Results 61 to 70 of about 60,070 (312)
MODULAR IMPULSIVE GREEN MONOPROPELLANT PROPULSION SYSTEM (MIMPS-G): SYSTEM ANALYSIS AND PRELIMINARY DESIGN [PDF]
, 2021 Propulsion systems for small-sized spacecraft are trending toward miniaturization and system modularity. Moreover, green propulsion is becoming the norm in space propulsion, particularly in CubeSats, due to the high performance and favorable physi ...
Angelo Pasini +2 more
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Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures
Advanced Engineering Materials, EarlyView.We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann +2 more
wiley +1 more source
Characteristic analysis method for integrated multi-parameter hydro-viscous speed control system
Scientific ReportsHydro-viscous clutch has become an inevitable choice for special vehicle transmissions. As a nonlinear dynamic system with large lagging link, its timing performance is affected by input rotational speed, lubricating oil temperature and pressure and ...
Yuan Wang +9 more
doaj +1 more source
AerospaceTo alleviate the adverse effects of the flow-field structure caused by interstage sealing structures on the aerodynamic characteristics of compressor cascades, a blade-root through-slot structure was designed in this study.
Wenfeng Xu +4 more
doaj +1 more source
Designing Electric Propulsion Systems for UAVs [PDF]
, 2011 Due to the advantages of electric motors and electric batteries, the electric propulsion systems are widely used in UAVs [1,2]. The UAV's performance and endurance, the payload capacity and the flight time of the vehicle are affected highly by the structure and design of the electric propulsion system. In this paper, a new systematic design methodology
Mohamed Kara Mohamed +2 more
openaire +1 more source
Integrated electrical and mechanical modelling of integrated-full-electric-propulsion systems [PDF]
, 2007 Integrated Full Electric Propulsion (IFEP) systems are the subject of much interest at present. Current research is focused on analysing and improving aspects of subsystem and system performance. However, there is a great need to look more widely at the `
Apsley, J. +11 more
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Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)
Advanced Engineering Materials, EarlyView.Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho +8 more
wiley +1 more source
SensorsHigh-temperature strain gauges are widely used in the strain monitoring of the hot-end components of aero-engines. In the application of strain gauges, the calibration of the gauge factor (GF) is the most critical link.
Yazhi Zhao +4 more
doaj +1 more source
Journal of Advances in Modeling Earth Systems, 2020 Modeling the net carbon balance is challenging due to the knowledge gaps in the variability and processes controlling gross carbon fluxes. Terrestrial carbon cycle modeling is susceptible to several sources of bias, including meteorological uncertainty ...
Gregory R. Quetin +3 more
doaj +1 more source
Extension of Martian orbits using continuous low-thrust propulsion [PDF]
, 2012 There has recently been significant interest in exploration of the Martian surface and atmosphere with a view to future human exploration. Thus missions must be developed which are responsive to these scientific goals.
Macdonald, Malcolm +2 more
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