The Pressure Oscillation Demonstrator – eXperimental (POD-X) is an experimental simulator used to measure pressure oscillations in solid rocket boosters for present and future launchers.
The POD-X incorporates 263 sensors, is 6 m long and 70 cm in diameter and can hold 2700 kg of propellant. Testing can last for 27-30 seconds at a nominal pressure of 65 bars.