Step-by-step explanation:
- The Model D was the first commercially successful aircraft built by Curtiss.
- It was a biplane, meaning it had two wings stacked on top of each other.
- The first Model D was flown in 1911.
- It had a maximum speed of 60 mph and a range of about 75 miles.
- It was used for a variety of purposes, including racing, stunt flying, and carrying passengers.
The Model D was a groundbreaking aircraft that helped to pave the way for the future of aviation. It was a popular choice among