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SNC Dream Chaser spaceplane (major update)

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  • #31
    Another change Dream Chaser over the last couple of years has been to the engines; they've been working on replacing the hybrid engines in the back to a Vortex-flow liquid rocket engine originally designed by ORBITEC.

    ORBITEC was bought out up by Sierra Nevada Corporation in order to get the Vortex engine, a compact space garden technology called VEGGIE (under test on ISS), and several other goodies.

    In the Vortex engine the thrust chamber can be made of aluminum because the cryogenic propellants are introduced from the chambers perimeter, protecting the Chamber from the combustion, which occurs in the center of the swirling vortex. No pipe dream, this engine is been flight tested in a subscale version.

    Correction: first flight to ISS 2020 for the Commercial Cargo 2 program, and work continues on a crew version.
    Last edited by Dr Mordrid; 13 November 2017, 20:15.
    Dr. Mordrid
    ----------------------------
    An elephant is a mouse built to government specifications.

    I carry a gun because I can't throw a rock 1,250 fps

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    • #32
      Concept of operations for Cargo Resupply Services 2 program (ISS cargo delivery - 2020+)

      Dr. Mordrid
      ----------------------------
      An elephant is a mouse built to government specifications.

      I carry a gun because I can't throw a rock 1,250 fps

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      • #33
        "In the future we believe Dream Chaser will land anywhere a 737 jet can land."

        Dream Chaser® Spacecraft Free-Flight Test Data Sheet:

        Date: Saturday, November 11th 2017
        Lift-off time: 8:30 am PT
        Release time: 09:41 am PT
        Release altitude: 12,324 feet, mean sea level
        Release equivalent air speed: 66 miles per hour
        Release angle of attack: -2.17 degrees
        Release angle of sideslip: -0.76 degrees
        Maximum speed: 330 miles per hour
        Maximum angle of attack in flight: 16.5 degrees
        Dream Chaser time in glide: approx. 60 seconds
        Dream Chaser horizontal glide distance: 16,217 feet
        Dream Chaser touch down time: 09:42 am PT
        Landing speed: 191 miles per hour
        Landing touchdown point: 1,250 feet down runway
        Landing rollout distance: 4,200 feet
        Helicopter type: Columbia Helicopters Model 234-UT Chinook
        Length of helicopter suspension system: 200 feet
        Runway: Edwards Air Force Base Runway 22 Left
        Vehicle length: 30 feet long
        Dr. Mordrid
        ----------------------------
        An elephant is a mouse built to government specifications.

        I carry a gun because I can't throw a rock 1,250 fps

        Comment


        • #34
          The UN plans to fly an un-crewed Dream Chaser mission for nations without access to a space program.

          Jeff Foust @jeff_foust
          Simonetta di Pippo, UN Office for Outer Space Affairs: when we issued a call for interest in flying experiments on SNCs Dream Chaser last year, it was open only 6 weeks, but we received 150 responses from 75 countries. #DPSS18
          Dr. Mordrid
          ----------------------------
          An elephant is a mouse built to government specifications.

          I carry a gun because I can't throw a rock 1,250 fps

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          • #35
            Latest Sierra Space & Dream Chaser spaceplane info. More in the pdf (24.5 mb)

            PDF...

            3 versions of Dream Chaser,

            DC100, DC200, DC300

            National security missions (USSF?)

            DC will do Earth point-2-point transport

            Their inflatable LIFE habitat can be a space or surface habitat. 27 ft (8.23 m) in diameter, 3 decks. Like Bigelow habitats, but much more funding.

            etc.

            Dream Chaser 100-1920.jpg

            Dream Chaser Variants-1400.jpg

            Dream Chaser 300.jpg
            Last edited by Dr Mordrid; 20 October 2021, 13:31.
            Dr. Mordrid
            ----------------------------
            An elephant is a mouse built to government specifications.

            I carry a gun because I can't throw a rock 1,250 fps

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