Lecture 17 (Emily) Flashcards
1
Q
What do euler angles do?
A
measure the orientation on one frame to another using 3x3 matrices
2
Q
As its a fixed frame which order do you times the matrices by eachother
A
opposite way round 3 then 2 then 1
3
Q
What is the problem with Euler angles?
A
Singularities cause gimble lock where a degree of freedom is lost
4
Q
How to get through gimble lock without using quaternions
A
Extra gimbles, reset device
5
Q
What is the formula of quaternions
A
xi+jk+zk +q0
6
Q
simplifications of moment of inertia for a aircraft
A
symmetric so Ixy=0 iyx=0 iyz= izy-=0
7
Q
What is moment of intertia
A
how much something resists rotation
8
Q
A
9
Q
Where are quaternions used
A
to describe the rotation of an aircraft from a base reference point
