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Coaxial-mechanic, Kamov Ka-52 - From Germany

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    Coaxial-mechanic, Kamov Ka-52 - From Germany

    Hi all

    Saw this one from other forum. It is by "AntiElch", from Germany. It is a coaxial-mechanic with jetcat turbine SPT5-H. The rotorcycle is 2400 mm.

    "AntiElch"... if u happen to see this post, thank you for the nice pictures.

    SH


    #2
    When u buying or building one???

    Comment


      #3
      Woah...........
      Now thats Machining.

      Thanx!
      SLOPE SOARING NOT A CRIME

      The irresistible desire, for the irresistibly desired

      Multiplex Royal Evo 12 user, and Proud of it.

      Comment


        #4
        Buying it.... No money lah.
        Building it.... Haven't manage to find any "off the selve" parts to do it leh.

        Want to have it? Yeah.. Like to try that kind of heli.

        SH

        Comment


          #5
          A video of a similar rotor head design...but it is nitro engine:


          SH

          Comment


            #6
            Are u refering to this?
            (This is what some country... I think U.S. been doing)

            SH

            Comment


              #7
              coaxial,,,,,,,,,

              COOLLLLLLLLLL SH,u su buy this not T-rex BB.
              没办法了,须改变自己,来试应环境。

              Comment


                #8
                is that guns i see?
                Losers whine about their best. Winners date the Prom Queen.

                Most people talk a lot, only few are up for the moment.

                Suck Squeeze Bang Blow
                20,000 times a min

                Comment


                  #9
                  Yup... The black colored weapon is a REAL weapon. "Auto Assault-12 (AA-12) Shotgun"

                  Heli-Lim.... I wish I have that Coaxial heli... but I know I can't afford it.... Unless Santa give it to me.

                  SH
                  Last edited by Super-Hornet; 03-03-2006, 10:51 PM. Reason: Correct some typo error

                  Comment


                    #10
                    Originally posted by Frank
                    You shouldn't say that here
                    I agree,
                    My Hangar:

                    Heli 1:T-REX 450SE (Hughes MD 500)
                    (SE-maiden 15/03/06)
                    (XL-maiden 16/10/05)

                    Heli 2:RAPTOR 50 TITAN
                    (TITAN-maiden 16/06/2006)

                    Heli 3:T-REX 500ESP (T-rex maiden 25/9/10)
                    (FLASHER 500-maiden 08/10/2009 R.I.P:09/08/10)

                    Heli 4:Flasher 250
                    (maiden 13/09/2010)

                    Airplane 1:GWS A-4SU Skyhawk For Sale
                    Airplane 2:GWS P-40N WarHawk RAAF maiden flight 20/08/10 For Sale

                    Transmitter:
                    JR 9XII(XPS 2.4)

                    Its all fun & games till the bills come..

                    Comment


                      #11
                      are there more details bout the rotor head design? seems very clever and unique. the top rotor pitch controlling mechanism seems to be controlled by oil pressure?

                      i noticed that the bottom rotor is 90deg CCPM, but the top rotor is 120deg CCPM. why?

                      Is it to fit through the bottom rotor? or is it that 90deg CCPM can be mechanically mixed to 120deg CCPM?
                      -* Project Swift *-

                      Comment


                        #12
                        yc i've been thinking about the electronic mixing for rudder to collective...its not possible, because the mixing cannot occur when the gyro corrects the rudder,only when the rudder stick is moved. a mechanical mixing has to be used.

                        but weirld from the babelfish translations i get, it seems he did manage to get a electronic mixing to be done. another thing is he used a 15kg quarter scale servo to move the rudder which then leads me to suspect it could be mech mixing as well. i'll put up a post to see if its possible to electronically mix rudder to collective

                        wanna try a three bladed head? should be able to find some 15mm swash plates

                        and on the ccpm issue..i thinkits because it is a three blade design. four servos used below because the torque needed to move two disks may be quite high.
                        Last edited by Brandon Chng; 08-03-2006, 04:55 PM.
                        JR 9x
                        Raptor 50 SE
                        Raptor 90 3D
                        Mini-Titan


                        Superb machine!

                        Piper Warrior 2 Pa-28-161
                        Lycoming O-320-D3G 160HP

                        Pilatus PC-21
                        Pratt & Whitney PT6A-64B 1600SHP

                        Comment


                          #13
                          The way I look at it is that the system is controlled by CCPM 90 Degree.

                          It doesn't matter whether the top swash plate is 120De or 90D because it is connected to the bottom swash plate. If the top swash is 120D, so long as the bottom swash plate has a 120Degree linkage for the top swash, can already liau. Bottom swash plate tilt, the top swash also tilt.

                          SH
                          Last edited by Super-Hornet; 08-03-2006, 09:00 PM. Reason: Correct some mistake.

                          Comment


                            #14
                            yup which leads me to think...

                            if we're using a two rotor, two bladed head with two swash plates, we'd need more than two linkages going up fromt he bottom to the top swash to secure it. if two is used, the top swash will deflect in another direction cos its not secured in all directions.

                            lets do a three bladed head
                            JR 9x
                            Raptor 50 SE
                            Raptor 90 3D
                            Mini-Titan


                            Superb machine!

                            Piper Warrior 2 Pa-28-161
                            Lycoming O-320-D3G 160HP

                            Pilatus PC-21
                            Pratt & Whitney PT6A-64B 1600SHP

                            Comment


                              #15
                              If u only have standard swash plate, doing Four Rotor Blades is easier than 3 Rotor Blades.

                              Here is something I did before for TRex:

                              Comment

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