E-2 Full Engine Assembly 90-Second Test Fire

E-2’s first 90-second test fire was a success! It performed at 55% power with a low conservative 1.6 mixture ratio as planned. The hardware appears in perfect condition ready for more tests. This is an exceptional result for a first test article (E-2 SN1). The test was also a key milestone for our US Space Force TACFI contract.
We’ve wrapped up this test campaign and will be back in January with an updated injector featuring lower LOX passage pressure drop to allow us to increase the LOX mass flow and in turn reach full thrust and high performance O/F mixture ratio of 2.62.
We thank our team and partners for making this possible - especially ‪@NASAStennis‬ and their team. We would also like to thank the US Space Force for their TACFI contract support.
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[@spacefreeman]

No mach diamonds? Was this because of test profile with 55% of power?

[@mocko69]

Sexyyy!!! Ignition looked really good, the power is immense, only those sparks at cutoff concern me, are those nominal? Also I don't see any turbopump exhaust, I assume this engine is closed cycle?

[@Clematisch]

Yes, oxygen-rich staged-combustion

[@thedarkside13]

Pls, more videos/tests like this.🙂

[@desmond-hawkins]

Beautiful! Any metrics to share? Like chamber pressure, ISP…