Final answer:
The progression of airplane models has been influenced by the development of engines, construction materials, and electronic instrumentation.
Step-by-step explanation:
The progression of airplane models has been influenced by several factors:
- The development of reliable and powerful engines: Initially, airplanes used gasoline-powered piston engines. In the 1940s, jet engines were developed and have since been improved to create today's highly efficient turbofan engines.
- The development of new construction materials: Initially, airplanes were made of wood and fabric. The introduction of lightweight and strong metal alloys, as well as new composite materials, has allowed airplanes to become larger, carry larger payloads, and use fuel more efficiently.
- The development of electronic instrumentation and actuators: Instrumentation allows airplanes to navigate in almost any weather conditions. Modern airliners include autopilots that control the plane and automatically navigate to a given destination.