Results 51 to 60 of about 244,404 (292)
Indoor Radar Cross Section Measurements of Simple Targets
Journal of Aerospace Technology and Management, 2012 This paper has described the radar absorbing materials characterization and radar cross section measurements, in the frequency range of 8 to 12 GHz, using a very simple setup.
Marcelo Alexandre Souza Miacci +4 more
doaj +1 more source
Large scale optimization of transonic axial compressor rotor blades [PDF]
, 2008 [First Paragraphs] In the present work the Multipoint Approximation Method (MAM) by Toropov et al. (1993) has been applied to the shape optimization of an existing transonic compressor rotor (NASA rotor 37) as a benchmark case.
Polynkin, A., Shahpar, S., Toropov, V.
core +1 more source
Advanced Functional Materials, EarlyView.The coordination in carbonate solvents and degradation products of lithium difluoro(oxolato) borate (LiDFOB) salt enables sufficient passivation of both LiNi0.8Mn0.1Co0.1O2 (NMC811) cathode and graphite anode in the absence of ethylene carbonate (EC).
Thomas J. Watts +2 more
wiley +1 more source
Ultrafast Adhesion/Friction Bidirectionally Switchable Control by Vibration
Advanced Functional Materials, EarlyView.Bioinspired gradient smooth architectures enable vibration‐switchable adhesion/friction with 62.02 kPa adhesion strength, 131.57 kPa shear strength, tilt angles ≥ 3°, roughness ≥ Ra 0.8 µm, 400 Hz antivibration robustness, and dual‐mode control. The synergy of geometry optimization and vibration modulation tuning bridges multidomain adaptability and ...
Jian Chen +10 more
wiley +1 more source
Contemporary Haqiqī Calculation: Analysis of Rinto Anugraha's Lunar Eclipse Calculation Methods
Journal of Islamic Law, 2022 Classical Islamic astronomy literature that discusses eclipse calculations still uses the ḥaqiqī bi al-taqrīb method with low accuracy. In its development, Islamic astronomical literature studies the calculation of lunar eclipses with high accuracy ...
'Alamul Yaqin
doaj +1 more source
Low-energy particle radiation environment at synchronous altitude [PDF]
, 1972 The degradation of thermal control coatings of satellites due to the effects of low energy charged particles in the space environment is discussed. Data obtained from ATS-5 satellite measurement of proton and electron fluxes are presented. The variations
Lens, S. K., Shelley, E. G.
core +1 more source
Asynchronous displays for multi-UV search tasks [PDF]
, 2012 Synchronous video has long been the preferred mode for controlling remote robots with other modes such as asynchronous control only used when unavoidable as in the case of interplanetary robotics.
Carpin S. +7 more
core +2 more sources
Deformation and Degradation in 18650 Li‐Ion Cells Under Freeze‐Thaw Cycling
Advanced Functional Materials, EarlyView.This study investigates the impact of freezethaw degradation of 18650 cells via combined electrochemical and x‐ray imaging studies. High‐resolution synchrotron X‐ray tomography reveals deformation of the jelly‐roll structure and delamination of electrode active materials in cells cycled at 1C and 4C. These structural changes are quantitatively assessed
Xunkai Chen +5 more
wiley +1 more source
Reduced dimension modeling of leading edge turbulent interaction noise [PDF]
, 2014 A computational aeroacoustics approach is used to model the effects of real airfoil geometry on leading edge turbulent interaction noise for symmetric airfoils at zero angle of attack.
Bailly C. +5 more
core +1 more source
The Promise of Solid Lubricants for a Sustainable Future
Advanced Materials, EarlyView.Lubricants are vital for technology, saving energy and resources. The industry seeks sustainable solutions beyond fossil fuels. Solid lubricants offer extremely low friction and reduce environmental impact, especially in harsh conditions. Can these solids truly replace liquid lubricants, or are they limited to extreme applications?
Philipp G. Grützmacher +7 more
wiley +1 more source