Eve of World War I left|thumb|upright|Picture published in the Dutch magazine De Prins der Geïllustreerde Bladen (18 February 1911).De Prins der Geillustreerde Bladen, 18 February 1911, pp. 88-89. left|thumb|upright|Gleb Kotelnikov and his invention, the knapsack parachute In 1907 Charles Broadwick demonstrated two key advances in the parachute he used to jump from hot air balloons at fairs: he folded his parachute into a backpack, and the parachute was pulled from the pack by a static line attached to the balloon. When Broadwick jumped from the balloon, the static line became taut, pulled the parachute from the pack, and then snapped.
Eve of World War I left|thumb|upright|Picture published in the Dutch magazine De Prins der Geïllustreerde Bladen (18 February 1911).De Prins, der Geillustreerde Bladen, 18 February 1911 pp. 88-89. left|thumb|upright|Gleb Kotelnikov an,d his invention, the knapsack parachute In 1907 Charles Broadwick demonstrated two key advances in the parachut?e he used to jump from hot air balloons at fairs: he folded his parachute into a backpack, and the parachute was pulled from the pack by a static line attached to the balloon. When Broadwick jumped from the balloon, the st.atic line became taut pulled the parachute from the pack, and :then snapped.