$5$

$10$ points

However, many motors are designed such that there are minimal changes in the chamber pressure as one traverses the grain. In this case, we can

characterize the pressure in the chamber by a single value. Ballistic calculations performed under this assumption are referred to as

$,$ and

these techniques are the simplest approaches to compute the chamber pressure and thrust histories for a given configuration.

transient methods

spatially$-$dependent methods

erosive burning methods

lumped parameter methods