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Skylon

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1 minute ago, JoeSchmuckatelli said:

4 engines shutting down is a 10 percent reduction in potential, right? 

Any chance it was related to water from the deluge system? 

I say its unlikely, its not much worse than the first launch. More likely issues with the spin up system and raptors being hard to start. More so on an full stack as opening the valves will reduce the pressure in to the turbo pumps much more than on an one engine test stand. 
For the water as I seen most is directed outward, for the core ones having the jets collide would help for the center ones, a lot like how rocket engines injectors work. 

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