Results 81 to 90 of about 26,083 (287)
Jixie chuandong, 2012 The working mechanism of the stationary crescent for radial compensation of the inner mesh gear pumps is studied and the model was established.Then the force of the above and below stationary crescent during the process of operation and the changing ...
郝志勇, 张建卓, 李康康
doaj
Ultra-heavy vertical lift system: The Heli-Stat [PDF]
, 1975 A hybrid VTOL airship which is combined with helicopters is evaluated. The static lift of the airship supports approximately the full empty weight of the entire assembly.
Piasecki, F. N.
core +1 more source
JCPP Advances, EarlyView.Abstract Introduction Suicide is a significant public health concern and the second leading cause of death in adolescents and young adults. This study sought to better understand differences in demographic and clinical characteristics of young people who attempted suicide during three phases of this developmental period: late adolescence (14–17 years),
Nicholas M. Brdar +7 more
wiley +1 more source
A Comprehensive Compensation Method for High-speed Gear Pumps Without the Cavitation Phenomenon
Jixie chuandong, 2023 In order to improve the cavitation performance under high-speed for external gear pumps, a comprehensive compensation method with the small backlash, innovative annulus relief-groove and increasing inlet oil-pressure is proposed.
Li Yulong, Hou Xinyu, Zhang Lihua
doaj
Technology requirements for advanced earth orbital transportation systems. Volume 2: Summary report [PDF]
The results of efforts to identify the technology requirements for advanced earth orbital transportation systems are reported. Topics discussed include: (1) design and definition of performance potential of vehicle systems, (2) advanced technology ...
Bangsund, E. L., Hepler, A. K.
core +1 more source
A Combined Methodology for Studying the Axial Balancing Mechanism of Orbit Annular Hydraulic Machines [PDF]
, 2015 A customized combined methodology, based on both 2D CFD and lumped parameters numerical modeling, useful for simulating the hydraulic behavior of orbit annular machines, has been developed and here presented.
Bigliardi, Elisa +5 more
core +1 more source
Journal of International Development, EarlyView.ABSTRACT Field visits are common phenomena with non‐governmental organisations in Uganda. During these visits, Ugandan national staff guide visitors on series of meetings and interactions in the field. Following an actor‐oriented approach and drawing on ethnographic data on 14 field visits, this paper understands the field visit as a microcosm for the ...
Caspar Edward Swinkels
wiley +1 more source
Optimization of Gerotor Pumps with Asymmetric Profiles through an Evolutionary Strategy Algorithm
Machines, 2019 Gerotor pumps are widely used for fuel and lubricating oil distribution, since they provide an economic and compact solution for low-pressure fluid systems.
Andrea De Martin +2 more
doaj +1 more source
Review of the transmissions of the Soviet helicopters [PDF]
A review of the following aspects of Soviet helicopter transmissions is presented: transmitted power, weight, reduction ratio, RPM, design configuration, comparison of different type of manufacturing methods, and a description of the materials and ...
Chaiko, Lev I.
core +1 more source
Computational fluid dynamics and particle image velocimetry assisted design tools for a new generation of trochoidal gear pumps [PDF]
, 2015 Trochoidal gear pumps produce significant flow pulsations that result in pressure pulsations, which interact with the system where they are connected, shortening the life of both the pump and circuit components.
Castilla López, Roberto +6 more
core +2 more sources