The Center for Complex Integration of Technologies (CCIT) of the Central Aerohydrodynamic Institute is conducting research on aircraft designs for local airlines as part of the MANGo research work aimed at creating a scientific and technical backlog. Propellers for such aircrafts are developed by specialists of the aerodynamics department of the Institute’s power plants.
Earlier, an aerodynamic layout of a six-bladed propeller was created on the basis of aerodynamic profiles for marching propulsion systems of prospective turboprop airplanes with a capacity of 9-19 passengers, the press service of TsAGI reported.
The peculiarity of the developed project is its initial linkage with the characteristics of the prospective engine and the parameters of single- and twin-engine aircraft of local airlines, developed under the requirements of ensuring a flight speed of 400-450 km/h, the range with a maximum number of passengers 1400-1500 km and the length of the runway 650 meters.
TsAGI notes that such an innovative approach already at the early stages of designing the parameters of the “airplane – engine – propeller” system can ensure high fuel efficiency of the aircraft while meeting conflicting requirements for speed, range and runway length.
“In addition, it will be possible to unify the propulsion systems for the 9- and 19-seat aircraft. This will increase their serialization, reduce the cost of production and operation,” believes Andrei Dunayevsky, head of programs for the implementation of scientific projects of general aviation and aeronautical engineering.
For the stage of full-scale studies was designed and manufactured model of the propeller, during experimental blowing which in one of the wind tunnels of the Institute, experts determined the thrust and power coefficients, as well as the coefficient of performance (COP) at cruising flight modes at Mach numbers 0.36-0.4. “The results obtained will be used to clarify the flight characteristics of aircraft,” explained in TsAGI.
According to the results of the experiment, it was confirmed that the designed propeller has a high efficiency – about 90%, which guarantees the efficiency of engine energy utilization and the economy of the aircraft as a whole.
The next stage of research will be tests in a large wind tunnel of low speeds to determine the aerodynamic characteristics at takeoff and landing modes.
