| 11. | A turbopump was used to inject fuel and oxygen into the combustion chamber.
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| 12. | Engine development was complicated by serious turbopump problems.
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| 13. | The booster lifted and flew for 18 seconds, whereupon the LOX turbopump disintegrated.
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| 14. | The turbopump initial spin-up is pyrotechnic.
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| 15. | Also found was one turbopump, which is an engine part where fuel is pressurized.
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| 16. | This turbopump must be powered by something.
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| 17. | This creates excess pressure to the turbopump and causes unintended excessive fuel to be delivered.
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| 18. | The turbopump that it is replacing has 469 welds, each one a potential weak spot.
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| 19. | The damaged turbopump continued to allow oxidizer to flow, feeding the fire beneath the vehicle.
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| 20. | Aestus II development was supported by Pratt & Whitney Rocketdyne which provided turbopump to the engine.
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