Instead it used differentiall throthling of outer ring engines to provide pitch and yaw, the downside is that it does not provide roll control. I actually managed to make that in game, and it actually reduces the cost, as gimballed engines are more expensive and heavier than not gimballed ones.

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    @KirRu That was still not enough and N-1 suffered roll stability problem, but in Juno I did not encounter this problem.

    +1 9 months ago
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    @KirRu oh, good to know.

    +1 9 months ago
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    55.1k KirRu

    @deepfriedfrenchtoast @jacobssgt2
    Actually all N-1 had Roll control verniers on first three stages
    First stage on first three rockets had too small verniers, so they were changed to 4 RD-58 with short nozzle.

    Look here

    9 months ago
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    @Dereric, Sorry for my mistake, I confused RD-107 with RD-108.

    9 months ago
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    242 Dereric

    @jacobssgt2
    Are you sure?
    Afaik the RD-107 should look like 6 engines, because it has only 2 Vernier engines, the RD-108 has 4 Vernier engines. The 107 was used at the Soyuz booster, while the 108 was used at the Soyuz core stage. And both engines used 2 turbopumps, one for RP1 and one for LOX. Both pumps were powered by the same turbine, maybe that's the reason for the confusion.

    9 months ago
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    26.9k Zenithspeed

    @jacobssgt2 interesting to know either way

    9 months ago
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    @Zenithspeed
    In most Soviet engines verniers are not separate small engines, but just auxiliary combustion chambers, that share the same turbopump as the main combustion chamber. RD-107 may look like 8 rocket engines, but in real it's just one turbopump with 8 combustion chambers. Howewer, N-1 did not use verniers.

    +1 9 months ago
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    26.9k Zenithspeed

    honestly it surprises me that the Russians always opted for the little vernier thrusters (i think that's what they're called?) rather than full gimbal thrust vectoring, but hey, it works, so i'm not complaining

    9 months ago
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    yeah The N1 used grid fins on the first stage to control roll

    9 months ago

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