Results 71 to 80 of about 118,726 (281)
Adaptive and Online Health Monitoring System for Autonomous Aircraft [PDF]
, 2012 Good situation awareness is one of the key attributes required to maintain safe flight, especially for an Unmanned Aerial System (UAS). Good situation awareness can be achieved by incorporating an Adaptive Health Monitoring System (AHMS) to the aircraft.
Howe, Joe M. +3 more
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ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Liquid coal tar (CT) is synthesized into hypercrosslinked polymers (HCPs) via the Friedel–Crafts alkylation, followed by oxidation‐carbonization to form disordered microporous carbon. The resulting CF2CT exhibits a high three‐electrode specific capacitance of 342 F g−1 at 1 A g−1, and the assembled symmetric supercapacitor illuminates a light sign ...
Zhichao Ren +6 more
wiley +1 more source
Study on radar electronic module cooling by using diamond/copper composites
Functional Diamond, 2023 Diamond/copper composites are regarded as a new generation of heat dissipation materials because of their good thermal conductivity and matched thermal expansion coefficient to semiconductor materials.
Jinwang Li, Tianshu Cong, Shugang Dai
doaj +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Thermal charging cells (TCS) face two main challenges that limit their practical applications: 1) Still lacking the systems suitable for operation under higher temperature environments, and 2) there are limitations in the self‐sustaining performance of continuous discharge under temperature differences, which holds critical significance for the real ...
Tingting Meng, Yimin Xuan, Yunjie Xiong
wiley +1 more source
Invariant manifolds and orbit control in the solar sail three-body problem [PDF]
, 2008 In this paper we consider issues regarding the control and orbit transfer of solar sails in the circular restricted Earth-Sun system. Fixed points for solar sails in this system have the linear dynamical properties of saddles crossed with centers; thus ...
Colin R. McInnes +6 more
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InfoMat, EarlyView.A multi‐defect‐engineered ZnO/GO flat‐band heterojunction enables a high‐dynamic‐range, low‐power optoelectronic synapse through enhanced photoresponse and reduced dark current. The device achieves a record 74.9 dB dynamic range and ultralow energy consumption of 23 fJ per spike at 1 mV.
Zhiyao Zheng +12 more
wiley +1 more source
Effect of Wedge-Shaped Deflectors on Flow Fields of Dual-Stream Jets [PDF]
, 2007 The effect of wedge-shaped fan flow deflectors on the mean and turbulent flow-fields of dual-stream jets is investigated. Several wedge-shaped deflector concepts were used to create asymmetry in the plume of a dual-stream jet issuing from a scaled down ...
Papamoschou, Dimitri +2 more
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A tunable microwave absorption metamaterial inspired by moths evading bat detection
InfoMat, EarlyView.Electromagnetic radiation in the current environment has become complex and uncontrollable due to the advancement of wireless technology. Inspired by the moth surface cilia to bend and evade bat sonar detection, our work introduces a metamaterial incorporating broadband and tunable microwave absorption properties combined with deep learning algorithms.
Yijie Liu +13 more
wiley +1 more source
SensorsThis research unveils a cutting-edge navigation system for deep space missions that utilizes cosmic microwave background (CMB) sensor readings to enhance spacecraft positioning and velocity estimation accuracy significantly.
Pedro Kukulka de Albuquerque +3 more
doaj +1 more source
Large scale optimization of transonic axial compressor rotor blades [PDF]
, 2008 [First Paragraphs] In the present work the Multipoint Approximation Method (MAM) by Toropov et al. (1993) has been applied to the shape optimization of an existing transonic compressor rotor (NASA rotor 37) as a benchmark case.
Polynkin, A., Shahpar, S., Toropov, V.
core +1 more source