A Crawford burner is a device used to test burn rate (chemistry) of solid propellants.
A Crawford burner consists of a small pressure vessel in which a thin bar of propellant to be tested is mounted on a stand.
These wires are connected to a chronometer and the electrical signals are recorded at different time intervals so that burning rate can be measured.
Nevertheless, the strand burner experiment is easy to perform, can be repeated, and is a qualitative picture of the burning rate is obtained.
The temperature sensitivity of burning rate is usually calculated from strand burner test data.