Lecture 11 Flashcards
1
Q
Definition of damping ratio
A
Time for one cycle/total time oscillation subsides
2
Q
what does natural frequency characterise
A
how responsive the aircraft is
3
Q
Phugoid describe time
A
slow motion, long period
4
Q
Phugoid does angle of attack change
A
no
a little bit but its significant
5
Q
short period oscillations time describe
A
10 times faster then phugoid
6
Q
short period oscillations describe
A
oscillations about the aircrafts CG
7
Q
What are pilot induced oscillations? what could they be caused by
A
pilot overcorrecting themselves, could be caused by long delay between input and output
8
Q
Phugoid does speed change
A
yes
9
Q
Short period does AoA change
A
yes
10
Q
short period does speed change
A
no
11
Q
Can short period oscillations be unstable
A
no
12
Q
can phugoid be unstable
A
yes
