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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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Input admittance of rectangular waveguide antenna radiating into inhomogenous lossy plasma slab and dielectric constant variations
Transient radiation and conduction in slotted slab and hollow cylinder
This paper describes how expansions in leaky (or improper) modes may be used to represent the continuous spectrum in an open radiating waveguide. The technique requires a thorough knowledge of the life history of the improper modes as they migrate from improper to proper Riemann surfaces. The method is illustrated by finding the electric field resulting from an impulsively forced current located in the free space above a grounded dielectric slab.
The scattering properties of perfectly conducting and resistive strips are predicted for strips which are located on a dielectric slab backed by a perfectly conducting ground plane. The spectral domain Green's function is used to relate the currents and fields on the strip, and the resulting integral equation is solved using the method of moments. Both TE and TM strips are examined using piecewise linear and pulse subdomain basis functions, respectively, to model the current on the strip. Calculated results are compared with results measured at the NASA Langley Research Center.
Pressure, heat transfer & force distribution on slab delta wing in air and helium hypersonic flow
Pressure and heat transfer over 80-degree sweep slab delta wing in hypersonic flow - wind tunnel test
Primary and secondary proton dose rates in tissue spheres and slabs
Radiative and conductive heat fluxes in finite gas slab between parallel walls shown to be similar, using continuum theory
Hypervelocity impact of thin aluminum plate on stationary semiinfinite aluminum slab
Total electron content and equivalent slab thickness of midlatitude ionosphere determined from radio transmissions of Transit IVA Earth satellite
Cross correlation functions between two spherical waves passing through anisotropic slab
Transit IVA satellite and ionosonde differential Doppler data for mid-latitude ionosphere total electron content and equivalent slab thickness
Effect of thickness and sweep angle on longitudinal aerodynamic characteristics of slab delta planforms at hypersonic speed
Cross correlation of satellite signals through slab containing small anisotropic irregularities
Transmission energy spectra of 1-mev electrons with normal incidence on Al slabs measured in terms of transmission angle
Propagation of optical-waveguide modes in dielectric slab bisected by metal sheel
Green formula and moment functions, predicting rate of radiative energy loss from boundaries of absorbing-emitting slab or sphere
Primary and secondary particle radiation doses shielded from solar flare and Van Allen belt protons by aluminum and polyethylene slabs