Results 81 to 90 of about 3,347 (296)

On jet like bundles of vector bundles [PDF]

, 2021
Summary: We describe completely the so called jet like functors of a vector bundle \(E\) over an \(m\)-dimensional manifold \(M\), i.e. bundles \(FE\) over \(M\) canonically depending on \(E\) such that \(F(E_1\times_M E_2)=FE_1\times_MFE_2\) for any vector bundles \(E_1\) and \(E_2\) over \(M\).
Doupovec, Miroslav, Kurek, Jan, Mikulski, Włodzimierz   +2 more
openaire   +2 more sources

Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications

Advanced Materials Technologies, EarlyView.
Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke, Moses Kumi, Xiaoming Tao, Junhong Pu   +3 more
wiley   +1 more source

Bay‐functionalized [7]Helicene Bilayer Nanographenes

Advanced Optical Materials, EarlyView.
Bay‐functionalized [7]helical bilayer nanographenes are synthesized via a scalable, modular strategy enabling late‐stage diversification. Tailored methoxy, diketone, and phenazine substitutions precisely tune redox, photophysical, and chiroptical properties, delivering strong electronic circular dichroism and bright circularly polarized luminescence ...
Anmol Thanai, Vikas Sharma, Louis Minion, Hassan Khan, Hadeel Abbas, George F. S. Whitehead, Avantika Hasija, Jessica Wade, Matthew John Fuchter, Ashok Keerthi   +9 more
wiley   +1 more source

A review of technologies applicable to low-speed flight of high-performance aircraft investigated in the Langley 14- x 22-foot subsonic tunnel [PDF]

An extensive research program has been underway at the NASA Langley Research Center to define and develop the technologies required for low-speed flight of high-performance aircraft.
Banks, Daniel W., Gatlin, Gregory M., Kemmerly, Guy T., Paulson, John W., Jr., Quinto, P. Frank   +4 more
core   +1 more source

Broadband Directional Thermal Radiation with Asymmetric Femtosecond Laser‐Processed Surfaces

Advanced Optical Materials, EarlyView.
Femtosecond laser processing is used to scalably create self‐organized angled microstructures which exhibit highly directional emissivity that occurs for all polarizations. Laser parameters are tuned to alter the surface features, control the direction of emission, and enhance the directional emissivity. Electromagnetic modeling is performed to analyze
Andrew Butler, Andrew Reicks, Jack Schulz, Patrick Hayden, Alireza Kalantari Dehaghi, Kira Marr, Linxiao Zhu, Christos Argyropoulos, Craig Zuhlke   +8 more
wiley   +1 more source

Flow deflection characteristics of two-dimensional synthetic jets generated from asymmetric stepped slots

Journal of Fluid Science and Technology
This study examines the behavior of two-dimensional synthetic jets generated from asymmetric stepped slots, focusing on the formation of recirculation regions and jet deflection near the slot.
Kaito SUZUKI, Takaya HIRUMA, Takumi ITO, Koichi NISHIBE, Donghyuk KANG, Kotaro SATO   +5 more
doaj   +1 more source

A static investigation of the thrust vectoring system of the F/A-18 high-alpha research vehicle [PDF]

A static (wind-off) test was conducted in the static test facility of the Langley 16-foot Transonic Tunnel to evaluate the vectoring capability and isolated nozzle performance of the proposed thrust vectoring system of the F/A-18 high alpha research ...
Asbury, Scott C., Capone, Francis J., Mason, Mary L.   +2 more
core   +1 more source

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik, Fedor Kovalev, Mingkai Liu, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Mariusz Martyniuk, Ilya Shadrivov   +7 more
wiley   +1 more source

Effects of Momentum-FluxRatio on POD and SPOD Modes in High-Speed Crossflow Jets

Applied Sciences
High-speed jet-in-crossflow (JICF) configurations are central to several aerospace applications, including turbine-blade film cooling, thrust vectoring, and fuel or hydrogen injection in combusting or reacting flows.
Subhajit Roy, Guillermo Araya
doaj   +1 more source

A simple dynamic engine model for use in a real-time aircraft simulation with thrust vectoring [PDF]

A simple dynamic engine model was developed at the NASA Ames Research Center, Dryden Flight Research Facility, for use in thrust vectoring control law development and real-time aircraft simulation.
Johnson, Steven A.
core   +1 more source