In 1899 this pair started their research with a biplane flown like a kite
... left at 
will, the brothers began to design their first full-scale glider using Lilienthal's data
... [DOC] [TLE] The Courage to Soar - NASA [PAR] Students use their research to construct a timeline of people and aircraft that 
contributed ...... who flew kites and how they used the kites to accomplish their 
goals.