Results 71 to 80 of about 42,563 (310)
Comparison of jet Mach number decay data with a correlation and jet spreading contours for a large variety of nozzles [PDF]
Small-scale circular, noncircular, single- and multi-element nozzles with flow areas as large as 122 sq cm were tested with cold airflow at exit Mach numbers from 0.28 to 1.15.
Groesbeck, D. E. +2 more
core +1 more source
The Effect of Incorporating End-User Customization into Additive Manufacturing Designs [PDF]
, 2018 In the realm of additive manufacturing there is an increasing trend among makers to create designs that allow for end-users to alter them prior to printing an artifact. Online design repositories have tools that facilitate the creation of such artifacts.
Ashley, Jonathan D.
core +2 more sources
Advanced Functional Materials, EarlyView.Viscoelasticity‐driven instabilities are harnessed to create tunable, periodic textures in 3D‐printed liquid crystalline polymers. This study illustrates how processing parameters control these spontaneous meso‐scale patterns. These unique structural architectures unlock new possibilities for functional devices, ranging from photonic components to ...
Miaomiao Zou +17 more
wiley +1 more source
Advanced Functional Materials, EarlyView.In this study, the preparation techniques for silver‐based gas diffusion electrodes used for the electrochemical reduction of carbon dioxide (eCO2R) are systematically reviewed and compared with respect to their scalability. In addition, physics‐based and data‐driven modeling approaches are discussed, and a perspective is given on how modeling can aid ...
Simon Emken +6 more
wiley +1 more source
Wind tunnel and analytical investigation of over-the-wing propulsion/air frame interferences for a short-haul aircraft at Mach numbers from 0.6 to 0.78 [PDF]
Results of analytical calculations and wind tunnel tests at cruise speeds of a representative four engine short haul aircraft employing upper surface blowing (USB) with a supercritical wing are discussed.
Henne, P. A. +4 more
core +1 more source
Spatially Tailorable Liquid Crystalline Elastomer Alignment During Digital Light Process 3D Printing
Advanced Functional Materials, EarlyView.Here, we report the fabrication of 3D printable liquid crystalline elastomer (LCE) structures with spatially tailorable alignment domains within the same layer. This work addresses the long‐standing challenge of preparing complex 3D LCE architectures with patterned functional domains to achieve nonlinear deformations. Fabrication of multi‐domains in 3D
Adam Bischoff +8 more
wiley +1 more source
Magnetic nozzles for space plasma thrusters
, 2016 The magnetic nozzle (MN) is an appealing plasma acceleration technology that enables the electrodeless, contactless, and adaptable control of a plasma jet. Using a 2-D, two-fluid plasma model, the core physical principles that enable the operation of a propulsive MN are reviewed, including the key mechanisms involved in thrust generation, plasma ...
Merino Martínez, Mario +1 more
openaire +2 more sources
Experimental study of surface pressures induced on a flat plate and a body of revolution by various dual jet configurations [PDF]
The effect of the angle of a jet to a crossflow, the performance of dual jet configurations, and a jet injected from a body of revolution as opposed to a flat plate were investigated during experiments conducted in the 7x10 tunnel at NASA Ames at ...
Jakubowski, A. K., Schetz, J. A.
core +1 more source
Advanced Functional Materials, EarlyView.A strategic spin‐polarization suppression in Fe single‐atom catalysts is proposed to enhance electrocatalytic reduction of NO to NH3. Employing a top‐down electrospinning strategy, self‐supported FeSAC with Fe‐N3S1 coordination structure and spin‐state transition is engineered from high‐spin to low‐spin.
Jialing Song +13 more
wiley +1 more source
Influence of multitube mixer nozzle geometry on CTOL-OTW jet noise shielding [PDF]
Acoustic shielding benefits for CTOL over-the-wing (OTW) applications were obtained experimentally with various multitube nozzles using a simple board to represent a wing.
Groesbeck, D., Vonglahn, U.
core +1 more source