Modification of ultrasonic beamwidths by aperture control
Elliptical mask for transducer aperture to shape far field ultrasonic beam pattern
Boyd, F.↗
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Results for “Apertures”
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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In-space pattern measurement techniques for large aperture antennas.
Large aperture in-space antennas radiation pattern measurement from large launch vehicles and Apollo program
Garriott, R.↗
Aperture reflection coefficient of TEM and TE sub 01 mode parallel-plate waveguides.
Reflection coefficient of parallel plate waveguide apertures for TEM and TE modes by wedge diffraction analysis
Rudduck, R. C.↗
Aperture synthesis in radar astronomy and some applications to lunar and planetary studies.
Radar astronomy aperture synthesis technique for applying fading radar return signals to lunar and planetary mapping problems
Hagfors, T.↗
Input admittance of a circular waveguide aperture covered by a dielectric slab.
Circular waveguide aperture input admittance covered by dielectric coating derived from integral transforms and compared with measurements
Bailey, M. C.↗
The input admittance of a rectangular waveguide-fed aperture under an inhomogeneous plasma - Theory and experiment.
Input admittance of waveguide-fed rectangular aperture under flowing and stationary inhomogeneous plasmas, noting dependence on various plasma properties
Cockrell, C. R.↗
Thermal and structural modeling of a large aperture space telescope Technical summary report, 22 Jun. - 22 Sep. 1968
Thermal and structural modeling for large aperture space telescope
Marshall, K. N.↗
The admittance of a parallel-plate aperture illuminating a displaced dielectric-dielectric boundary
Admittance of parallel plate aperture illuminating displaced dielectric-dielectric boundary
Jones, J. E.↗
Analysis of a synthetic aperture radiating interferometer navigation satellite concept Interim technical report
Synthetic aperture interferometer navigation satellite concept
Klein, P. I.↗
Ultrastructure and variable aperture pore function of hexagonal subunits in plasma membranes
Ultrastructure and variable aperture pore function of hexagonal subunits in plasma membranes
Asunmaa, S. K.↗
The modal decomposition of aperture fields in detection and estimation of incoherent objects
Modal aperture field decomposition for optical detection and radiance estimation on incoherent objects
Helstrom, C. W.↗
The admittance of a parallel-plate waveguide aperture illuminating a metal sheet.
Admittance of parallel plate waveguide aperture with infinite flange illuminating metal sheet, using wedge diffraction theory and integral transform method
Burnside, W. D.↗
A new class of optical imaging systems achieving aperture synthesis from non- conventional optics by a posteriori lensless Fourier-transform holography.
Optical imaging systems achieving aperture synthesis by lensless Fourier transform holography, noting X ray astronomy, ultrasonic and space applications
Stroke, G. W.↗
Beam transmission in electron guns having a single-apertured control grid.
Beam transmission in electron guns having single apertured control grid, studying ratio of target current to cathode current
Buritz, R. S.↗
A performance evaluation of a two-element large aperture antenna array.
Gain measurement of two element phased array aperture antenna during ATS-C tracking
Deerkoski, L. F.↗
Large aperture aluminum alloy telescope mirrors.
Large aperture Al alloy telescope mirrors consisting of Tenzalloy Al coated with Ni alloy, presenting performance data
Forbes, F. F.↗
Image deblurring and aperture synthesis using a posteriori processing by Fourier-transform holography.
Image deblurring and aperture synthesis using a posteriori processing by Fourier transform holographic spatial filtering
Stroke, G. W.↗
Admittance of a waveguide-fed aperture loaded with a dielectric plug.
Waveguide fed rectangular aperture antenna with dielectric plug load, describing admittance resonant perturbation due to excited TE mode
Swift, C. T.↗