Results 241 to 250 of about 255,519 (292)

The Ship Screw

1984
Our next subject will be the ship screw which is upto now the most important device for hydrodynamic propulsion. It consists of a number of helicoidally shaped blades connected to a hub. The number of blades can vary from two upto about six. The hub is mounted on a shaft (figure 3.1) which is rotated by the engine.
openaire   +1 more source

Screw Polygons, Finite Screws, and Biquaternions

Volume 1B: 25th Biennial Mechanisms Conference, 1998
Abstract In this contribution, the close relationship between screw polygons, finite screws, and biquaternions is elucidated. Further, it is shown that a reinterpretation of screw polygon problems in terms of biquaternions leads to a simple and straightforward solution of the direct problem of screw polygons.
José María Rico M., Victor Gallegos J., Joseph Duffy   +2 more
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The Nut in Screw Theory

Journal of Robotic Systems, 2003
AbstractThis study in projective geometry reveals that the principle of duality applies to the screw. Here, the screw is demonstrated to be an element of a projective three‐dimensional space (P3), right alongside the line. Dual elements for the screw and line are also revealed (the nut and spline).
Michael Griffis, José María Rico Martínez   +1 more
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Investigation of labyrinth-screw and screw seals

Chemical and Petroleum Engineering, 1985
also the optimum flow rate of the cooling liquid (90-120 liter/h for seals with unified friction rings of siliconized graphite SG-P). The investigations showed that with the given design of the seal, heat removal is efficient and its operation stable.
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Cannulated Screws

The Journal of Foot and Ankle Surgery, 2019
Brian Carpenter, Donald Bohay, John S. Early, Meagan Jennings, Gregory Pomeroy, John M. Schuberth, Dane K. Wukich   +6 more
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Robotic and Navigated Pedicle Screws Are Safer and More Accurate Than Fluoroscopic Freehand Screws: A Systematic Review and Meta-Analysis

Spine Journal, 2023
Abhijith V Matur, Owoicho Adogwa, Joseph Cheng   +2 more
exaly  

Biomechanical Design and Analysis of Auxetic Pedicle Screw to Resist Loosening

Computers in Biology and Medicine, 2021
Yubo Fan, Lizhen Wang
exaly  

BONE-SCREW AND BONE-SCREW SCREW-DRIVER

JAMA: The Journal of the American Medical Association, 1920
openaire   +1 more source

A Review of Static and Dynamic Analysis of Ball Screw Feed Drives, Recirculating Linear Guideway, and Ball Screw

International Journal of Machine Tools and Manufacture, 2023
Li Changyou, Mengtao Xu, Hongzhuang Zhang   +2 more
exaly  

Additive Manufacturing of Biodegradable Porous Orthopaedic Screw

Bioactive Materials, 2020
Anuradha Subramanian, Swaminathan Sethuraman, Vishal Kannan   +2 more
exaly