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Second stage on Relativity’s first launch fails to fire

The first test launch of Relativity’s 3D rocket, Terran-1, achieved the mission’s minimum goals, with the first stage performing exactly as planned and the 3D-printed rocket successfully completing engine cut-off and stage separation.

At that point the second stage engine failed to fire, and the upper stage fell into the ocean.

I have embedded the live stream from last night below. The company had made it clear that their number one goal for this flight was getting that 3D-printed rocket through max-q, the time when the atmospheric pressures on the rocket are their greatest. In this area the launch was a success.

This was also the first American launch of a methane-fueled rocket, and it was fascinating seeing the difference in the rocket’s plumes from other fuel types. Terran-1’s engine plumes were a clear distinct blue, quite different from the white and smokey plumes produced by solid-fueled and kerosene-fueled rocket engines, and the almost invisible plume of space shuttle’s hydrogen-fueled engines.

As yet, no methane-fueled rocket has reached orbit, though two Chinese companies and Relativity have tried. SpaceX will try itself when it launches Superheavy/Starship.

Genesis cover

On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.

 
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.


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"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News

3 comments

  • sippin_bourbon

    I think it fired. The video seems to show a action, briefly, on the 2nd stage. However, it either failed to maintain it, or had some other fault.

    Either way, for all the companies that are investing in methalox, this represents proof of concept.

  • Leonard

    Fascinating!
    Thank you.

  • pawn

    This is a great start guys. I hope they can try again soon. A problem like they had seems like something obvious happened. Anyone know or wants to take a guess?

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