Results 71 to 80 of about 67,787 (224)
Covalently bonded interfaces for polymer/graphene composites [PDF]
, 2013 The interface is well known for taking a critical role in the determination of the functional and mechanical properties of polymer composites. Previous interface research has focused on utilising reduced graphene oxide that is limited by a low structural
Bengtsson, Carl +6 more
core +1 more source
Catheterization and Cardiovascular Interventions, EarlyView.ABSTRACT We describe the “skipping rope technique” for managing burr entrapment during rotational atherectomy. Sequential counterclockwise rotational force is applied to the drive shaft, generating alternative torque dynamics. This maneuver provides a safe method to disengage a stuck rotaburr, offering operators an additional strategy for this ...
Thomas J. Ford +3 more
wiley +1 more source
Advances in Mechanical Engineering, 2016 This article presents a multi-objective optimization to improve the hydrodynamic performance of a counter-rotating type pump-turbine operated in pump and turbine modes.
Jin-Woo Kim +6 more
doaj +1 more source
Low power steam turbine energy efficiency and losses during the developed power variation
Tehnički Glasnik, 2018 This paper investigates low power marine steam turbine during the variation in its developed power. The turbine is used for the Main Feedwater Pump (MFP) drive.
Vedran Mrzljak
doaj +1 more source
Suppression of Subsynchronous Vibration in the SSME HPFTP [PDF]
, 1991 Space Shuttle Main Engine (SSME) High Pressure Fuel Turbopump (HPFTP) hot-fire dynamic data evaluation and rotordynamic analysis both confirm that two of the most significant turbopump attributes in determining susceptibility to subsynchronous vibration ...
Becht, David G. +3 more
core +1 more source
Advances in Triboelectric Nanogenerators With Rotating Structure
Carbon Energy, EarlyView.The rotating TENG has been widely studied for its superiorities of simple structure, high efficiency, and stable output. This review introduced the four different principles of rotating TENG and offered a thorough summary for performance and application research through three‐level classification. Importantly, the current existing problems, challenges,
Chuguo Zhang +4 more
wiley +1 more source
Investigation of the Centaur boost pump overspeed condition at main engine shutdown on the Titan Centaur TC-2 flight [PDF]
An investigation was conducted to evaluate a potential boost pump overspeed condition which could exist on the Titan/Centaur launch vehicle after main engine shut-off.
Baud, K. W.
core +1 more source
Rotating shaft seal Patent [PDF]
, 1969 Liquid-vapor interface seal design for turbine rotating shafts including helical and molecular pumps and liquid cooling of mercury ...
Bosco, G. B., Jr., Lessley, R. L.
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Automated Process Optimization in a Novel Triple Shaft Mixer with Adaptive Mixing Modes
Chemie Ingenieur Technik, EarlyView.A novel multi‐purpose mixer with adjustable blade angle and a coaxial stirrer is developed, providing three degrees of freedom. An optimization strategy is integrated to autonomously identify optimal operating conditions through automated tests. The current draw of the main stirrer serves as the optimization criterion, while stirrer speeds, directions,
B. Schwarz, H. Kniele, J. A. Lindner
wiley +1 more source
Frontiers in Energy ResearchIn current engineering, the transition process of pump turbines from pump to turbine mode mainly includes the shutdown process of pump operating and the startup process of turbine operating, and the switching of working conditions mostly depends on the ...
Zhe Man +10 more
doaj +1 more source