A New Mathematical Modeling Method for Four-Stage Helicopter Main Gearbox and Dynamic Response Optimization

Table 4

Parameter optimization of the hollow shaft.

Parameter	Original group	Improved group	Optimization effect
	0.75	0.6	N/A
	0.8	0.6	N/A
	0.75	0.9	N/A
	1.4	1.8	N/A
	0.0262	0.0171	−34.7%
	0.0343	0.0219	−36.1%