Results 111 to 120 of about 131,875 (310)
Cruise noise of counterrotation propeller at angle of attack in wind tunnel [PDF]
The noise of a counterrotation propeller at angle of attack was measured in the NASA Lewis 8- by 6-Foot Supersonic Wind Tunnel at cruise conditions. Noise increases of as much as 4 dB were measured at positive angles of attack on the tunnel side wall ...
Dittmar, J. H.
core +1 more source
Advanced Materials Interfaces, EarlyView.Tailoring the morphology of MoS2 using RF Magnetron Sputtering for Enhanced Photoelectrochemical Water Splitting. ABSTRACT 2D molybdenum disulfide (MoS2) is a promising material for optoelectronic and photoelectrochemical (PEC) applications due to its unique properties.
Somnath Ladhane +9 more
wiley +1 more source
Analysis of Propeller Selection for Unmanned Aircraft
Jurnal Ilmu DasarUnmanned aircraft are usually used to perform missions, for example surveillance missions. This mission is not always carried out in a suitable location. Researchers must ensure that the aircraft can take off properly.
Danartomo Kusumoaji +3 more
doaj +1 more source
Measured noise of a scale model high speed propeller at simulated takeoff/approach conditions [PDF]
A model high-speed advanced propeller, SR-7A, was tested in the NASA Lewis 9x15 foot anechoic wind tunnel at simulated takeoff/approach conditions of 0.2 Mach number.
Woodward, Richard P.
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Water‐Stable Paper‐Based Laser‐Induced Graphene With Asymmetric Water Adhesion and Wettability
Advanced Materials Interfaces, EarlyView.Paper‐based electronics are attractive for sustainable and disposable devices, but often fail in wet environments. By introducing Parafilm into cellulose paper combined with laser conversion, two graphene surfaces with different water interactions are created.
Lingyin Meng +3 more
wiley +1 more source
Numerical Simulations Of Hydrodynamic Open-Water Characteristics Of A Ship Propeller
Polish Maritime Research, 2016 The paper presents the results of numerical simulations of ship propeller operation bearing the name of Propeller Open Water (POW) Tests. The object of tests was a sample ship propeller (PPTC1), the geometrical and kinematic data of which are available ...
Felicjancik Judyta +3 more
doaj +1 more source
Laboratory experiments on active suppression of advanced turboprop noise [PDF]
The noise generated by supersonic tip speed propellers may be a cabin environment problem for future propeller-driven airplanes. Active suppression from speakers inside the airplane cabin has been proposed for canceling out this noise.
Dittmar, J. H.
core +1 more source
Topological Point Defects in SmC* Liquid Crystals Under Mechanical Disturbance
Advanced Materials Interfaces, EarlyView.Tangetial air jet shear inducess island formation and nucleates topological point defects in uniform SmC films. Island bounded by edge dislocation loops shrink and transform into isolated point defects under continued shear. Mechanical perturbatio provides a controllable route for defect engineering in smectric liquid crystal thin films.
Gunganist Kongklad +3 more
wiley +1 more source
Science ProgressAmong the components of high-tech ships, the structural complexity of the propeller profile requires a high degree of flexibility in the CNC polishing machine.
Shihao Liu, Mao Lin, Youjun Bai
doaj +1 more source
An Electric Thrust Meter Suitable for Flight Investigation of Propellers [PDF]
A lightweight instrument that utilizes resistance-wire electric strain gases to measure propeller-shaft thrust has been developed. A wind-tunnel investigation on a propeller installed, on a single-engine pursuit airplane showed that the instrument gave a
Millenson, Morton B. +1 more
core +1 more source