Development of detection techniques for the penetration of bacterial cells through isolation suit materials.
Bio-Isolator Suit for aseptic assembly of spacecraft in sterile chamber
Bryce, A.↗
SEARCH · Engineering Papers
Results for “PENETRATION”
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.
Leads integral with the internal interconnection that penetrate the molded wall of a package
Multiplicity of external ribbon leads makes possible connections to a sealed or encapsulated microassembly. The leads are integral with the internal connections on a single part that can be fabricated economically by fine-detail electroplating.
Marley, J.↗
Characterization of silicon dioxide for a capacitance-type meteoroid penetration detector
Fabrication and testing of large area metal oxide silicon capacitors for micrometeoroid counting in space
Canady, K. S.↗
Attached flow gust penetration loads
Attached flow gust loads of slender bodies moving supersonic speeds
Scholnick, I. M.↗
Penetrating radiations
High energy electromagnetic radiation and energetic particles from sun, galaxies, and nuclear explosions in spacecraft environment
Gaines, E. E.↗
A procedure for assessing aircraft turbulence- penetration performance
Subsonic transport aircraft performance assessment during atmospheric turbulence
Loomis, J. P.↗
Evaluation of new penetrating sporicide potentially useful in spacecraft sterilization Progress report
Sporicide as additive to spacecraft potting compounds or as surface agent for spacecraft sterilization
Aldridge, C.↗
Methyl alcohol used as penetrant inspection medium for porous materials
Porous material thoroughly wetted with alcohol shows persistent wet line or area at locations of cracks or porosity. Inspection is qualitative and repeatable, but is used quantitatively with select samples to grade density variations in graphite blocks. Photography is employed to achieve permanent record of results.
Hendron, J. A.↗
Penetrating radiation system for detecting the amount of liquid in a tank Patent
Radiation source and detection system for measuring amount of liquid inside tanks independently of liquid configuration
Kaminskas, R. A.↗
Penetration and spreading of transverse jets of hydrogen in a Mach 2.72 airstream
Schlieren photography of flow distribution for transverse hydrogen jets from flat plate into Mach 2.72 airstream
Billig, F. S.↗
Electron and bremsstrahlung penetration and dose calculation
Calculation of electron and bremsstrahlung dose deposition with energy deposition, transmission, and reflection coefficients for electrons
Burrell, M. O.↗
Sensor for detecting meteoroid penetration of pressurized cells
Cold cathode glow discharge tube for detecting meteoroid puncture of pressurized cells
Mc Master, L. R.↗
Penetration of drops into high-velocity airstreams
Explore the source record for details and available documents.
Ingebo, R. D.↗
Electron and bremsstrahlung penetration and dose calculation
Various techniques for the calculation of electron and bremsstrahlung dose deposition are described. Energy deposition, transmission, and reflection coefficients for electrons incident on plane slabs are presented, and methods for their use in electron dose calculations were developed. A method using the straight-ahead approximation was also developed, and the various methods were compared and found to be in good agreement. Both accurate and approximate methods of calculating bremsstrahlung dose were derived and compared. Approximation is found to give a good estimate of dose where the electron spectrum falls off exponentially with energy.
Watts, J. W., Jr.↗
The estimation of galactic cosmic ray penetration and dose rates
This study is concerned with approximation methods that can be readily applied to estimate the absorbed dose rate from cosmic rays in rads - tissue or rems inside simple geometries of aluminum. The present work is limited to finding the dose rate at the center of spherical shells or behind plane slabs. The dose rate is calculated at tissue-point detectors or for thin layers of tissue. This study considers cosmic-rays dose rates for both free-space and earth-orbiting missions.
Burrell, M. O.↗
Explorer satellite measurements of meteoroid penetration rates in structural materials
Explore the source record for details and available documents.
Oneal, R. L.↗
Penetration of retrorocket exhausts into subsonic counterflows.
Simulation experiments were performed in the NASA Langley Full Scale Tunnel to investigate the retroplume heating rates encountered by a lander vehicle during a terminal descent to a planetary surface. A 10% scale model of the Viking Lander with freestream velocity conditions from 37 to 75 ft/sec was used for simulation. The simulation test data were close to the theoretical predictions of Hill et al. (1971).
Jarvinen, P. O.↗
Powered fire nozzle for fast penetration of structures: A concept
Nozzle has been proposed with tip that will punch through wall very quickly. It would allow extinguishing agent to be delivered inside closed structure in minimum amount of time. Two versions of nozzle have been conceived: one operated from hydraulic pressure source and one activated by explosive charge.
Parker, J. F.↗