avia.wikisort.org - Design

A stall strip is a small component fixed to the leading edge of the wing of an airplane to modify its aerodynamic characteristics.[1] These stall strips may be necessary for the airplane to comply with type certification requirements.

A stall strip typically consists 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 to the wing’s leading edge. Some airplanes have one stall strip on each wing. Some airplanes have only one stall strip on one wing.

Operation

A stall strip initiates flow separation on a region of the upper surface of the wing during flight at high angle of attack. This is typically to avoid a tendency to spin following a stall, or to improve the controllability of the airplane as it approaches the stall. A stall strip may be intended to alter the wing’s stall characteristics and ensure that the wing root stalls before the wing tips.[1]

In some cases, such as the American Aviation AA-1 Yankee, both wings are designed to incorporate stall strips. 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.[2]

Stall strips are usually factory-installed but, on rarer occasions, may be an after-market modification.

See also

Wikimedia Commons has media related to Stall strips.

• Stall warning and safety devices

References

External links

• Stall Origins and Performance, Whittsflying website - accessed 09 March 2008
• T-18.net Stall Strips - accessed 23 August 2006

На других языках

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- [en] Stall strips

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[fr] Bandes de décrochage

Les bandes de décrochage (désignées en anglais : « stall strips ») sont un système aérodynamique employé sur les aéronefs à voilure fixe pour modifier leurs caractéristiques de décrochage.

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[it] Stall strip

Gli Stall strips, sono dispositivi fissati sul bordo d'attacco dei velivoli ad ala fissa per modificare le caratteristiche aerodinamiche del profilo alare. Lo scopo principale è quello di avviare la separazione del flusso in determinati punti dell'ala durante il volo in caso di alto angolo di attacco, in modo tale da migliorare la controllabilità del velivolo quando entra in stallo. Sono normalmente installati in coppie, simmetricamente su entrambe le ali.

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