What is this class going to cover?

There are three main sections.

After a brief introductory stuff about vectors and notations and so

forth really to the three primary topics are going to be rigid body, kinematics,

rigid body kinetics, and control.

So what do these words actually mean?

Kinematics is the description of motion.

So that means if you go to rigid body which I've got my little foam cube here.

Foam is always good when professors throws things around and when we drop him.

So for what this means is, rigid body kinematics,

we're describing the orientation, how do we now point space craft to point at

a particular star and to look down and point at a Earth location and

doing science I need to scan certain part of the atmosphere.

How do we describe such motions and we've translation there is infinity of ways that

you can describe your position relative to somebody else, there is distant and

a heading that you can use like asthma elevation and direction but you can also

use just regular cartesian coordinates go this far east, north, south, up down

those kinds of coordinates, it attitude we have an infinity of ways to describe or

in there's the classic yawning, pitching and rolling that people are familiar with,

but there are a million other coordinates that have a lot of benefits.

They all have challenges and they have benefits and we're going to go over both

pros and cons of these and really show you fundamentally how to describe it.

This is going to be now very, very useful because we can take and add it to

the descriptions of object and you have attitude description of another object and

then, you need to know the attitude of one relative to another.

How do we add subtract orientation?

What is fundamental operators?

That's rigid body kinematics.

The second section is rigid body kinetics.

That means we are now taking into account mass inertia forces and

torques acting on a spacecraft.

So the thrusters out here firing and this whole thing starts to pitch and

it starts to translate, how do you describe all these stuff mathematically?

How do we derive these equations of motion to predict and

how do we solve them numerically?

And then we also look at system that are dual spinners.

Sometimes, you have spacecraft that have a rigid part and

another big rigid part that's spinning, that's a very popular communication

satellite design some deep space missions, we'll look at gravity gradient torques,

we're looking at a system of space craft equipped with multiple rotating wheels.

Like control remote gyroscopes and reaction wheels and those devices.

We also look at free spinning motion.

In space, most of the time,

we're not controlling because we don't have much fuel or energy.

So, we have to exploit the natural dynamics and

that will be a big chunk of kinetics as well.

What's the naturally tumbling motions?

How does this object like to move?

Depending on it's shape, geometry mass distribution.