Flying object

A kite, consisting essentially of a wind-bearing surface having a pair of opposite articulate planar sections meeting at a common edge and relatively movable thereabout to change the spacing between said planar surface sections in response to wind bearing against said planar surface sections, said planar surface sections comprising a sheet-like member for bearing wind in flight, and a pair of rigid symmetrical triangular frames, having a common side defining the central axis of the kite, symmetrical about the common side and having said sheet-like member mounted thereon for maintaining said sheet-like member planar while subject to wind pressure in flight;

• a line attached at a point along said common edge for restraining the kite when it is in flight;
• and an elastic spacer spanning between said planar surface sections for setting the spacing therebetween, wherein said elastic spacer consists essentially of a single elongate elastic element having a pair of opposite ends each attached to a respective one of said triangular frames and has a spring constant such that the product of said spring constant and a distance from the point of attachment of said line to a point of attachment of said elastic spacer to one of said triangular frames is greater than five times the weight of the kite, and said elastic spacer is shaped embowed away from said triangular frames when it is in an unstressed condition corresponding to no wind pressure being applied to said pair of planar sections.