# Flettner rotor

> English word · Noun

## Definitions
1. A smooth cylinder with disc end-plates which is spun along its long axis and, as air passes at right angles across it, the Magnus effect causes an aerodynamic force to be generated in the direction perpendicular to both the long axis and the direction of air flow.

## Etymology
Named after German aviation engineer and inventor Anton Flettner.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/flettner-rotor