Spanish translation: ala de flecha progresiva/invertida/negativa
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Explanation: It's the type of wings now tested in experimental planes like the figther XF-22, instead of extending to the rear, they extend to the front, [inversely to the normal design]. Probably, in the near future, all new designs for military planes will adopt this pattern.
Jane's Military Aircraft Encyclopedia.
Ivan Sanchez Local time: 03:08 Native speaker of: English PRO pts in pair: 731