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in subjects: "Reentry"

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Development of a High Velocity Solid Particle Launcher for Laboratory Erosion Studies. [Reentry Vehicle Heat Shields]

A solid particle launcher for laboratory erosion studies has been developed and successfully demonstrated. Performance of the launcher is predicted by a two-dimensional, time-dependent theoretical analysis to within the experimental uncertainty. The present device accelerates 100 μm diameter glass spheres to velocities of 2.1+/- 0.6 km/sec. The system is safe, reliable, and has a test repetition of about 2 shots/hour.

Date: March 1, 1975

Creator: Aeschliman, D. P.; Mulac, A. J.; Guzman, J. A.; Eaton, R. R. & Fox, R. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Evidence of former higher temperatures from alteration minerals, Bostic 1-A well, Mountain Home, Idaho

Cuttings from the silicic volcanics in the Bostic 1-A well near Mountain Home, Idaho have been examined petrographically with the assistance of x-ray diffraction and electron microprobe analyses. Results indicate that these rocks have been subjected to much higher temperatures than were observed in the well in 1974, when a static temperature log was run. It is not known to what extent the alternation may be due to greater depth of burial in the past, or whether it resulted from an early hydroth… more

Date: January 1, 1982

Creator: Arney, B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Investigation and evaluation of geopressured-geothermal wells

Over the life of the project, 1143 wildcat wells were screened for possible use. Although many did not meet the program's requirement for sand development, a surprisingly large number were abandoned because of downhole mechanical problems. Only 94 of these wells were completed as commercial hydrocarbon producers. Five wells of opportunity were funded for testing. Of these, two were evaluated for their hydraulic energy, thermal energy, and recoverable methane, and three were abandoned because of… more

Date: September 1, 1980

Creator: Hartsock, J.H. & Rodgers, J.A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Space nuclear safety and fuels program. Progress report

This technical monthly report covers studies related to the use of /sup 238/PuO/sub 2/ in radioisotope power systems. These studies are conducted by Los Alamos National Laboratory for the Office of Coordination and Special Projects of the US Department of Energy. Because most of the studies discussed here are ongoing, results and conclusions may change as the work continues. Published reference of the results cited in this report should not be made without explicit permission from the person in… more

Date: January 1, 1982

Creator: Bronisz, S. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Testing geopressured geothermal reservoirs in existing wells. Wells of Opportunity Program final contract report, 1980-1981

The geopressured-geothermal candidates for the Wells of Opportunity program were located by the screening of published information on oil industry activity and through direct contact with the oil and gas operators. This process resulted in the recommendation to the DOE of 33 candidate wells for the program. Seven of the 33 recommended wells were accepted for testing. Of these seven wells, six were actually tested. The first well, the No. 1 Kennedy, was acquired but not tested. The seventh well,… more

Date: January 1, 1982

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Space nuclear safety program. Progress report, August 1983

This technical monthly report covers studies related to the use of /sup 238/PuO/sub 2/ in radioisotope power systems carried out for the Office of Special Nuclear Projects of the US Department of Energy by Los Alamos National Laboratory. Most of the studies discussed here are ongoing. Results and conclusions described may change as the work continues.

Date: January 1, 1984

Creator: Bronisz, S. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Environmental and radiological safety studies: Interaction of /sup 238/PuO/sub 2/ heat sources with terrestrial and aquatic environments. Progress report, September 26-December 25, 1981

Although existing radioisotope thermoelectric generator designs have proved more than adequately safe, more information is continually sought about the heat sources to improve their safety. The work here includes studies of the effects on the heat sources of terrestrial and aquatic environments and also of the effect of the heat sources on various simulated environments. This progress report presents recent data from environmental chamber and aquatic experiments and gives the present status of … more

Date: February 1, 1982

Creator: Matlack, G. M. & Patterson, J. H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Investigation and evaluation of geopressured geothermal wells

This group of wells-of-opportunity (WOOs) consists of four reentry candidates located in Southern Louisiana. The four Louisiana wells have penetrated a thick section of deep hot and geopressured Miocene or Oligocene sand. Thus the geologic risk is essentially eliminated. Each of these wells has been abandoned. Particular emphasis was placed on selecting wells which are reported to have been left in such a mechanical condition that the risk of reentry operations is low. Every effort will be made… more

