Keywords: Lavezzari1904tcf.jpg In 1904 in France Lavezzari integrated partial control of a hang glider for very short flights by just hanging onto the basebar of a triangle control frame TCF that was integrated with the spar and split keel; he chose not to use a seat for such short flights Own 2008-02-08 Joefaust public domain all uses Kite diagrams Jan Lavezarri |