Octave Chanute, a French - born American engineer, elaborated on Lilienthal’s design and developed a double - winged glider that again represented a significant advance in the design of a heavier - than - air flying machine.
यह भी हवा - से - भारी हवाई जहाज़ के डिज़ाइन में भारी प्रगति का प्रतीक था ।