Developing a new direction of the technical progress in the area of theory and design of air screws connected with introducing in zone H-B <sub>2</sub> sine character of gas flow axial speed and acceleration changing
The new direction of the technical progress in the area of theory and design of air screws according to the patent of Ukraine № 26883, which allows to increase C <sub>a</sub>, U, CUA, П <sub>к</sub> <sup>*</sup> in the zone B <sub>2</sub>-K, thrust, flying altitude, to lower decibel characteristics and fuel consumption.