OK, so it would be some kind of fireproof insulation ? It makes some sense as Proton stages rely on "hotfire" ignition, which means that there is always some backfire during the few seconds.
OK, so it would be some kind of fireproof insulation ? It makes some sense as Proton stages rely on "hotfire" ignition, which means that there is always some backfire during the few seconds.
Oh yes that's right of course. I had that pic but "forgot" they were actually assembling the stack, that's the issue when you focus on details and "lose the big picture". Well, thanks, I'll see what I can do with Blender, the problem with cloth-like stuff is that it should always move a bit (no real wind that high but still acceleration)...
First draft, the proportions should be good, I used the schematics provided above. Had the main engine ready, because it is 1/4th of the second stage one, but fixed and steered by the verniers. I'll see what I can do with the cover once the verniers are set, still have to figure how the actuators are actuated and articulated because I want them to animate properly. Then there's nothing really very complex on the stage body.
RD-0214 (GRAU Index: 8D811): An evolution of the RD-0207 engine, used as vernier engine of the RD-0212 propulsion module along the RD-0213. It has four combustion chambers that can gimbal 45 degrees in a single plane and allow the Proton third stage to have vector control.
@Urwumpe : so in the case of those verniers, they get their fuel/oxydizer through the pumps of the main engine, right ?