Aerodynamic Characteristics of Helicopter with Ducted Fan Tail Rotor in Hover under Low-Speed Crosswind

Table 1

Specification of rotors.

	No. of blades	No. of airfoil	Rotor radius (m)	Solidity	Rotational speed (rpm)
Main rotor	5	3 (OAF2XX series)	6.301	0.0972	342	0.66
Tail rotor	10	5 (OAF3XX series)	0.546	0.548	3579	0.6