Results 91 to 100 of about 6,838,442 (240)
On the Theory of Screw Propellers
The author who stated the outline of the theory of free-running screw propellers in his previous paper (the Journal of the Society of Naval Architects of Japan.No. 100, p. 15) calculated the characteristics of the practical propellers and proved that the theoretical values agree nearly with the experimental results, and suggested a method of design of ...
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The theory of the screw propeller [PDF]
Given here is a brief review of the fundamental principles of the propeller slip-stream theory and its further development through later researches, which demonstrate the connection between the propeller slip-stream theory and Frounde's so-called ...
Betz, A
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Possible origins of macroscopic left-right asymmetry in organisms
I consider the microscopic mechanisms by which a particular left-right (L/R) asymmetry is generated at the organism level from the microscopic handedness of cytoskeletal molecules.
A. Tamada +100 more
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External Inversion, Internal Inversion, and Reflection Invariance
Having in mind that physical systems have different levels of structure we develop the concept of external, internal and total improper Lorentz transformation (space inversion and time reversal).
A. Salam +4 more
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On the vortex theory of screw propellers [PDF]
The vortex-theory of screw propellers develops along similar lines to aerofoil theory. There is circulation of flow round each blade; this circulation vanishes at the tip and the root. The blade may be replaced by a bound vortex system, which, for the sake of simplicity, may be taken, as a first approximation, to be a bound vortex line ...
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Kinematic calibration and accuracy compensation method for embodied intelligent disinfection robot
Improving the positioning accuracy and real-time performance of disinfection robots are important prerequisites for achieving embodied intelligence, which is crucial to achieve a high sterilization rate of pathogenic microorganism, and can provide a ...
CHENG Jun +3 more
doaj
Elastic and plastic effects on heterogeneous nucleation and nanowire formation
We investigate theoretically the effects of elastic and plastic deformations on heterogeneous nucleation and nanowire formation. In the first case, the influence of the confinement of the critical nucleus between two parallel misfitting substrates is ...
Boussinot, G. +4 more
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The stress fields of dislocations predicted by classical elasticity are known to be unrealistically large approaching the dislocation core, due to the singular nature of the theory.
Elsaesser, Christian +5 more
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Inverse Kinematics of China Space Station Experimental Module Manipulator
SSRMS refers to a Space Station Remote Manipulator System. The robotic arm of the Wentian module can complete tasks such as supporting astronauts’ extravehicular activities, installing and maintaining payloads, and inspecting the space station. The seven-
Yang Liu +9 more
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Type Synthesis of 2T1R Decoupled Parallel Mechanisms Based on Lie Groups and Screw Theory
Decoupled parallel mechanisms (DPMs) have the characteristics of compact structure and simple control with wide applications. This paper presents a new method of type synthesis for DPMs by virtue of Lie groups and screw theory.
Shuwei Qu, Ruiqin Li, S. Bai
semanticscholar +1 more source

