This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Wing twist" – news · newspapers · books · scholar · JSTOR(January 2022) (Learn how and when to remove this message)
Wing twist is an aerodynamic feature added to aircraft wings to adjust lift distribution along the wing.
Often, the purpose of lift redistribution is to ensure that the wing tip is the last part of the wing surface to stall, for example when executing a roll or steep climb; it involves twisting the wingtip a small amount downwards in relation to the rest of the wing. This ensures that the effective angle of attack is always lower at the wingtip than at the root, meaning the root will stall before the tip. This is desirable because the aircraft's flight control surfaces are often located at the wingtip, and the variable stall characteristics of a twisted wing alert the pilot to the advancing stall while still allowing the control surfaces to remain effective, meaning the pilot can usually prevent the aircraft from stalling fully before control is completely lost.
Twist that decreases the local chord's incidence from root to tip is sometimes referred to as washout. Twist that increases the local incidence from root to tip is less common and is called wash-in. The Grumman X-29 had strong wash-in to compensate for the additional root-first stalling promoted by the forward sweep.[citation needed]
Wing twist can also, rarely, refer to the deflection of the wing when it is made of insufficiently stiff materials; actuation of the flaps can, instead of deflecting air as intended, cause the wing itself to be deflected and is related to compressibility effects; this problem has mostly been eradicated however, with modern high-strength alloys and composites.
Wing twist is also observed in insects.[1]
^Zheng, Lingxiao; Hedrick, Tyson L.; Mittal, Rajat (16 January 2013). "Time-Varying Wing-Twist Improves Aerodynamic Efficiency of Forward Flight in Butterflies". PLOS ONE. 8 (1): e53060. Bibcode:2013PLoSO...853060Z. doi:10.1371/journal.pone.0053060. PMC 3547021. PMID 23341923.
Wingtwist is an aerodynamic feature added to aircraft wings to adjust lift distribution along the wing. Often, the purpose of lift redistribution is...
the amount of airflow over the wing becomes so great that the force generated by the ailerons is enough to twist the wing itself, due to insufficient torsional...
Look up twist or twisting in Wiktionary, the free dictionary. Twist may refer to: Twist (2003 film), a 2003 independent film loosely based on Charles...
the wing chord to the power of 1.0, indicates a consistent wingtwist and camber regardless of body or wing size, suggesting adjustments in wing stiffness...
noteworthy trait is wingtwist. Most insect wings are twisted, as are helicopter blades, with a higher angle of attack at the base. The twist generally is between...
birds, such as geese and ducks, in which the last joint of the wing is twisted with the wing feathers pointing out laterally, instead of lying against the...
incorporating a strengthened airframe structure and a 1.5° increase in wingtwist. Airbus also offered, as an option, an improved maximum take-off weight...
airspeed, roughly 65% of aileron effectiveness was lost due to wingtwist. The new wing of the Spitfire F Mk 21 and its successors was designed to help...
Anthony Rory Twist (born May 9, 1968) is a Canadian former professional ice hockey player. He played left wing in the NHL for the St. Louis Blues and...
operators already using A330s. Aerodynamic modifications would include a re-twistedwing and optimised slats. In 2014, The Airline Monitor's Ed Greenslet stated...
Boeing: Randy's Journal: Father knows best, a blog entry tributed to Joe Sutter The Sutter twist – an engineering story, a Wingtwist named after him...
toward the trailing edge and reduces twist thus making the sail more powerful but vulnerable to stalling. Wingtwist Garrett, Ross (1996). The Symmetry...
(185–259 km; 115–161 mi) extra range and reduce fuel burn by 1.4–1.6%. The wingtwist is being changed for the wider, optimised spanload pressure distribution...
The West Wing is an American serial political drama television series created by Aaron Sorkin that was originally broadcast on NBC from September 22, 1999...
in situations where aileron action would produce excessive wingtwist on a very flexible wing or if wide-span flaps prevent adequate aileron roll control...
a swept wing is stable in straight flight, it still experiences adverse yaw during a turn. One solution is to give the wing sufficient twist for the outer...
2020). "The LG Wing'stwisting screen offers a new spin on the dual-screen smartphone". The Verge. Boxall, Andy (September 14, 2020). "LG Wing smartphone...
2017). "RIGHT AT HOME: Traditional wing chairs with modern twist". AP News. Retrieved 20 September 2019. Look up wing chair in Wiktionary, the free dictionary...
torsion of the tips of the wings. If the rear edge of the right wing tip is twisted upward and the left downward the bird becomes an animated windmill...