Date: March 1, 1978

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Space Nuclear Safety Program. Progress report

Date: January 1, 1984

Creator: Bronisz, S. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Design evolution and verification of the general-purpose heat source

The General-Purpose Heat Source (GPHS) is a radioisotope heat source for use in space power systems. It employs a modular design, to make it adaptable to a wide range of energy conversion systems and power levels. Each 250 W module is completely autonomous, with its own passive safety provisions to prevent fuel release under all abort modes, including atmospheric reentry and earth impact. Prior development tests had demonstrated good impact survival as long as the iridium fuel capsules retained… more

Date: unknown

Creator: Schock, A.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Heat source component development program. Quarterly report, July--September 1977

The impact-member work is directed to gaining needed knowledge and understanding of the response of materials and designs to heat-source impact conditions, and applying the technology gained to the selection or development and demonstration of preferred impact-member materials and designs that will insure fuel containment in the event of earth impact. During the past quarter, major effort has been directed to analyzing the impact-member problem in the light of knowledge and understanding gained… more

Date: October 1, 1977

Creator: Foster, E.L. Jr. (comp.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Development of a parachute recovery system for a reentry nose cone (NRV)

A two-stage parachute system consisting of a 19-in. dia ribbon parachute and a 3-ft dia guide surface parachute which is deployed 1.9 s after initial deployment is described. A 1.25 ft/sup 3/ ram air-filled flotation bag with radio beacon is used for ocean recovery of the 40-lb nose cone. Recovery was initiated by jettisoning 60 percent of the initial reentry mass prior to parachute deployment.

Date: September 1, 1977

Creator: Pepper, William B.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Reentry thermal testing of a general purpose heat source fueled clad

A General Purpose Heat Source (GPHS) module was exposed to heat treatments simulating an isothermal prelaunch condition, followed by thermal pulses corresponding to atmospheric reentry. Helium release rates were determined during each heating and modeled after simple diffusion theory. Following the tests, the module was examined metallurgically with no evidence of swelling of the cladding nor degradation of the fuel.

Date: March 1, 1982

Creator: Peterson, D. E. & Frantz, C. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Proceedings of the workshop on the modification of the upper atmosphere by Satellite Power System (SPS) propulsion effluents

Results of a workshop held in June 1979, to identify research needs for evaluating environmental impacts on the upper atmosphere (here defined as greater than 70 km) due to Satellite Power System (SPS) transport, i.e., propulsion and reentry are presented. The substantial injections of water and hydrogen therefrom may lead to global-scale regions of reduced ionization in the ionospheric F-Region that may have a serious impact on worldwide HF radio communications; and the resulting possibly sign… more

Date: June 1, 1980

Creator: Bauer, E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Environmental and radiological safety studies. Interaction of /sup 238/PuO/sub 2/ heat sources with terrestrial and aquatic environments. Progress report, July 1--September 30, 1977

The containers for /sup 238/PuO/sub 2/ heat sources in radioisotope thermoelectric generators are designed with large safety factors to ensure that they will withstand reentry from orbit and impact with the earth and safely contain the nuclear fuel until it is recovered. Existing designs have proved more than adequately safe, but the Office of the Assistant Director for Space Application of the ERDA Division of Nuclear Research and Application continually seeks more information about the heat s… more

Date: November 1, 1977

Creator: Waterbury, G.R. (comp.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Investigation and evaluation of geopressured-geothermal wells. Fairfax Foster Sutter No. 2 well, St. Mary Parish, Louisiana. Volume I. Completion and testing. Final report

The Fairfax Foster Sutter No. 2 well, located in the East Franklin area of St. Mary Parish, Louisiana, is the first successful test of a geopressured-geothermal aquifer under the Well-of-Opportunity program. The section tested was the MA-6 sand of lower Miocene age which has produced large quantities of gas from the adjacent but structurally separated Garden City field. In the subject well the observed temperature was 270{sup 0}F (132{sup 0}C) and the measured gradient was 0.77 psi/ft. The gros… more

Date: December 1, 1979

Creator: Willits, M. H.; McCoy, R. L.; Dobson, R. J. & Hartsock, J. H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Control of a high beta maneuvering reentry vehicle using dynamic inversion.

