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    ISRO's Reusable Launch Vehicles

    I agree with @Anupu regarding Oxygen collection. It would not collect, but consume the oxygen in atmosphere and use it as oxidiser.
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    ISRO's Reusable Launch Vehicles

    If I to believe news or what I've heard, it would be a three stage platform with SCRAMJET being in second stage and Third and final stage would be semi cryogenic. What is more intriguing is coming of news about using Subsonic RAMJET as first stage. Can't say how much true it is. But anyway...
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    ISRO's Reusable Launch Vehicles

    But I am not understanding at all the fuss of making using of RAMJET propulsion in the first place for RLV. What good it would be of? You could definitely work on this mechanism, but associating it with RLV is confusing in itself.
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    ISRO's Reusable Launch Vehicles

    RAMJET SCRAMJET can't propel anything from zero. They do only work while in motion. So for initial propulsion you do definitely need a liquid or solid propulsion unit.
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    ISRO's Reusable Launch Vehicles

    http://www.firstpost.com/india/rlv-td-isro-irnss-reusable-satellite-navigation-global-positioning-system-gps-navic-chandrayaan-mangalyaan-2755602.html Well here you could find one tweet vid. Can't say if its of today or not
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    ISRO's Reusable Launch Vehicles

    What I mentioned is in context of a Hybrid engine like SABRE, which could be used as single engine for RLV instead of multiple rocket engine. But ofcourse in space you would have to rely on the old rocket engine to propel or in something like the ION thruster.
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    ISRO's Reusable Launch Vehicles

    Yes........ But in theory it could work if you are traveling in supersonic speed. That means you do need some serious initial thrust to start off at first :).
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    ISRO's Reusable Launch Vehicles

    Going by the article and whatever is there in net, it should be a rocket engine for takeoff as of now.
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    ISRO's Reusable Launch Vehicles

    Right.............. Now we are trying to develop a hybrid engine. Not only we but US, UK Russia, China are in the race too. But till now we have not been able to do so. Even SABRE used by SKYLON has not yet been perfected. So I think as of now if we do launch any RLV, it would make use of the...
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    ISRO's Reusable Launch Vehicles

    I seriously doubt it. To reach at a speed of Mach 3, so that the RAMJET could work, you need serious thrust. More then what single conventional Tubojet could offer. Moreover as per design too, assembling four different engines on a single craft would be impractical in my opinion as it would...
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    ISRO's Reusable Launch Vehicles

    Yes...........I think it would use rocket booster to propel itself before switching on to RAMJET and then to SCRAMJET. Because technically RAMJET wouldnot work in subsonic speed. You would need to propel it to supersonic speed first so that RAMJET could work and take over from there.
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