Results 61 to 70 of about 264,581 (310)
Key Technologies for the Application of the Electric Propulsion System on the GEO Satellite Platform
Measurement + Control, 2008 Applying the electric propulsion system on GEO satellite in the future is an inevitable trend in China. For this purpose, a lot of problems should be solved not only thruster itself but also the whole system.
Bian Bingxiu, Wei Yanming, Li Yong
doaj +1 more source
System controls challenges of hypersonic combined-cycle engine powered vehicles [PDF]
Hypersonic aircraft with air-breathing engines have been described as the most complex and challenging air/space vehicle designs ever attempted. This is particularly true for aircraft designed to accelerate to orbital velocities.
Ianculescu, George D. +1 more
core +1 more source
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
Beamed energy propulsion [PDF]
Beamed energy concepts offer an alternative for an advanced propulsion system. The use of a remote power source reduces the weight of the propulsion system in flight and this, combined with the high performance, provides significant payload gains. Within
Shoji, James M.
core +1 more source
Advanced Engineering Materials, EarlyView.Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley +1 more source
Investigation of space rendezvous propulsion system requirements. Volume I - Summary Final report, 20 Nov. 1961 - 19 Dec. 1962 [PDF]
Space rendezvous propulsion system requirements - phase and mission analyses, and propulsion system design ...
Lysdale, C. A.
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Advanced Functional Materials, EarlyView.Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco +8 more
wiley +1 more source
Ocean‐Induced Melt Triggers Glacier Retreat in Northwest Greenland
Geophysical Research Letters, 2018 In recent decades, tidewater glaciers in Northwest Greenland contributed significantly to sea level rise but exhibited a complex spatial pattern of retreat.
M. Wood +7 more
doaj +1 more source
Photoswitching Conduction in Framework Materials
Advanced Functional Materials, EarlyView.This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez +4 more
wiley +1 more source
Electric and hybrid vehicle system R/D [PDF]
The work being done to characterize the level of current propulsion technology through component testing is described. Important interactions between the battery and the propulsion system will be discussed.
Schwartz, H. J.
core +1 more source