Aeroelastic behaviour of the inverted jet spoilers

Aerodynamic and structural analyses on the inverted jet spoiler highlighted not only the low possibility of damaging or fracturing the material, but also the high probability of aeroelastic vibration occurrence because of the device large deformation due to the low stiffness of the spoiler panel. It was demonstrated that spoiler stiffness increases by implementing stiffer materials, shortening the chord-wise length, thickening the panel and lengthening the span-wise dimension.