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  • gyrocopter REVO

    gyrcopter REVO (France)

    https://www.youtube.com/channel/UCx0...CkYgLE2Dw9kzLA

    sites.google.com/site/autogirerevo/
    Attached Files
    Last edited by TNVD; 06-23-2015, 12:08 PM.

  • #2
    something different !

    Wow, I like that REVO gyro's direction.
    Retractable gear? Is he planning on going fast? Looks cool.
    Could be significant fuel storage in the wing area, but I only saw two red (5 gallon-ish?) fuel cells.
    Will have to try and keep up with development on this one...
    Thanks for pointing it out!
    Brian

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    • #3
      Looks like they are using some kind of 3cyl auto engine for power.

      Comment


      • #4
        Hey looks like what I drew in 2012

        To be on the record and probably half of dozen of forum members here have seen briefly my 2 year old design sketches that hmmmm seem very much like this one. Also did a side by side version design concept similar to this.

        They may have a problem with the name Revo as its used by my old company which designed, markets and manufactures a trike called the Revo that is also available in Europe.
        Attached Files

        Comment


        • #5
          It is extremely similar to our advanced gyroplane that is being developed slowly since 2009.

          I mean Shape and retracts..... we have other advancements that will be included in ours.

          a single image can be seen in www.aviomania.com
          Nicolas Karaolides
          CYPRUS
          WEBPAGE http://www.aviomania.com/

          Dead stick landing http://www.youtube.com/watch?v=Uv9q6hlrzdk
          G1sa 99 hour Testing http://www.youtube.com/watch?v=2aykdaMqOPQ
          Join me on-board G1sa http://www.youtube.com/watch?v=qRZLPL4sCuA

          The 2 seat G2sa "Genesis Duo" early testflights
          http://www.youtube.com/watch?v=aPw_3b-DeYI
          and
          http://www.youtube.com/watch?v=cUxH7X77f64

          BOOSTER PREROTATOR http://www.youtube.com/watch?v=0M4gNx40-bE

          Comment


          • #6
            Originally posted by Aviomania View Post
            It is extremely similar to our advanced gyroplane that is being developed slowly since 2009.

            I mean Shape and retracts..... we have other advancements that will be included in ours.

            a single image can be seen in www.aviomania.com
            You are right. It is more similar to your design than my concept. The tail booms I had were complex curves and also acted as vertical stability enhancing surfaces and incorporated the wings in with them meshing into a winglet and tail all in one than the simpler straight back tubes.

            You should talk to them seriously because yours is "too" similar to their design. It would be interesting to know how and why they came up with this idea. I do not understand why with such complex shapes, the structure is not made from the skin and instead a metal frame is being used.

            Comment


            • #7
              Similar to the Sport Copter IV they show on their future products page

              Comment


              • #8
                How does it work?

                How is the angle of attack of the little wings managed?

                How is the change in the rotor load managed?

                What is the goal of the design?
                Regards, Vance Breese Gyroplane CFI http://www.breeseaircraft.com/

                Comment


                • #9
                  Originally posted by Vance View Post
                  How is the angle of attack of the little wings managed?

                  How is the change in the rotor load managed?

                  What is the goal of the design?
                  Hi Vance:
                  I can't answer for others but the original sketch of my concept does not on purpose clarify many details. Some of your questions are simple so I'll take a shot at them.

                  The angle of attack of such small wings is fixed. It does not change. At a certain speed, the wing produces lift roughly about 18 to 22% of the weight and unloads the rotor and allows you cruise faster. This has no perceptible effect to the pilot.

                  Comment


                  • #10
                    Originally posted by fara View Post
                    Hi Vance:
                    I can't answer for others but the original sketch of my concept does not on purpose clarify many details. Some of your questions are simple so I'll take a shot at them.

                    The angle of attack of such small wings is fixed. It does not change. At a certain speed, the wing produces lift roughly about 18 to 22% of the weight and unloads the rotor and allows you cruise faster. This has no perceptible effect to the pilot.
                    Thank you Abid!

                    The lift curve an airfoil suggests to me that if it is lifting 20% of the weight at 100 miles per hour if I pull back on the cyclic the wing lift will increase as the nose pitches up slowing the rotor.

                    It seems to me that at some point this becomes problematic without an elevator.

                    What am I missing?
                    Regards, Vance Breese Gyroplane CFI http://www.breeseaircraft.com/

                    Comment


                    • #11
                      Originally posted by Aviomania View Post
                      It is extremely similar to our advanced gyroplane that is being developed slowly since 2009.

                      I mean Shape and retracts..... we have other advancements that will be included in ours.

                      a single image can be seen in www.aviomania.com
                      all new is well forgotten past :)

                      http://www.vrtulnik.cz/gyro/schimmel.htm



                      Comment


                      • #12
                        Originally posted by Vance View Post
                        Thank you Abid!

                        The lift curve an airfoil suggests to me that if it is lifting 20% of the weight at 100 miles per hour if I pull back on the cyclic the wing lift will increase as the nose pitches up slowing the rotor.

                        It seems to me that at some point this becomes problematic without an elevator.

                        What am I missing?
                        Hi Vance:
                        You can select airfoils and put the incidence in such a way that if you pull up, the winglet will stall out quite rapidly before anything else happens. Pulling up also increases loading on the rotor as well and things do not become dis-proportionate. The proportionality between rotor disc and the winglet continues till winglet stalls. Hope that makes sense. We did this same trick in trike landing gear fairings and trikes are weight shift control so its even more noticeable there. Although the current landing gear fairing on the trikes and current gyro only produces enough lift to may be replace in the area of 80 to 90 pounds of lift. The larger percentage would be from these newer design concepts here I was referring to.
                        Last edited by fara; 06-24-2015, 03:50 AM.

                        Comment


                        • #13
                          Has this machine ever flown?

                          Comment


                          • #14
                            Originally posted by Steve_UK View Post
                            Has this machine ever flown?
                            which one ?
                            - REVO
                            - AVIAMANIA
                            - CZ one

                            REBO - not yet
                            AVIAMANIA - not yet
                            CZ one yes, in 2008 : "Pokus o létání v Roudnici v červnu 2008. Pilot Karel Sluka."

                            Comment


                            • #15
                              One of the early Groen Hawks.

                              https://upload.wikimedia.org/wikiped..._founders.jpeg

                              .
                              Attached Files

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