Aerodynamics Optimization of a Ducted Coaxial Rotor in Forward Flight Using Orthogonal Test Design

Table 1

Forward flight aerodynamics factor-level form.

Factor level	Pitch angle (/°)		Flight velocity (/m·s^−1)		Rotor spacing (H/mm)
1	A1	85	B1	5	C1	38
2	A2	80	B2	10	C2	57
3	A3	75	B3	15	C3	66.5
4	A4	70	B4	20	C4	76