Dihedral aerodynamic structure

An aerodynamic structure having self-correcting flight properties;

• said aerodynamic structure comprising first and second corresponding planar sections connected at their roots to one another centrally of the aerodynamic structure by a springy hinging connection and moveable relative to one another through corresponding dihedral angles;
• each of said sections comprising:
• a forward wing, a body portion, and a rear empennage moveable in unison with one another and said sections being moveable from a widespread glide position to an essentially folded projectile position in response to dynamic pressures to substantially alter the equilibrium state and stability of the structure during flight.