He built a quadrocopter and calculated the trajectory of flight to the moon: 133 years since the birth of George Botezat

Georgy Botezat was an electrical engineer by training, he graduated from institutes in Kharkov and Belgium (Belgium). One of his main inventions is a helicopter with several screws. A four-screw circuit simplified the control, turning the device by changing the position of the bow blades.
Funds for the creation of a helicopter were given to the inventor by the US Army. The task of Botezat was to make an aircraft with vertical take-off and landing. The $ 200,000 issued was not enough for prototypes, so Botezat immediately built a full-size device.
The device first flew in 1922. In one of the experimental flights, he lifted a cargo weighing 450 kg to a height of 4 meters. In 1922 and 1923, this first U.S. Air Force helicopter made 100 flights.
Technical characteristics of the first quadrocopter :
Control: 1 pilot
Payload: up to four passengers
Dimensions length / width / height: 20 x 20 x 3 meters
Weight: 1633 kg
Engine:1 Le Rhone rotary engine with 180 horsepower
maximum speed: 48 km / h
Working height: 5 m
Maximum height: 9.1 m

The US government has stopped funding the Botesat project, preferring gyros. The inventor in 1926 founded a company for the production of fans and began to supply them for installation in industrial and residential buildings and the US Navy - for new cruisers.

Another work of Botezat was special effects for the film "The Love of Sunya".

Individual aircraft with a gasoline engine for the military.

In 1938, George Botezat with pilot Boris Sergievsky founded Helicopter Corp. of America. The company's first helicopter was the GB-2. A modified version of the device called GB-5 was the last of the inventor's helicopters. The helicopter could not rise above one and a half meters and crashed on one of the tests.
George Botezat died in 1940 at the age of 57 years.
