Results 161 to 170 of about 42,563 (310)

Acoustic and aerodynamic performance of a variable-pitch 1.83-meter-(6-ft) diameter 1.20-pressure-ratio fan stage (QF-9) [PDF]

Far field noise data and related aerodynamic performance are presented for a variable pitch fan stage having characteristics suitable for low noise, STOL engine application. However, no acoustic suppression material was used in the flow passages. The fan
Glaser, F. W., Lucas, J. G., Woodward, R. P.   +2 more
core   +1 more source

Direct Ink Writing 3D Printing of Recyclable and Thermally Stable Vitrimers

Advanced Materials Technologies, EarlyView.
Vitrimers hold great promise in additive manufacturing as defect‐insensitive, repairable, and recyclable feedstocks. A thin‐film additively manufactured process is developed for a high‐performance vitrimer that is difficult to process traditionally.
Louis O. Vaught, Ronald Sellers, Andreas A. Polycarpou   +2 more
wiley   +1 more source

Enhancing tunnel sprayer performance through optimization of constructional parameters. [PDF]

Sci Rep
Singh J, Din M, Agrawal KN, Jyoti B, Roul AK, Mahapatra J, Pagare V.   +6 more
europepmc   +1 more source

Ground vortex flow field investigation [PDF]

Flow field investigations were conducted at the NASA Ames-Dryden Flow Visualization Facility (water tunnel) to investigate the ground effect produced by the impingement of jets from aircraft nozzles on a ground board in a STOL operation.
Delfrate, John H., Eshleman, James E., Kuhn, Richard E.   +2 more
core   +1 more source

Laser‐Based Solidification of Cermets/Cemented Carbides: Processing‐Microstructure‐Property Relationships

Advanced Materials Technologies, EarlyView.
Recent research on laser‐processed cermets and cemented carbides highlights significant advancements, yet a notable paucity of studies and persistent challenges remain. Efforts are increasingly focused on developing low‐cost, environmentally friendly cermets as alternatives to conventional materials.
Himanshu Singh Maurya, Farid Akhtar, Konda Gokuldoss Prashanth   +2 more
wiley   +1 more source

Study on the coupling mechanism of nozzle structure-cavitation impact under submerged environment. [PDF]

Ultrason Sonochem
Li X, Cheng X, Hou W, Fan S, Guo X, Lei X, Fang Z, Chen Y.   +7 more
europepmc   +1 more source

Hydrogel‐Based 3D‐Printable Stretchable Pressure Sensor

Advanced Materials Technologies, EarlyView.
We present a carbon‐black‐functionalized double‐network granular hydrogel (DNGH) pressure sensor capable of detecting pressures from 200 Pa, equivalent to a light finger touch, up to 500 kPa. The sensor exhibits signal drifts below 3.5% after 800 cycles and response times around 80 ms. Leveraging this broad sensing range, we 3D print this material into
Tianyu Yuan, Chenzhuo Li, Antonia Georgopoulou, John M. Kolinski, Esther Amstad   +4 more
wiley   +1 more source

Enhancing Permeability and Gas Extraction in Low-Permeability Coal Seams: A Study on Gas-Liquid Two-Phase Jet Technology. [PDF]

ACS Omega
Li Y.
europepmc   +1 more source

Nozzle Contour Design for Space Propulsion Module

International Journal of Mechanical and Production Engineering Research and Development, 2017
openaire   +1 more source

Innovation Meets Accessibility in Melt Electrowriting 3D Printer Design: Continuous Process Monitoring and Automation via Modular Software and Hardware

Advanced Materials Technologies, EarlyView.
This manuscript describes the design and validation of an innovative melt electrowriting printer. With a turntable collector and modular software architecture, it unifies previous advanced MEW printer capabilities and enhances adaptability for a wide range of research applications.
Timo Baroth, Tim R. Dargaville, Paul D. Dalton, Dietmar W. Hutmacher   +3 more
wiley   +1 more source