Results 31 to 40 of about 172,567 (366)
Aerospace, 2023 This paper presents the technological advancement of using friction powders to increase the absorption of acoustic liners used in the reduction of tonal noise generated by aero-engines or for other applications related to Helmholtz resonators used in ...
Constantin Sandu +3 more
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Advanced Functional Materials, EarlyView.To enhance the sustainability of electrochemical separations for resource recovery, a photoelectrochemical ion recovery system is developed that utilizes renewable solar energy. A composite integrating titianium dioxide nanorods and a redox‐copolymer enables spontaneous cation adsorption and light‐activated redox reactions for regeneration, thus ...
Ki‐Hyun Cho +3 more
wiley +1 more source
A Preliminary Study on the Development of a New UAV Concept and the Associated Flight Method
Drones, 2023 This article presents a preliminary study on the development of a new concept for an unmanned aerial vehicle (UAV) design that incorporates the use of four wings and attached systems to improve overall performance, it being classified as a hybrid ...
Tiberius-Florian Frigioescu +3 more
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Advanced Materials, EarlyView.Water impacting, freezing, melting, and being mechanically removed from the designed dielectric surfaces generates a triboeletric signal that can be used to detect various icing and de‐icing scenarios. The charge transferred directly scales with the interfacial fracture mechanism, further validating triboelectricity as an excellent ice‐detection ...
Kamran Alasvand Zarasvand +12 more
wiley +1 more source
Experimental Identification of a New Secondary Wave Pattern in Transonic Cascades with Porous Walls
AerospaceTurbomachinery shock wave patterns occur as a natural result of operating at off-design points and are accountable for some of the loss in performance. In some cases, shock wave–boundary layer (SW-BLIs) interactions may even lead to map restrictions. The
Valeriu Drăgan +4 more
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Ceramics Surface Design by Laser Texturing: A Review on Structures and Functionalities
Advanced Materials Interfaces, EarlyView.Laser surface texturing (LST) is a huge source for innovation in ceramics, as its versatility allows a swift production of very distinct functionalities for attaining high performances in several fields. This function‐oriented review gathers highly relevant applications of laser surface textured ceramics, from optical, thermal, electronic ...
E. Silva, A. Lopes, G. Miranda
wiley +1 more source
Analysis of the Behaviour of Biofuel-Fired Gas Turbine Power Plants [PDF]
, 2011 The utilisation of biofuels in gas turbines is a promising alternative to fossil fuels for power generation. It would lead to significant reduction of CO2 emissions using an existing combustion technology, although significant changes seem to be needed
Escudero Olano, Marcos +2 more
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CFD and Experimental Comparison for Micro-Pump Performance in Space Applications: A Case Study
Applied SciencesThis paper presents a case study comparing CFD predictions with experimental measurements for micropumps, with the goal of evaluating the accuracy and limitations of CFD methods in complex microscale geometries.
Oana Dumitrescu +4 more
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Vibration Energy Harvesting Potential for Turbomachinery Applications [PDF]
INCAS Bulletin, 2018 The vibration energy harvesting process represents one of the research directions for increasing power efficiency of electric systems, increasing instrumentation nodes autonomy in hard to reach locations and decreasing total system mass by eliminating ...
Adrian STOICESCU +4 more
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Journal of the Fuel Society of Japan, 1951 ガスターピンは歐洲及び米国に於いては既に実用の段階に達し, 今後釜々広く使用される傾向にある。鉄道技術研究所に於いてはこの情勢に着目して昭和22年よりガスタービンの研究に着手し, ガスタービンの各構成部分に就ての実験装置及び綜合的な運転試験の装置をつくり研究を行つた。運転試験の結果から, 定格運転に於いて効率11%, 出力2, 150HPという大略計算値に近い値に達し得る事が認められる。又この運転中に次の諸点に故障が起り夫々改良が加えられた。 (イ) 燃料噴射弁の閉塞,(口) 燃料予熱管の焼損,(ハ) 燃焼管内筒の焼損,(ニ) 姶動用点火栓の燵損,(ホ) 燃燒管外筒の赤熱,(へ) タービン翼の破断。各構成部分の実験の中微粉炭燃燒装置に依る実験は, 石炭の種類, 空燃比 ...
openaire +2 more sources