The design of flight control systems for high performance maneuvering reentry vehicles presents a significant challenge to the control systems designer. These vehicles typically have a much higher ballistic coefficient than crewed vehicles like as the Space Shuttle or proposed crew return vehicles such as the X-38. Moreover, the missions of high performance vehicles usually require a steeper reentry flight path angle, followed by a pull-out into level flight. These vehicles then must transit th… more

Date: May 1, 2005

Creator: Watts, Alfred Chapman

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Numerical simulation of two-dimensional single- and multiple-material flow fields

Over the last several years, Sandia National Laboratories has had an interest in developing capabilities to predict the flow fields around vehicles entering or exiting the water at a wide range of speeds. Such prediction schemes have numerous engineering applications in the design of weapon systems. For example, such a scheme could be used to predict the forces and moments experienced by an air-launched anti-submarine weapon on water-entry. Furthermore, a water-exit prediction capability could … more

Date: January 1, 1992

Creator: Lopez, A.R.; Baty, R.S. (Sandia National Labs., Albuquerque, NM (United States)) & Kashiwa, B.A. (Los Alamos National Lab., NM (United States))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Investigation and evaluation of geopressured-geothermal wells. Final report

This well was approved for reentry and test operations after consideration of a number of reentry prospects in Cameron Parish. This was a marsh location that required 2.3 miles of board road and replacement of two bridges. Road work was commenced on June 19, 1978, and site preparation was completed on October 25. The drilling rig moved on location on November 2. This rig was released on December 16. Reentry operations were completely unsuccessful because of failure to effect a tieback of the 7'… more

Date: January 1, 1979

Creator: Dobson, R. J.; Hartsock, J. H. & Willits, M. H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Plutonium release from pressed plutonium oxide fuel pellets in aquatic environments

Plutonium oxide pellets (80% /sup 238/Pu, 40 g each) were exposed to fresh water and sea water at two temperatures for 3 y in enclosed glass chambers. The concentrations of plutonium observed in the waters increased linearly with time throughout the experiment. However, the observed release rates were inversely dependent on temperature and salinity, ranging from 160 ..mu..Ci/day for cold fresh water to 1.4 ..mu..Ci/day for warm sea water. The total releases, including the chamber residues, show… more

Date: December 1, 1983

Creator: Patterson, J. H.; Steinkruger, F. J.; Matlack, G. M.; Heaton, R. C.; Coffelt, K. P. & Herrera, B.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Investigation and evaluation of geopressured-geothermal wells. Package No. 1 of wells-of-opportunity candidates

This group of wells-of-opportunity (WOO) consists of six candidates; one in Texas and five in Cameron Parish, Louisiana. Of the latter, two of three candidates are considered to be mutually exclusive in that each exhibits good potential for testing geopressured-geothermal aquifers which are indicated to be of sufficient volume for purposes of a 30-day test. A final selection of one location may be made from these three wells, assuming all pass screening criteria, based on estimated cost of the … more

Date: February 1, 1978

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Aerothermodynamic analysis of the SNAP-27 fuel cask

An aerothermodynamic analysis of the SNAP-27 LEM fuel cask is presented for each of three mission aborts. Aerodynamic models for point mass and six degree-of-freedom trajectories are used, and the fuel cask heating rates and temperature responses are predicted for these trajectories. A survey of analytical and experimental studies of separated flow is related to the fuel cask, and a shock tunnel test program is outlined for further fuel cask analyses.

Date: September 1, 1966

Creator: McAlees, S., Jr.; Klett, R. D.; Pearce, B. E.; Larson, D. W.; Stephens, J. T. & Spahr, H. R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Reentry thermal testing of light-weight radioisotope heater units

Two Light-Weight Radioisotope Heater Units (LWRHU) were exposed to thermal ramps simulating atmospheric reentry. The helium release rates were measured during each test and modeled after simple diffusion theory. The reentry pulses did not result in swelling of the claddings or degradation of fuel pellets.

Date: March 1, 1982

Creator: Peterson, D.E. & Starzynski, J.S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Space nuclear safety program. Progress report, July 1983

Date: November 1, 1983

Creator: Bronisz, S. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department