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by bewaretheirs
1203 days ago
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Yes, the Soyuz (the workhorse Soviet/Russian launcher for crew, smaller satellites, and space station cargo) is ignited that way (and it's mentioned at the Everyday Astronaut page linked above, just under the "Ignition on the Ground" heading). There are pyros on top of the wood, so it's really just a really large electrically ignited match. IIRC the Soyuz family have five ground-start engines (propellant pump sets) which feed a total of 20 main and 12 steering combustion chambers across the center core and 4 boosters, so they need to light 32 of them for each launch. Multiple combustion chambers per engine was their way to mitigate combustion instability; Rocketdyne blew up a lot of engines before they figured out a different approach (involving baffles on the injector plate) in the Saturn V's F1 engine. |
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