Answer:
16.495 m
Step-by-step explanation:
a = Centripetal acceleration = 5.5 g
r = Radius of turn
v = Velocity of fighter jet = 890 m/s
g = Acceleration due to gravity = 9.81 m/s²
The direction of the velocity vector keeps constantly changing in centripetal acceleration

The minimum radius of curvature that he can take without blacking out is 16.495 m