Results 91 to 100 of about 6,838,442 (240)

On the Theory of Screw Propellers

open access: yesJournal of Zosen Kiokai, 1956
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 ...
openaire   +4 more sources

The theory of the screw propeller [PDF]

open access: yes
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
core   +1 more source

Possible origins of macroscopic left-right asymmetry in organisms

open access: yes, 2012
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
core   +1 more source

External Inversion, Internal Inversion, and Reflection Invariance

open access: yes, 2001
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
core   +1 more source

On the vortex theory of screw propellers [PDF]

open access: yesProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1929
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 ...
openaire   +1 more source

Kinematic calibration and accuracy compensation method for embodied intelligent disinfection robot

open access: yes智能科学与技术学报
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

open access: yes, 2014
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
core   +1 more source

Atomistically enabled nonsingular anisotropic elastic representation of near-core dislocation stress fields in $\alpha$-iron

open access: yes, 2015
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
core   +1 more source

Inverse Kinematics of China Space Station Experimental Module Manipulator

open access: yesMachines
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
doaj   +1 more source

Type Synthesis of 2T1R Decoupled Parallel Mechanisms Based on Lie Groups and Screw Theory

open access: yes, 2017
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

Home - About - Disclaimer - Privacy