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                    "@DEF":"PropellorControlSurfaces",
                    "-children":[
                      { "Transform":
                        {
                          "@rotation":[0.58,0.58,0.58,2.09],
                          "@scale":[4,1,1],
                          "@translation":[-1,0.825,-1.75],
                          "-children":[
                            { "Shape":
                              {
                                "-appearance":
                                  { "Appearance":
                                    {
                                      "-material":
                                        { "Material":
                                          {
                                            "@diffuseColor":[0.15,0.8,0.8]
                                          }
                                        }
                                    }
                                  },
                                "-geometry":
                                  { "Extrusion":
                                    {
                                      "@creaseAngle":1.785,
                                      "@crossSection":[0.1,0,0.03,0.028,-0.01,0.038,-0.04,0.035,-0.07,0.02,-0.08,0.01,-0.085,0,-0.08,-0.015,-0.04,-0.028,0,-0.021,0.03,-0.014,0.06,-0.008,0.1,0],
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                                  }
                              }
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                          ]
                        }
                      },
                      { "Transform":
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                          "@scale":[4,1,1],
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                          "-children":[
                            { "Shape":
                              {
                                "-appearance":
                                  { "Appearance":
                                    {
                                      "-material":
                                        { "Material":
                                          {
                                            "@diffuseColor":[0.15,0.8,0.8]
                                          }
                                        }
                                    }
                                  },
                                "-geometry":
                                  { "Extrusion":
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                                  }
                              }
                            }
                          ]
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                      }
                    ]
                  }
                }
              ]
            }
          },
          { "ROUTE":
            {
              "@fromField":"fraction_changed",
              "@fromNode":"Clock",
              "@toField":"set_fraction",
              "@toNode":"PropSpin"
            }
          },
          { "ROUTE":
            {
              "@fromField":"value_changed",
              "@fromNode":"PropSpin",
              "@toField":"rotation",
              "@toNode":"Propellor"
            }
          }
        ]
    }
  }
}