tank, and Orbiter elements. Processing flow patterns are outlined for assembly, maintenance, checking, safing, refurbishment, and launch operations.