Results 221 to 230 of about 32,156 (264)

A hypersonic lift mechanism with decoupled lift and drag surfaces

Science China Physics, Mechanics and Astronomy, 2013
In the present study, we propose a novel lift mechanism for which the lifting surface produces only lift. This is achieved by mounting a two-dimensional shock-shock interaction generator below the lifting surface. The shock-shock interaction theory in conjunction with a three dimensional correction and checked with computational fluid dynamics (CFD) is
YiZhe Xu, ZhiQi Xu, ShaoGuang Li, Juan Li, ChenYuan Bai, ZiNiu Wu   +5 more
openaire   +1 more source

The mechanisms of lift enhancement in insect flight

Naturwissenschaften, 2004
Recent studies have revealed a diverse array of fluid dynamic phenomena that enhance lift production during flapping insect flight. Physical and analytical models of oscillating wings have demonstrated that a prominent vortex attached to the wing's leading edge augments lift production throughout the translational parts of the stroke cycle, whereas ...
openaire   +2 more sources

Lifting Mechanism with Ribbon Brake

2018
The scheme of a typical lifting mechanism of the load lifting machine is considered. Its disadvantage due to the placement of the brake pulley on the coupling half located on the high-speed shaft of the reducer is indicated. This determines the rationality of installing the brake directly on the working mechanism of the lifting machine mechanism.
P. V. Vitchuk, V. Yu. Antsev, A. A. Obozov   +2 more
openaire   +1 more source

Numerical simulation of lifting mechanism

AIP Conference Proceedings, 2012
The article presents a method of kinematical synthesis of planar multilink linkage with adjustable closed loop, which is designed for a plane-parallel motion of the output lever and can be used as an actuator for lifting mechanism. Methods of kinematical synthesis and analysis are developed in this paper allow to design the scheme of mechanism that ...
E. S. Gebel, B. I. Zhursenbaev, V. Yu. Solomin   +2 more
openaire   +1 more source

Lifting mechanism structure features

Hoisting and transport equipment
The article deals with the study of the structure of a lifting device with a platform, designed on the basis of paired crank–slider mechanisms driven by hydraulic cylinders arranged parallel to the connecting rods. Within the scope of the stated objectives, a structural diagram was developed and a structural analysis of the mechanism was performed.
V. Protsenko, S. Rusanov, G. Shikarev
openaire   +1 more source

Back Support Mechanisms During Manual Lifting

Physical Therapy, 1989
The ability of individuals to lift heavy loads without injury to the vertebral elements has led to the formulation of several explanations of this phenomenon. In this article, the existing literature on lifting is reviewed and mechanisms of back support during lifting are described.
openaire   +2 more sources

Lifting Mechanism

2023
openaire   +1 more source

Analysis of the column of a mechanical lift excited by vehicle lifting

Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2023
openaire   +1 more source

Multi-field coupling multiple nonlinear vibration model and fatigue failure mechanism of deep-ocean mining hydraulic lifting pipe

Nonlinear Dynamics, 2023
Xiaoqiang Guo, Libin Zhao, Xinye Li
exaly  

Conceptional Design and Static Calculation of 1-DOF Lifting Platform Mechanism

Mechanisms and Machine Science, 2023
Shen Huiping, Huiping Shen
exaly