Results 101 to 110 of about 3,183,819 (383)
A Hollow Shell‐Lattice Soft Robot in Flexible Pipelines with Flowing Fluids
Advanced Science, EarlyView.This study proposes a novel shell‐lattice robot with hollow bodies, capable of crawling through pipes with flowing fluids of high velocities and viscosities and mixed with impurities. The robot also features capabilities of crawling with high payloads, in curved pipes, and unthethered crawling. These unique properties make this robot high promising for
Di Guo, Yiqiang Wang, Zhan Kang
wiley +1 more source
TechnologiesPressure-gain combustion (PGC) represents a promising alternative to conventional propulsion systems for interplanetary travel due to its key advantages, including higher thermodynamic efficiency, increased specific impulse, and more compact engine ...
Andrei Vlad Cojocea +6 more
doaj +1 more source
Noise silencer design using triply periodic minimal surfaces [PDF]
INCAS BulletinNoise reduction is a problem of great global interest, as we are surrounded by machines that produce noise emissions in one way or another. The 20th century saw the start of a strong development in noise reduction methods, with different methods being ...
Andrei-George TOTU +3 more
doaj +1 more source
Measurement system for the parameters of satellite propulsion [PDF]
INCAS Bulletin, 2019 Within the STRAuSS (Advanced Solar Thermal Propulsion System for Increasing of Satellite Operational Life) project to investigate the extension of a satellite operation period, a new valve type and a new type of nozzle were designed. Extending the period
Filip NICULESCU +5 more
doaj +1 more source
Exergy analysis of marine waste heat recovery CO2 closed-cycle gas turbine system [PDF]
arXiv, 2020 This paper presents an exergy analysis of marine waste heat recovery CO2 closed-cycle gas turbine system. Based on the operating parameters obtained in system exploitation, it is performed analysis of each system component individually, as well as analysis of the whole observed system.
arxiv
Control of a Floating Wind Turbine on a Novel Actuated Platform [PDF]
arXiv, 2021 Designing a floating offshore wind turbine (FOWT) controller requires solving engineering challenges not found for fixed-bottom turbines. This paper applies several methods from the growing body of FOWT control literature to the 10-MW Ultraflexible Smart FLoating Offshore Wind Turbine (USFLOWT) baseline generator-speed controller.
arxiv
Advanced Science, EarlyView.A novel symmetrical single‐electrode triboelectric double‐row tapered roller bearing is developed for in situ condition monitoring in wind turbines. The system converts operational friction into electrical signals for simultaneous sensing at both bearing ends.
Song Wang +5 more
wiley +1 more source
Experimental Research on an Afterburner System Fueled with Hydrogen–Methane Mixtures
InventionsA new afterburner installation is proposed, fueled with pure hydrogen (100%H2) or hydrogen–methane mixtures (60% H2 + 40% CH4, 80% H2 + 20% CH4) for use in cogeneration applications.
Florin Gabriel Florean +5 more
doaj +1 more source
Investigation of the Optimum Clocking Position in a Two-Stage Axial Turbine
International Journal of Rotating Machinery, 2005 A frozen rotor approach in a steady calculation and a sliding mesh approach in an unsteady simulation are performed in a stator clocking investigation.
Dieter Bohn +2 more
doaj +1 more source
A Silicon-Based Micro Gas Turbine Engine for Power Generation [PDF]
Dans Symposium on Design, Test, Integration and Packaging of
MEMS/MOEMS - DTIP 2006, Stresa, Lago Maggiore : Italie (2006), 2007 This paper reports on our research in developing a micro power generation system based on gas turbine engine and piezoelectric converter. The micro gas turbine engine consists of a micro combustor, a turbine and a centrifugal compressor. Comprehensive simulation has been implemented to optimal the component design.
arxiv