Editing Delta wing (section)

===Tailed delta===
A conventional tail stabiliser allows the main wing to be optimised for lift and therefore to be smaller and more highly loaded. Development of aircraft equipped with this configuration can be traced back to the late 1940s.<ref>Allward 1983, pp. 11–12.</ref>

When used with a T-tail, as in the [[Gloster Javelin]], like other wings a delta wing can give rise to a "[[deep stall]]" in which the high angle of attack at the stall causes the turbulent wake of the stalled wing to envelope the tail. This makes the elevator ineffective and the airplane cannot recover from the stall.<ref>{{Citation | url = http://www.thunder-and-lightnings.co.uk/javelin/history.php | title = Gloster Javelin History | publisher = Thunder & Lightnings | date = 4 April 2012 | place = UK | access-date = 10 February 2011 | archive-date = 9 June 2011 | archive-url = https://web.archive.org/web/20110609224809/http://www.thunder-and-lightnings.co.uk/javelin/history.php | url-status = live }}.</ref> In the case of the Javelin, a [[Stall (fluid dynamics)#Warning and safety devices|stall warning device]] was developed and implemented for the Javelin following the early loss of an aircraft to such conditions.<ref name ="pat 6">Patridge 1967, p. 6.</ref> Gloster's design team had reportedly opted to use a tailed delta configuration out of necessity, seeking to achieve effective manoeuvrability at relatively high speeds for the era while also requiring suitable controllability when being flown at the slower landing speeds desired.<ref>Patridge 1967, pp. 3–4.</ref>