# Question: the lateraldirectional characteristic equation for an airplane gave the following...

###### Question details

The lateral-directional characteristic equation for an airplane
gave the following set of roots : λ_{1} = -0.55,
λ_{2} = -0.0034, λ_{3,4} = -0.06 ± 1.8
** i**. In how much time any disturbance in
roll would decay to 25% of its original value? (Give answer correct
to 2 decimal places)

The lateral-directional characteristic equation for an airplane gave the following set of roots : λ

_{1}= -0.625, λ

_{2}= -0.0041, λ

_{3,4}= -0.08 ± 1.2 i. In how many seconds, any disturbance in spiral mode would decay to 10% of its original value?