Results 31 to 40 of about 3,975 (137)
EVALUATION OF A COUNTER-ROTATING ELECTRIC DUCTED FAN [PDF]
, 2022 The research and analysis presented in this study quantifies the benefits of a dual-stage counter-rotating electric ducted fan (EDF) that is optimized for high-speed operations.
Clay, Christopher S.
core
Battery Energy, Volume 5, Issue 3, May 2026.This perspective introduces a paradigm shift from optimizing disordered solid polymer electrolytes to actively programming ion transport architectures by integrating ferroelectric liquid crystals, dielectric engineering, and advanced manufacturing for all‐solid‐state batteries.
Sijie Liu +4 more
wiley +1 more source
Vertical-Screw-Auger Conveyer Feeder [PDF]
A conical feeder is attached to a vertically conveying screw auger. The feeder is equipped with scoops and rotated from the surface to force-feed regolith the auger.
Vollmer, Hubert J., Walton, Otis
core +1 more source
Characterization of Aerodynamic Performance of Boundary-Layer-Ingesting Inlet Under Crosswind [PDF]
, 2012 NASA has been studying future transport concepts, envisioned to be technically realizable in the timeframe of 2020-2030, to meet environmental and performance goals. One concept receiving considerable interest involves a propulsion system embedded into a
Lee, Byung Joon, Liou, Meng-Sing
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Aeronautical Engineering: A continuing bibliography with indexes, supplement 99 [PDF]
This bibliography lists 292 reports, articles, and other documents introduced into the NASA scientific and technical information system in July ...
core +1 more source
Analytic models of ducted turbomachinery tone noise sources. Volume 2: Subprogram documentation [PDF]
Analytical models were developed for computing the periodic sound pressures of subsonic fans in an infinite hardwall annular duct with uniform flow. The computer programs are described which are used for numerical computations of sound pressure mode ...
Clark, T. L. +3 more
core +1 more source
Effect of the Radial Velocity Distribution on the Loss Generation of a Contra-Rotating Fan in a Ventilation System. [PDF]
Entropy (Basel), 2023 Jia X, Zhang X, Guo K, Li X.
europepmc +1 more source
Design of an autonomous Lunar construction utility vehicle [PDF]
In order to prepare a site for a manned lunar base, an autonomously operated construction vehicle is necessary. A Lunar Construction Utility Vehicle (LCUV), which utilizes interchangeable construction implements, was designed conceptually.
Ash, Robert L., Chew, Mason, Dixon, Iain
core +1 more source
Optimization of blasting parameters in opencast mines [PDF]
, 2007 Drilling and blasting are the major unit operations in opencast mining. Inspite of the best efforts to introduce mechanization in the opencast mines, blasting continue to dominate the production.
Parida, Chinmay Kumar, Rout, Manmit
core
Numerical Study on Local Entropy Production Mechanism of a Contra-Rotating Fan. [PDF]
Entropy (Basel), 2023 Jia X, Zhang X.
europepmc +1 more source