Third Place Winner
            "Best Mechanical Device"
      http://www.fractalus.com/contest98/


Turbine_Engine     { ; (c) Paul N. Lee -- Aug 17, 1998 - 21:10:17
                     ; time= 0:00:36.85 on a P-200 at 1024x768
                     ; using FractInt 1960.0
                     ; MAP= Metal_5.map
  reset=1960 type=formula formulafile=fractint.frm formulaname=OK-42
  function=flip/ident/tan/ident passes=1
  center-mag=0.000137565/1.0165e-005/0.6215581 params=1/1/0.8/0
  float=y maxiter=1500 inside=bof61 outside=atan potential=256/300/0
  invert=0.3/0/0
  colors=000d00<6>Q`m<29>3vy3wy2xz2xz2vx<44>011000000<14>IIIJJJJJI<27>\
  UP1VP0VP0VP0<29>JJIJJJIII<13>111000077<39>0uu0ww0xx0zz0zz1yz2xz<15>\
  LepMdoPZh<5>d00
  }

OK-42 { ; MUTATION OF FN + FN
  z = pixel, p1x = real(p1)+1, p1y = imag(p1)+1
  p2x = real(p2)+1, p2y = imag(p2)+1:
   zx = real(z), zy = imag(z)
    x = fn1(zx*p1x - zy*p1y) + fn2(zx*p2x - zy*p2y)
    y = fn3(zx*p1y + zy*p1x) + fn4(zx*p2y + zy*p2x)
    z = x + flip(y)
    |z| <= 20
  }