You must often hear about two types of drones: multi rotor drone and fixed-wing drones. Today, I will lead you to understand the development process of multi rotor drone.

First of all, let me explain to you the definition of a multi-rotor UAV. Multi rotor drone refers to a special unmanned helicopter with three or more rotor shafts. In fact, in history, people's research on multi-rotor aircraft was relatively early. As early as 1907 in France, the Breguet brothers conducted a flight test of a rotor helicopter under the guidance of Professor Charles Richer, which is recorded in history. The earliest test flight experiment was on a rotor UAV, but because the preparations were not perfect at that time, and the design was not reasonable enough, the aircraft only raised 0.6 meters above the ground and stayed in the air for only one minute. The first test flight ended in failure. In the follow-up test flight, although the aircraft only flew to a height of 1.5 meters above the ground, it was indeed a leap forward for the historical process of human research on rotorcraft. With this start, a large number of engineers and scientists began conducting research on multi-rotor aircraft. In 1920, Etienne Oemichen, an engineer at Peugeot, began designing a multi-rotor aircraft. After many failures and repeated attempts, he finally realized the multi-rotor UAV take-off in 1923 , setting a world record in the helicopter field at that time. For the first time, the helicopter achieved a vertical flight of 1,000 meters for the first time, and extended the blanking time to 14 minutes. In the following years, after seeing the success of Etienne Oemichen, engineers from all over the world became more motivated to invest in the research of drones. In 1956, Marc Adman Kaplan designed the first true quadrotor, the Convertawings Model "A". The test flight was a great success. The aircraft weighed 1 ton, and the diameter of the propeller exceeded 19 feet. The aircraft relied on two 90-horsepower engines to enable the aircraft to hover and movement. In the following decades, due to the immature application of multi-rotor aircraft in the military, development was also limited, and the attention gained was also reduced a lot. Due to the gradual reduction of attention, the product concept of multi-rotor drones has gradually deviated from the application in the military field, and has gradually entered the market through remote control toys. In recent years, with the advancement of automatic control technology, micro-electromechanical technology, and the great development of the manufacturing industry, multi-rotor drones have finally ushered in their own spring in the market. In terms of academics, there are also more and more Scholars began to conduct research on multi-rotor drones.

After several years of research and deep cultivation in the field of drones by major engineers and scholars, multi-rotor drones have also begun to develop rapidly in different fields. I believe that in the future, drones will still penetrate into human work. And all aspects of life, I believe that after so many years of development, the multi rotor drone field will have a brighter future.