Closed cycle has another advantage over open cycle for kerosene - namely, the vibrations in the chamber are more manageable. Which paradoxically can make the en

Closed cycle has another advantage over open cycle for kerosene - namely, the vibrations in the chamber are more manageable. Which paradoxically can make the engine more reliable. A suspicion is that the engines didn't quite survive the long storage... indeed they weren't quite designed for that. But we'll wait for results of analysis of the explosion.