Cayley made several important contributions to aviation. He was the first person to understand that an airplane needs three main parts: lift, drag, and thrust! 🚀
Lift is what makes the airplane go up, drag slows it down, and thrust helps push it forward. In 1799, he built a small glider and tested it with a coachman, proving that heavier-than-air flights were possible. This was a big deal! His ideas laid the foundation for future flying machines.