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Two surfaces, not a bird
Lumen · High school
Chanute: add a second surface, then truss it. Lilienthal flew two thousand times and died of a wobbly joint. Equilibrium before a motor.
Student age
10years · 5th grade
Lumen · High school
Chanute: add a second surface, then truss it. Lilienthal flew two thousand times and died of a wobbly joint. Equilibrium before a motor.
Student age
10years · 5th grade