SEARCH · Engineering Papers
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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Omnidirectional characteristics of scattering of acoustic waves from statistically rough surfaces, measuring scattering cross section as function of incidence and observation angles
Backscatter of electromagnetic waves from rough layer simulated by acoustic backscattering from partially submerged Plexiglas layer
Lunar surface roughness comminution estimated by considering meteoric body catering process
Error correction in lunar slope angles and surface roughness of Ranger photographs
Effect of surface roughness and waviness on overall thermal contact resistance
Backscatter of electromagnetic waves from rough surface
Kirchhoff approximation used to calculate backscatter of ultrasonic waves from rough layer
Roughness effect on heat transfer to hemisphere cylinders in hypersonic flow
Statistical model of lunar surface roughness, shadow, and thermal emission
Statistical model of lunar surface roughness for shadow and infrared emission characteristics
Statistical analysis and physical interpretation of scattering from surfaces with different roughness scales
Tests at Mach 8 on cone, analyzing effect of roughness elements and variable entropy on transition and heat transfer distribution
Acoustic waves omnidirectional scattering by rough imperfectly reflecting surfaces analyzed using physical optics method
Rough metal surface bidirectional reflectance, using Davies and Beckmann models
Model for lunar surface roughness effect on emission of thermal IR radiation and casting of shadows in sunlight
Geometrical self-shadowing of random rough surface described by Gaussian statistics in wave backscattering phenomena
Vector field theory of time dependent backscatter from distant slightly rough sphere for pulsed and sinusoidally steady state sources
In this paper, we investigate the feasibility of estimating aerodynamic roughness parameter from interferometric SAR (INSAR) measurements.