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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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Many-Body Quantum Teleportation via Operator Spreading in the Traversable Wormhole Protocol
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Quantum Gravity in the Lab. II. Teleportation by Size and Traversable Wormholes
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Aberrations of radio signals traversing the auroral ionosphere interim report no. 1, 1 aug. 1964 - 31 jan. 1965
Radio star signal measurement beneath auroral ionosphere for satellite tracking
Bremsstrahlung from electrons traversing a focused laser beam
Electrons optical scale time averaged motion dependence in focused laser beam on light intensity gradient, calculating bremsstrahlung spectrum
Traversing probe Patent
Flow meter for measuring stagnation pressure in boundary layer around high speed flight vehicle
Apparatus for changing the orientation and velocity of a spinning body traversing a path Patent
Development of method and apparatus for spinning satellite about selected axis after reaching predetermined orientation
Asteroid encounters on Grand Tour and other missions which traverse the region beyond Mars
Asteroids flyby approaches during Jupiter missions and Grand Tours, obtaining gravitational deflection of spacecraft trajectories and mass cost estimates
Long range laser traversing system
A study was carried out to determine the feasibility of a man-portable receiver system for land survey, which would be capable of detecting the optical scatter due to molecular and aerosol constituents of the atmosphere from a vertical laser beam. Tests were run with a beacon and receiver separated by approximately one mile. The system was consistently able to detect the laser signal regardless of background conditions.
Thermal design and testing of the Apollo 17 lunar traverse gravimeter.
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Long range laser traversing system
The relative azimuth bearing between first and second spaced terrestrial points which may be obscured from each other by intervening terrain is measured by placing at one of the points a laser source for projecting a collimated beam upwardly in the vertical plane. The collimated laser beam is detected at the second point by positioning the optical axis of a receiving instrument for the laser beam in such a manner that the beam intercepts the optical axis. In response to the optical axis intercepting the beam, the beam is deflected into two different ray paths by a beam splitter having an apex located on the optical axis. The energy in the ray paths is detected by separate photoresponsive elements that drive logic networks for proving indications of: (1) the optical axis intercepting the beam; (2) the beam being on the left of the optical axis and (3) the beam being on the right side of the optical axis.
Energy loss of relativistic electrons and positrons traversing cosmic matter
Questions of adiabatic expansion are considered along with aspects of Compton scattering, bremsstrahlung, electronic excitation, synchrotron radiation, and electron-positron pair production. It is found that, unless the intergalactic magnetic field is very small, synchrotron radiation will dominate all other energy loss processes at ultrahigh electron and positron energies. The dependence of the loss rates on the cosmic epoch is also discussed.
Absorption cell - A modified multiple-traversal device
A modified White-type multiple-transversal absorption cell used with a 5-m Littrow spectrometer is described. It can be introduced at a focus of the radiation beam without altering the beam configuration. The conventional White cell consists of three mirrors of equal focal length, with a distance of two focal lengths separating one of the mirrors from a mirror pair. The modification in the design consists of the addition of two mirrors at a slant placed behind the solitary mirror of the conventional configuration. The mirror arrangement reproduces the configuration of the exit beam for any number of transversals of the cell.
Section drag coefficients from pressure probe traverses of a wing wake at low speeds
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Possible traversals of Jupiter's distant magnetic tail by Voyager and by Saturn
In the present paper, it is shown that in the spring and summer of 1981, both Voyager-2 and Saturn will cross the expected region of the tail or wake about 7000 to 8000 Jupiter radii downstream of Jupiter. Should Jupiter's tail be well defined at this distance, Saturn's magnetopause may vary significantly as Saturn moves across the tail.
ISEE-1, -2 and -3 observation of the interaction between an interplanetary shock and the earth's magnetosphere - A rapid traversal of the magnetopause
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Ionospheric plasma bubble encounters or F region bottomside traversals?
Data from in situ Atmospheric Explorer (AE) measurements and ground-based ionosonde measurements of the ion composition and concentration in the equatorial plasma bubbles are analyzed. The ionosonde produced data on the bottomside electron density (NE) profiles and aided in ascertaining the satellite measurements as being in the topside or bottomside of the F layer. The AE data were taken during low latitude evening conditions at various altitudes, and revealed ion compositions consistent with plasma bubbles originating at the altitude of the steep F region bottomside ionization gradient. The lifetimes of NO ions were observed to be short even if the ions were dominant in the regions where the bubbles form. Vertical distortions of tens of kilometers in the equatorial F region occurred in the unstable postsunset period to the extent that the bubble formation area and the bottomside plasma region became virtually indistinguishable.
Fine-scale traverses in cumulate rocks, Stillwater Complex: A lunar analogue study
The objective was to document finite-scale compositional variations in cumulate rocks from the Stillwater Complex in Montana and to interpret these data in the context of planetary magma fractionation processes such as those operative during the formation of the Earth's Moon. This research problem involved collecting samples in the Stillwater Complex and analyzing them by electron microprobe, X-ray fluorescence (XRF), and instrumental neutron activation analysis (INAA). The electron microprobe is used to determine the compositions of cumulus and intercumulus phases in the rocks, the XRF is used to determine the bulk-rock major element and trace element (Y, Sr, Rb, Zr, Ni, and Cr) abundances, and the INAA lab. is used to determine the trace element (Sc, Co, Cr, Ni, Ta, Hf, U, Th, and the REE) abundances of mineral separates and bulk rocks.