Answer :
Final answer:
The Wright Brothers connected the propellers to the engine using bicycle chains on their aircraft during their first powered flight on December 17, 1903, in Kitty Hawk, North Carolina.
Explanation:
The Wright Brothers connected the propellers to the engine with bicycle chains. This connection was crucial in their successful attempt at powered flight. Their background running a bicycle shop in Dayton, Ohio, provided them not only with financial support but also the mechanical experience required to innovate in the field of aviation. By applying the principles of transmitting a force, which they were familiar with from bicycles, wherein a chain transmits a force from the crankset to the rear wheel, they could successfully transfer the engine's power to the propellers of the aircraft.
Their first successful powered flight was on December 17, 1903, in Kitty Hawk, North Carolina. They made four flights that day, with the longest being over 850 feet. This historical achievement was the result of years of experimentation and the application of scientific theory. Their understanding of control structures and mechanical linkages, such as the ones developed earlier by pioneers like Watt and Peaucellier, heavily influenced the development of the innovative technology used in their aircraft.