Abstract. For unmanned aircraft for transportation purposes, the key issue is the choice of characteristics of lifting thrusters, which should have sufficient efficiency at limited dimensions. In this paper, the methodology of numerical modeling of propeller-ring thrusters, propellers rotating in a ring, is sequentially considered. The characteristics of propellers with propellers differing in the number of blades, geometric twist of blades, degree of coverage of the area swept by the propeller and blade length are studied. Dependences of thrust and power coefficients, as well as propulsion efficiency values for a wide range of rotational speeds and engine power supplied to the propellers are obtained. The issue of propulsor optimization is considered separately. The results are compared with TsAGI reference experimental data.

Keywords: propeller-ring propulsion, propeller, blade, unmanned aerial vehicle, optimization, numerical modeling

For citation: Bulat P. V., Chernyshov P. S., Melnikova A. I. Results of the design methodology development for a range of propeller-ring propulsors with moderate and high power load per area for unmanned aircraft of transport purpose. Aerospace Engineering and Technology. 2024. Vol. 2, no. 3, pp. 125–151. DOI 10.52467/2949-401X-2024-2-3-125-151. EDN KNXXZJ (In Russian)