Results 81 to 90 of about 789,979 (292)

Numerical study on evolution of stationary vortices in a hypersonic delta wing boundary layer

open access: yesKongqi donglixue xuebao
Taking a hypersonic delta wing as the research object, this study first applied Linear Stability Theory (LST) to analyze the growth characteristics of stationary vortices with different spanwise wavenumbers, revealing that significantly higher growth ...
Shicheng Zhan   +3 more
doaj   +1 more source

Computational Study of Flow Interactions over a Close Coupled Canard-Wing on Fighter

open access: yesInternational Journal of Aviation, Aeronautics, and Aerospace, 2019
There have been many attempts to improve the flying performance of a fighter. By modifying the flow that occurs along the fuselage is expected to improve the performance of the aircraft. One of the indicators of combat aircraft performance is the ability
Setyawan Bekti Wibowo   +2 more
doaj   +1 more source

Flows on delta wing

open access: yes, 2007
The developments of highly maneuverable aircraft have prompted the extensive studies of the flow past a delta wing. The most distinguishing feature of the delta wing flow field is the existence of a pair of well organized and highly energetic leading ...
Sudhakar,, Ahmed, Sajeer
core  

Microfluidic Gratings for X‐Ray Phase Contrast Imaging

open access: yesAdvanced Science, EarlyView.
This work establishes a new protocol for the fabrication of X‐ray gratings that exploits the advantages of microfluidics and enables a more inexpensive, faster, and scalable production process. These X‐ray devices are fundamental for implementing X‐ray phase contrast imaging (XPCI) in laboratory and clinical settings, yet their costly and complex ...
Alessandro Rossi   +10 more
wiley   +1 more source

Delta High Football

open access: yes, 1966
Delta High football champ ride on a victory vehicle down main street ...

core  

Self‐Sustaining Sensing Systems: Integration Strategies and Signal–Power Matching in Energy‐Harvesting Electronics

open access: yesAdvanced Science, EarlyView.
Energy‐harvesting‐integrated sensors couple ambient energy conversion with sensing, processing, and wireless communication. This review organizes recent progress through integration architectures and operating principles, revisiting co‐packaged, monolithic, and co‐functional designs together with always‐on, event‐driven, and multi‐modal sensing modes ...
Taehyun Park   +5 more
wiley   +1 more source

Customized Itinerant Frequency Combs by Cascaded Nonlinear Effects

open access: yesAdvanced Science, EarlyView.
A cascaded third‐order nonlinear system generates an itinerant frequency comb with the comb center frequency decoupled from the cavity resonance. This enables arbitrary spectral scaling, flexible spacing adjustments, and real‐time central‐frequency engineering, allowing comb splicing and subdivision. The resulting versatility and reconfigurability open
Yi Wang   +8 more
wiley   +1 more source

In Situ CO2‐Induced Hydrogels for Enhancing Carbon Sequestration in Saline Aquifers

open access: yesAdvanced Science, EarlyView.
A novel integrated method that combines in situ CO2‐induced phase‐transition hydrogels formed by a C22‐tailed tertiary amine dispersion with tailored deep eutectic solvents to increase CO2 sequestration in saline aquifers. ABSTRACT Carbon sequestration in saline aquifers underpins global net‑zero emission goals, yet existing CO2 storage capacity ...
Fuchuan Liu   +5 more
wiley   +1 more source

Monostatic radar cross section of flying wing delta planforms

open access: yesEngineering Science and Technology, an International Journal, 2017
The design of the flying wing and its variants shapes continues to have a profound influence in the design of the current and future use of military aircraft.
Sevoor Meenakshisundaram Vaitheeswaran   +3 more
doaj   +1 more source

Bio‐Inspired Internal Stress Engineering for Microscale Surface Cracking in Sensitive Strain Sensors

open access: yesAdvanced Science, EarlyView.
This study presents a bio‐inspired internal stress engineering strategy to fabricate highly sensitive crack‐based strain sensors. By harnessing the internal expansion energy of microspheres and the thickness‐dependent brittle‐to‐ductile transition of ultrathin gold films, tunable microscale cracks are generated.
Jae Yeong Jang, Hanchul Cho, Young Jung
wiley   +1 more source

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