| 11. | This second production run was to be equipped with an uprated ramjet.
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| 12. | It is unsure whether the improved ramjet was ever produced.
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| 13. | The sustainer engine was a Marquardt MA-74 ramjet.
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| 14. | The thermoreactor is a small jet engine, ramjet-pulsejet hybrid.
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| 15. | :: Valveless ramjets are the clear winner there though.
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| 16. | Is the debut album of Japanese J-pop band Ramjet Pulley.
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| 17. | Exactly how close the Russian ramjet is to deployment isn't clear.
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| 18. | These included live ramjets, but still had no guidance system or warhead.
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| 19. | This made the ramjet ideally suited to these roles.
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| 20. | Some are ramjets or even a complete turbojet engine.
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