USV with jet drive

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  • 2024-01-19 at 12:51 #640
    Rana Bengül
    Participant

      Hi All,

      I’m looking for an USV with jet drive but the only one I can find is the SL40 from Ocean Alpha. Do you know any other USV that are not using the “normal” propellers but any kind of other drive? I’m getting really annoyed with vegetation issues and would like to find out whether there is another working solution for an USV.

      Thanks,
      Rana

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      • 2024-01-19 at 13:36 #641
        Mikael LennermarkMikael Lennermark
        Moderator

          Hey! In another post I listed these below and I think there might be one or two with jet drive. I remember the fast RiverDrone France.

          The surfbee got one air propeller for side adjustmets at the banks.

          Once I tested a prototype the rQpod with water jets. Problem was that it stopped working when tiny stones entered the jets.

          /Mikael

          rQPOD, Xylem SonTek

          Arc Boat Lite, HR Wallingford

          Arc Boat, HR Wallingford

          surfbee.io

          Riverdrone France

          Q (also Z) boat OceanScience

          Q (also Z) boat 1250 OceanScience

          Oceanalpha.com

          Apache 4

        • 2024-01-19 at 13:57 #642
          Rana Bengül
          Participant

            Hi Mikael,

            thank you for you quick response! Yes, the surfbee has the additional air propeller, but I don’t think it helps with the vegetation issue in the water. But it is a nice addition for maneuverability, at least I would think so. Ocean alpha has the SL40 but the  other USVs on your list are all using a propeller drive (as far as I know).

            I didn’t know that a jet drive is so sensitive. Is that normal and are “only” small stones a problem or could floating vegetation be a problem es well?
            Are there any other types of drive on the market that are used in USVs?

            Thanks,
            Rana

          • 2024-01-19 at 14:13 #643
            Mikael LennermarkMikael Lennermark
            Moderator

              Not that I know of. I thougth the French RiverDrone was jet driven, Alex Hauet do you know?.. I just remebered we quickly had problems with small stones jamming the jets on the rQpod prototype. There are probably different water jets too, like in my ScubaJET for my stand up paddle board.

              For the propeller motors (the three different ones we at SMHI use) there are electric motors with drive belts (big ArcBoat) and electric motors with props water cooled and water lubricant (rQpod and ArcLite).

               

               

              • 2024-01-22 at 05:40 #645
                Rana Bengül
                Participant

                  Thank you for the additional information!

              • 2024-01-21 at 19:25 #644
                Baddocke
                Participant

                  Hi all, we have a small jet boat we use here for survey work mainly, not ADCP gauging’s – although it can be. We are still looking at developing this further with a better hull design to aid ‘ferry gliding’ across the transect/section better.

                  Not in any sort of commercial stage as yet sorry, but could be built on request I’m guessing.

                  Evan.

                  • 2024-01-22 at 12:37 #646
                    Rana Bengül
                    Participant

                      Hi Evan,
                      does survey work mean, that a multi beam can be installed as well?

                  • 2024-01-22 at 21:56 #648
                    Baddocke
                    Participant

                      I would think so, mainly been depth sounders and ADCP to date.

                      Remember, if weed affects the props it will also be sucked into the jet intake – but nothing hanging down so does have some advantages (shallow/gravel ok).

                      E.

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