According to the Wright patent of 1906, how was an airplane defined?

The definition of an airplane in the context of the Wright patent of 1906 specified a "heavier-than-air, aerodynamic flying machine," which corresponds perfectly to the advancements made by the Wright brothers. This definition reflects the key characteristics that distinguish airplanes from other types of flying machines, such as lighter-than-air vehicles (like balloons) or rotary wing aircraft (like helicopters).

The emphasis on being "heavier-than-air" indicates that the aircraft must generate lift through its wings and not rely on buoyancy, which is a fundamental principle that supports the Wright brothers' innovations in powered flight. Moreover, the use of the term "aerodynamic" highlights the focus on the design and shape of the craft to optimize air flow and lift, which were crucial elements in achieving controlled flight and stability.

This definition laid a foundation for understanding what constitutes an airplane and distinguished it from other flying crafts, ensuring a clear technological and regulatory context for the aviation industry that followed.