Page "Kite control systems" Paragraph 14

: Of seven to eight experiments, Barry Hill Palmer found several control systems for foot-launch hang glider in 1960-1962.

He finally came upon what George A. Spratt already had found for aviation and any hang glider: triangle control frame or A-frame in front of pilot while pilot hung from a tether either in a seat or harness for various positions ; the mechanical arrangement precluded invention in later years for the same.

Many others would find the same mechanical arrangement for mass-shifting for Rogallo hang gliders and derivatives ; these free-flying manned kites or hang gliders used the wing for the kites from the Fleep or Paresev or derivatives of that branch of stiffened flexible wings.