The secondary structures, which support aerodynamic fairings or skins, flight control surfaces and control mechanisms, consist of the leading edge, trailing edge, and wingtip.

次要结构由机翼前缘，后缘和翼尖构成，主要用来减小空气阻力，支撑蒙皮，协助飞行操纵面和操纵机构。

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Each side of Demon's delta wing has one row of these slots in the upper part of its trailing edge and another on the lower part.

ECONOMIST: How to fly without ailerons

Philip John, the technical director of the project, says the version used on Demon has the compressed air entering a single chamber within a wing's trailing edge.

ECONOMIST: How to fly without ailerons

When one row on one side blows air at a higher pressure than the other it causes the airflow over the trailing edge on that side to bend up or down, in exactly the way that an aileron would, and the plane rolls accordingly.

ECONOMIST: How to fly without ailerons