World Library  
Flag as Inappropriate
Email this Article

Stall strips

Article Id: WHEBN0001853020
Reproduction Date:

Title: Stall strips  
Author: World Heritage Encyclopedia
Language: English
Subject: Leading edge, Liberty XL2, Gust lock, Wingbox, Passenger service unit
Collection: Aircraft Wing Components
Publisher: World Heritage Encyclopedia

Stall strips

A stall strip factory installed on an American Aviation AA-1 Yankee

A stall strip is a fixed aerodynamic device employed on fixed-wing aircraft to modify the airfoil used.[1] They are usually factory-installed or, on rarer occasion, an after-market modification. Stall strips are almost always employed in pairs, symmetrically on both wings. In rare installations they are employed as a single strip on one wing to correct aberrant stall behaviour.


The CL-215 features a stall strip on the right wing only, ensuring both wings stall at the same angle of attack despite the propeller wash.

A stall strip alters the wing’s stall characteristics and ensures that the wing root stalls before the wing tips. This is usually as a result of initial aircraft flight testing which shows that the existing stall characteristics are unacceptable for certification.[1]

In some cases, such as the American Aviation AA-1 Yankee, stall strips are planned to be used on the wing from the start. In the case of the AA-1 the left and right wings were identical, interchangeable and built on a single wing jig, thus the more traditional use of washout in the wing design was not possible.

Stall strips can be an alternative to washout in aircraft design or they can be used as well as washout to improve stall performance.

Stall strips typically consist of a small piece of material, usually aluminium, triangular in cross section and often 6-12 inches (15–30 cm) in length. It is riveted or bonded on the point of the wing’s leading edge, usually at the wing root. Here it acts to trip the boundary layer air flow at higher angles of attack, causing turbulent flow and air flow separation. This has the effect of causing the wing root to stall before the outer portions of the wing, ensuring a progressive outward stall, minimizing the risk of spinning and giving maximum aileron control throughout the stall.[1]

See also


  1. ^ a b c Crane, Dale: Dictionary of Aeronautical Terms, third edition, page 487. Aviation Supplies & Academics, 1997. ISBN 1-56027-287-2
  • Stall Origins and Performance, Whittsflying website - accessed 09 March 2008
  • Stall Strips - accessed 23 August 2006
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.