Ecologist

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Ecologist
x = 27, y = 18, rule = B3/S23 bo2bo5b2o$o8b4o$o3bo3b2ob2o$4o5b2o4$11b2o$2b3o7b2o$2bo6bo2bo$2bobo6bo$ 3b2o3b2o$25b2o$25bo$bo2bo18b3o$o$o3bo$4o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 5 TRACKLOOP 20 -1/2 0 THUMBSIZE 3 WIDTH 800 HEIGHT 480 ]]
Pattern type Spaceship
Number of cells 53
Bounding box 27 × 18
Direction Orthogonal
Period 20
Mod 20
Speed c/2 | 10c/20
Heat 61.3
Discovered by Bill Gosper
Year of discovery 1971

The ecologist is a c/2 orthogonal period-20 spaceship that was described in Lifeline Volume 3.[1] It consists of the classic puffer 2 with another lightweight spaceship added to suppress the debris by turning it into a ghost Herschel.

Variants

The central puffer engine requires dot sparks in order to continue moving, and the debris behind requires another one for perturbation. The standard ecologist uses sparks from three lightweight spaceships, however the same spark can be provided by the upper, more distant spark of a middleweight spaceship instead.

If the front spaceship which the trailing spaceship follows is a middleweight spaceship, the trailing spaceship must also be a middleweight spaceship; a lightweight spaceship in this position would interact destructively with the front escort.

None of the higher variants appear to have been synthesized so far.

Image Cells Supporting spaceships
apgcode
Synth.
cost
Ecologistwiththreelwss.png 53 top LWSS, back LWSS, bottom LWSS
xq20_7911ax27de6zwsi0120goe4zgggg1022yaa983z34w5
12
Ecologistwithlwsstopmwssbackandlwssbottom.png 56 top LWSS, back MWSS, bottom LWSS
xq20_0fh1iwok4sy0fh1iz0gy2oz3tvex4xoozy4s0ogzy4321
?
Ecologistwithmwsstopmwssbackandlwssbottom.png 58 top MWSS, back MWSS, bottom LWSS
xq20_0sighgaw8smeeczy7ggzw79dx8a0431y7ggzsiggaye223
?
Ecologistwithlwsstoplwssbackandmwssbottom.png 55 top LWSS, back LWSS, bottom MWSS
xq20_0sighgazy0g088yaai2ozw790g8013e4zsiggax8smec
?
Ecologistwithlwsstopmwssbackandmwssbottom.png 58 top LWSS, back MWSS, bottom MWSS
xq20_4eb76y1791h1azwgo4sy8gcccozx13y566x333z04eb776
?
Ecologistwiththreemwss.png 60 top MWSS, back MWSS, bottom MWSS
xq20_27dee6ydoz0gocx4s88gy6107zw11y223gz4eqsscxe98885
?


See also

References

  1. Robert Wainwright (September 1971). Lifeline, vol 3, page 6.

External links