Results 101 to 110 of about 1,618,021 (303)

Bio‐Inspired Multimodal Hardware Front‐End Enabled by 2D Floating‐Gate Memory for UAV Perception

open access: yesAdvanced Functional Materials, EarlyView.
A MoS2/h‐BN /graphene floating‐gate memory underpins a bio‐inspired multimodal front end that integrates visual, inertial, and airflow cues. A 4 × 4 FG memory array encodes temporal intensity differences, while IMU‐ and airflow‐driven threshold modulation suppresses self‐motion artifacts, enabling fast, low‐power, robust autonomous UAV tracking and ...
Lianghao Guo   +11 more
wiley   +1 more source

Prediction of Wing Aerodynamic Performance in Rain Using Neural Net

open access: yesJournal of Measurement Science and Instrumentation, 2011
A new method for prediction of wing aerodynamic performance in rain condition was presented.Three-and four-layer artificial neural networks based on improved algorithm for error Back Propagation(BP)network were respectively built.Detailed approaches to ...
Rui-min ZHANG, Yi-hua CAO
doaj  

Geometric Morphometric Characterization of Isolated Colonies of Honeybees (Apis mellifera intermissa) in Northern Algeria

open access: yesBiology and Life Sciences Forum
This study investigates morpho-geometric variations in wing conformations among honeybee (Apis mellifera L.) populations in Algeria, focusing on Apis mellifera intermissa in the northern zone.
Radjaa Khedim   +2 more
doaj   +1 more source

Optimal redesign study of the harm wing [PDF]

open access: yes, 1984
The purpose of this project was to investigate the use of optimization techniques to improve the flutter margins of the HARM AGM-88A wing. The missile has four cruciform wings, located near mid-fuselage, that are actuated in pairs symmetrically and ...
Mcintosh, S. C., Jr., Weynand, M. E.
core   +1 more source

Clean Up Behind You ‐ Novel Patterning Approach for Solid Immersion Lenses

open access: yesAdvanced Functional Materials, EarlyView.
A focused ion beam (FIB) milling strategy enables rapid fabrication of solid immersion lenses (SILs) with smooth, debris‐free surfaces eliminating the need for post‐processing. The optimized pattern improves efficiency and surface quality. SILs containing NV centers are also investigated, confirming the technique's suitability for quantum and photonic ...
Aleksei Tsarapkin   +10 more
wiley   +1 more source

The effects of winglets on low aspect ratio wings at supersonic Mach numbers [PDF]

open access: yes
A computational study was conducted on two wings, of aspect ratios 1.244 and 1.865, each having 65 degree leading edge sweep angles, to determine the effects of nonplanar winglets at supersonic Mach numbers.
Keenan, James A., Kuhlman, John M.
core   +1 more source

Lift distribution in a rectangular jet [PDF]

open access: yes, 1971
Computer programs predict effect of slipstream-wing flow interaction on aerodynamic characteristics of deflected slipstream and tilt aircraft. One program calculates lift distribution, lift, and drag of wing in wide slipstream. Results permit development
Jameson, A.
core   +1 more source

Structure Formation in Butterfly Scales: Interplay of Genetic Control, Mechanical Instabilities, and Dynamic Material Properties

open access: yesAdvanced Functional Materials, EarlyView.
Butterfly wing scales are intricate cuticular functional nanosctructures. This perspective suggests that spatially varying material properties, cytoskeletal constraints, and growth‐driven mechanical instabilities shape the resulting nanoscale architectures created from single cells.
Anupama Prakash   +10 more
wiley   +1 more source

Aerodynamic Design of a Tailless Aeroplan

open access: yesActa Polytechnica, 2001
The paper presents an aerodynamic analysis of a one-seat ultralight (UL) tailless aeroplane named L2k, with a very complicated layout. In the first part, an autostable airfoil with a low moment coefficient was chosen as a base for this problem.
J. Friedl
doaj  

Multimodality in Aerodynamic Wing Design Optimization

open access: yesAIAA Journal, 2017
The application of gradient-based optimization to wing design could potentially reveal revolutionary new wing concepts.
Nicolas Bons   +3 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy