swirl error

swirl error

[′swərl ‚er·ər]
(navigation)
The additional error in the reading of a magnetic compass during a turn due to friction in the compass liquid.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Chordal paths must also be specially configured in order to minimize crossflow and swirl errors. Pairs of paths should be mounted in opposition in order to achieve some cancellation of crossflow.