Classification and Control of Key Factors Affecting the Failure of Aviation Piston Turbocharger Systems Using Model-Based System Safety Analysis

Table 5

Probability distribution characteristics and related parameters of influencing factors (normalized).

Influencing factor	Distribution type	Expectation	Variance
Throttle position,	Normal distribution	1	0.5
Diameter of the wastegate,	Normal distribution	2	0.5
Altitude,	Normal distribution	0.6	0.3
Rotational speed of the engine,	Normal distribution	0.6	0.3
Diameter of the exhaust pipe,	Normal distribution	2	0.5