Results 91 to 100 of about 228,844 (310)
Installation and airspeed effects on jet shock-associated noise [PDF]
Experimental acoustic data are presented to illustrate, at model scale, the effect of varying the nozzle-wing installation on shock-associated noise, statically and with airspeed. The variation in installations included nozzle only, nozzle under-the-wing
Goodykoontz, J., Vonglahn, U.
core +1 more source
Advanced Materials Technologies, EarlyView.A MEMS‐integrated metamaterial filter enables continuous, low‐voltage spectral tuning in the long‐wavelength infrared (LWIR). The device employs extraordinary optical transmission in a dual suspended metasurface stack, where electrostatic actuation precisely controls the intermembrane air gap.
Oleg Bannik +6 more
wiley +1 more source
Advanced Materials Technologies, EarlyView.This review presents recent progress in vision‐augmented wearable interfaces that combine artificial vision, soft wearable sensors, and exoskeletal robots. Inspired by biological visual systems, these technologies enable multimodal perception and intelligent human–machine interaction.
Jihun Lee +4 more
wiley +1 more source
Numerical Simulation and Experiment on Impulse Noise in a Small Caliber Rifle with Muzzle Brake
Shock and Vibration, 2019 Blast waves generated from the muzzles of weapons may exert negative effects, such as shock waves and impulse noise. If the weapon is fired with a muzzle brake, these effects are recognized to be more severe.
Xin Yi Zhao +5 more
doaj +1 more source
Numerical simulation of gas jet noise in the underwater blowdown process
Zhongguo Jianchuan Yanjiu, 2019 [Objectives] The characteristics and influencing factors of the radiated noise generated by the blowdown of sewage from underwater vehicles is investigated.[Methods] The flow field analysis and the quantitative calculation of radiated noise of large ...
Cai Biaohua +4 more
doaj +1 more source
A comparison of the noise produced by a small jet on a moving vehicle with that in a free jet [PDF]
A 2.54 cm (1.00 in.) nozzle supplied with nitrogen was mounted above an automobile and driven over an asphalt roadway past stationary microphones in an attempt to quantify the effects of the vehicle motion on jet mixing noise.
Norum, T. D.
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Advanced Materials Technologies, EarlyView.This work highlights the impact of incorporating graphene nanoflakes into precursor inks of MAPbBr3 for inkjet‐printed optoelectronic device applications. A substantial modification of the crystallization dynamics is reported despite miniscule concentrations.
Kenneth Lobo +12 more
wiley +1 more source
Combustion noise from gas turbine aircraft engines measurement of far-field levels [PDF]
Combustion noise can be a significant contributor to total aircraft noise. Measurement of combustion noise is made difficult by the fact that both jet noise and combustion noise exhibit broadband spectra and peak in the same frequency range.
Krejsa, Eugene A.
core +1 more source
Advanced Materials Technologies, EarlyView.Flexible sweat sensor patch integrating graphene‑interfaced gold microelectrodes functionalized with bio‑receptors and ion‑selective membrane, coupled with a capillary‑driven microfluidic layer and portable potentiostat electronics for multiplexed monitoring of inflammatory, metabolic, and electrolyte biomarkers in microliter sweat volumes.
Roomia Memon +4 more
wiley +1 more source
The Sources of Jet Noise: Experimental Evidence
13th AIAA/CEAS Aeroacoustics Conference (28th AIAA Aeroacoustics Conference), 2007 The primary objective of this investigation is to determine experimentally the sources of jet mixing noise. In the present study, four different approaches are used. It is reasonable to assume that the characteristics of the noise sources are imprinted on their radiation fields.
Tam, Christopher K. W. +3 more
openaire +2 more sources