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/sci/ - Science & Math

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>> No.11140398 [View]
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11140398

>>11140314
>>11140306
If I remember correctly the soviets didn't use ullage motors. Instead they separated the stages only by that gap supported by structures so they could ignite the next stage before detaching the previous one. The gaps allow for the gasses to escape around. It sounds primitive but it actually works fine.

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