Results 111 to 120 of about 11,483,688 (354)
Results of recent NASA research on low-speed aerodynamic characteristics of supersonic cruise aircraft [PDF]
The relatively low values of lift-curve slope produced by highly swept arrow wings, coupled with the low scrape angle of the fuselage, resulted in relatively low values of take-off and approach lift coefficients.
Coe, P. L., Jr., Graham, A. B.
core +1 more source
Liquid Metal Microrobots for Magnetically Guided Transvascular Navigation
Advanced Materials, EarlyView.Liquid metal‐based microrobots combine magnetic steering, intrinsic X‐ray visibility and softness, to navigate blood vessels even against flow. Under clinically relevant magnetic fields, liquid metal microrobots roll along vessel walls, cross endothelial barriers, and accumulate in target tissues.
Xiaohui Ju +7 more
wiley +1 more source
Türk Spor ve Egzersiz Dergisi, 2015 The basic purpose of this study was to investigate of the relationships with sprint and jump performance of velocity parameters during propulsive phase of full back squat exercise and to determine which variable was associated with which loading.
Erdal Arı, Hamit Cıhan, Ibrahim Can
doaj
AerospaceIn this paper, we present a physics- and data-driven study on the ground effect on the propulsive performance of tandem flapping wings. With numerical simulations, the impact of the ground effect on the aerodynamic force, energy consumption, and ...
Ningyu Duan +4 more
doaj +1 more source
Functional Metal Complexes for Solar–Light‐Driven Energy Conversion
Advanced Materials, EarlyView.This review provides an exhaustive summary of the recent advancements of functional metal complexes in solar‐to‐electrical, ‐chemical, and ‐thermal energy conversion, comprising material categories, design strategies, underlying principles of operation, and identified improvement of performances.
Yanyan Qin +3 more
wiley +1 more source
The Analysis of Biomimetic Caudal Fin Propulsion Mechanism with CFD
Applied Bionics and Biomechanics, 2020 In nature, fish not only have extraordinary ability of underwater movement but also have high mobility and flexibility. The low energy consumption and high efficiency of fish propulsive method provide a new idea for the research of bionic underwater ...
Guijie Liu +4 more
doaj +1 more source
Propulsive performance and vortex wakes of multiple tandem foils pitching in-line
Journal of Fluids and Structures, 2022 Pan Han, Yu Pan, Geng Liu, Haibo Dong
semanticscholar +1 more source
Wind tunnel investigation of rotor lift and propulsive force at high speed: Data analysis [PDF]
The basic test data obtained during the lift-propulsive force limit wind tunnel test conducted on a scale model CH-47b rotor are analyzed. Included are the rotor control positions, blade loads and six components of rotor force and moment, corrected for ...
Clark, R., Mchugh, F., Soloman, M.
core +1 more source
A flight dynamics investigation of compound helicopter configurations [PDF]
, 2013 Compounding has often been proposed as a method to increase the maximum speed of the helicopter. There are two common types of compounding known as wing and thrust compounding.
Ferguson, K., Thomson, D.
core
Advanced Materials, EarlyView.This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley +1 more source