Results 41 to 50 of about 9,883 (263)
Modelling & integration of advanced propulsion systems [PDF]
, 2008 This research study focuses on the design of advanced propulsion cycles, having as primary design goal the improvement on noise emissions and fuel consumption.
Doulgeris, Georgios C.
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Advanced Science, EarlyView.The pholidota‐inspired electronic skin is successfully constructed, originally realized four‐state reversible switching of terahertz‐wave reflection, absorption, transmission, and secondary reflection. In response to external demands, it issues deformation instructions, verifies the deformation state after the equipment executes the action, and thus ...
Shangjing Li +4 more
wiley +1 more source
Optimization strategies for sustainable flight routes in next-generation hybrid turboprop aircraft [PDF]
EPJ Web of ConferencesIn this paper, an optimization strategy for hybrid turboprop aircraft flight routes is introduced. The hybrid aircraft propulsion is modelled as a combination of a turboprop engine and an electric motor powered by hydrogen fuel cells.
Kovář Patrik +2 more
doaj +1 more source
Investigation of periodic characteristics of perturbed flow over a slender body
Heliyon, 2023 The asymmetric flow over a slender body was particularly sensitive to the nose at a high angle of attack (AoA). Two patterns of separation occurred on the noses of the pointed-nosed slender body and blunt-nosed slender body as open- and close-type ...
Li Zhao, Yankui Wang, Zhongyang Qi
doaj +1 more source
Aircraft engine performance and integration in a flying wing aircraft conceptual design [PDF]
, 2012 The increasing demand of more economical and environmentally friendly aero engines leads to the proposal of a new concept – geared turbofan. In this thesis, the characteristics of this kind of engine and relevant considerations of integration on a ...
Miao, Zhisong.
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Study of Free‐Space Optical Quantum Network: Review and Prospectives
Advanced Science, EarlyView.Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley +1 more source
Optimization Methodology of PMSM Cooled by External Convection in Aircraft Propulsion
Energies, 2020 Nowadays, the reduction of aircraft emissions is one of the industrial targets with a horizon time until 2050. The recent progresses in electrical drives give the opportunity to modify the aircraft propulsion based on thermal engine or gas turbine to a ...
Luigi Pio Di Noia +2 more
doaj +1 more source
Evaluation and optimisation of environmentally friendly aircraft propulsion systems [PDF]
, 2010 In this globalised world where the efficient transportation of people and goods greatly contributes to the development of a given region or country, the aviation industry has found the ideal conditions for its development, thereby becoming in one of ...
Celis, Cesar
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Light‑Driven Propulsion of Graphene Aerogels in Microgravity
Advanced Science, EarlyView.Ultralight graphene aerogels convert laser light into thrust. Parabolic‐flight experiments directly compare their motion in microgravity and at 1 g, revealing order‐of‐magnitude enhancements in distance, velocity, and transient thrust when weight and friction are removed (∼50 times enhancement).
Omnia Khattab +10 more
wiley +1 more source
A Novel Airframe Design Methodology For Silent Aircraft [PDF]
, 2008 The impact of noise on civil aviation is not just a localised airport problem, but a global concern, due to the ever-increasing demands for passenger travel.
Mistry, Sunil
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