Momentum theory
id:
momentum-theory-288-2321147
title:
Momentum theory
text:
In fluid dynamics, momentum theory or disk actuator theory is a theory describing a mathematical model of an ideal actuator disk, such as a propeller or helicopter rotor, by W.J.M. Rankine (1865), Alfred George Greenhill (1888) and Robert Edmund Froude (1889). The rotor is modeled as an infinitely thin disc, inducing a constant velocity along the axis of rotation. The basic state of a helicopter is hovering. This disc creates a flow around the rotor. Under certain mathematical premises of the fl
brand slug:
wiki
category slug:
encyclopedia
description:
Mathematical model in fluid dynamics
original url:
https://en.wikipedia.org/wiki/Momentum_theory
date created:
date modified:
2024-02-10T01:16:34Z
main entity:
{"identifier":"Q1855073","url":"https://www.wikidata.org/entity/Q1855073"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/5/56/Actuator_disk.svg","width":400,"height":470}
fields total:
13
integrity:
15