The explosion occurred at a time when they were testing normally Merlin, the latest engine for the Falcon 9. This happened on November 4 in Texas, at the SpaceX-owned test site. The incident was reported only at the end of this week. The device exploded when liquid oxygen was pumped through the system. In this way, the integrity of the pipelines was checked to prevent possible leaks. In connection with this case, the company is conducting an internal investigation. Despite this, these missiles will be launched in the approved schedule. It is curious that the destroyed Merlin was the engine of the latest model, significantly modified. This series is not yet used in commercial launches. Its installation will be carried out on the Falcon 9 missile Block 5 version. This carrier is adapted for launches of manned ships: • engine thrust will increase by 7-8%; • requirements for fuel residues during landing will decrease; • launch angle will be optimized; • system, controlling the flight will improve; • enhance the heat resistance of materials; • pipelines and engines will be equipped with a shield for reusable thermal protection; • for a number of elements, a first-stage coating for thermal protection will appear. Also, Elon Musk said that the new rocket The Falcon Heavy will fly by the end of 2017. But he doubts a successful first launch because the design of the new medium is extremely complex.