Félix du Temple patented the designs for his aerial machine in 1857, which incorporated a retractable wheel landing gear, a propeller, a 6 hp engine and a dihedral wing design, under the title "Locomotion aérienne par imitation du vol des oiseaux" ("Aerial locomotion by imitation of the flight of birds").
Félix du Temple patented the designs for his aerial machine in 1857, which featured a retractable wheel landing gear, a propeller, a 6 hp engine and a wing design that mimicked bird flight, under the title "Aerial locomotion by imitation of bird flight".