What kind of toy is the principle of helicopter similar to?

The principle of helicopter is similar to that of bamboo dragonfly.

The improved version of the shared helicopter refers to the production version of its two-seat electric vertical takeoff and landing (VTOL) "air taxi" recently disclosed by German startup E-volo. This aircraft model Volocopter2X is an improved version of its VC200 prototype and is currently undergoing flight test. Improvements include a battery pack that can be replaced in a few minutes.

E-volo plans to carry out model certification for ultra-light aircraft classified by Volocopter2X according to the "multi-rotor helicopter" created by Germany before 20 18. This will allow you to fly this telex plane with a sports pilot's license. Once the certification is successful, the company plans to start production for the German air sports market, and the aircraft is also planned to be used as a verification machine for the future urban air transport system. E-volo said that the first specially approved Volocopter2X aircraft will be tried out as a "flying taxi" before 20 18.

General classification of helicopters

Single rotor type: single rotor with ducted fan, the horizontal rotor is responsible for providing lift, and the small vertical rotor (tail rotor) at the tail is responsible for offsetting the reaction torque generated by the rotor, such as EC- 135 helicopter manufactured by Eurocopter; NOTAR (single-rotor tailless rotor) horizontal rotor is responsible for providing lift, and air is discharged from the tail side of the fuselage, which interacts with the downwash airflow of the rotor to generate lateral force to offset the reaction torque generated by the rotor.

Double-rotor type: tandem type: two rotors are arranged longitudinally in front and back, and the rotation directions are opposite. For example, the CH-47 Chinook transport helicopter manufactured by Boeing Company of the United States; The transverse two rotors are horizontally arranged left and right, and the rotor shafts are far apart and rotate in opposite directions. For example, the Mi-12 helicopter developed by the Miri Design Bureau of the Soviet Union.