Results 71 to 80 of about 185,594 (366)
Advanced Science, EarlyView.This review introduces the concept of “general curvy surface reconstruction,” which incorporates both geometric and physical dimensions, representing an upgrade over conventional geometric reconstruction that focuses solely on spatial relationships. Particular emphasis is placed on the emerging opportunities enabled by advanced measurement techniques ...
Chen Shang +8 more
wiley +1 more source
Design and test of aircraft engine isolators for reduced interior noise [PDF]
Improved engine vibration isolation was proposed to be the most weight and cost efficient retrofit structure-borne noise control measure for single engine general aviation aircraft.
Scheidt, D. C., Unruh, J. F.
core +1 more source
Advanced Science, EarlyView.A new multi‐step β‐SiC deposition strategy for anti‐oxidation Cf/C composites successfully achieves dual‐performance breakthrough of anti‐oxidation property (≈700 h at 1500 °C)and mechanical property (bending strength of 215 MPa and adhesion strength of 9.4 MPa).
Dou Hu +7 more
wiley +1 more source
Highly integrated digital electronic control: Digital flight control, aircraft model identification, and adaptive engine control [PDF]
The highly integrated digital electronic control (HIDEC) program at NASA Ames Research Center, Dryden Flight Research Facility is a multiphase flight research program to quantify the benefits of promising integrated control systems.
Baer-Riedhart, Jennifer L. +1 more
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Effects of biofuels properties on aircraft engine performance [PDF]
, 2015 Purpose-The purpose of this paper is to examine the effects of heat capacity and density of biofuels on aircraft engine performance indicated by thrust and fuel consumption.
Kipouros, Timos +2 more
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Magnetic Flux Guides by Material Extrusion
Advanced Science, EarlyView.Magnetic flux guidance can increase inductive coupling and forces for magnetic sensors, actuators, and transducers. Here, a magnetic material extrusion method is used to fabricate flux concentration structures of arbitrary shapes with a magnetic permeability of 42. In line with simulation analysis, experimental results show that these materials provide
Jorge Cañada +4 more
wiley +1 more source
Upper atmosphere pollution measurements (GASP) [PDF]
The environmental effects are discussed of engine effluents of future large fleets of aircraft operating in the stratosphere. Topics discussed include: atmospheric properties, aircraft engine effluents, upper atmospheric measurements, global air sampling,
Holdeman, J. D., Rudey, R. A.
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Environmental Impact Assessment, on the Operation of Conventional and More Electric Large Commercial Aircraft [PDF]
, 2013 Global aviation is growing exponentially and there is a great emphasis on trajectory optimization to reduce the overall environmental impact caused by aircraft. Many optimization techniques exist and are being studied for this purpose.
Lawson, Craig P. +2 more
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Advanced Science, EarlyView.A CoCrFeNiTa0.4 eutectic high‐entropy alloy achieves a near‐theoretical yield strength of 2.6 GPa with 13.6% plasticity. This breakthrough stems from a hierarchical nanostructure (FCC‐Laves lamellae with L12/D022 precipitates), which alleviates the inter‐phase modulus/hardness mismatch through synergistic strengthening and toughening, guiding the ...
Yusha Luo +10 more
wiley +1 more source
Advanced Science, EarlyView.A novel strategy is developed by doping reduced graphene oxide (rGO) into a (HfZrTi)C medium‐entropy ceramic. This induces a hierarchical strain modification mechanism, synergistically inhibiting crack propagation at the microscale and dissipating stress at the mesoscale.
Junyi Xiao +8 more
wiley +1 more source