Study on Helicopter Antitorque Device Based on Cross-Flow Fan Technology

Table 2

Definitions of geometric parameters.

Definition	Value
Opening angle (°)	90, 110, 130, 150
Outer radius of CFF (mm)	100
Fan outlet height (mm)	45
Blade mounting angle (°)	0, 10, 20, 30
Blade chord (mm)	25
Number of blades (piece)	10, 12, 14, 16
Blade length (mm)	500
Clearance between CFF and shell (mm)	5