Fireship

Fireship[1] is a c/10 orthogonal spaceship discovered by Simon Ekström on 20 March 2016[2] when looking for tagalongs for the copperhead. It is not considered a true tagalong (although it is commonly referred to as one) due to three of the tagalong's ten phases interacting with the copperhead's block.[3]

Fireship
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Pattern type Spaceship
Number of cells 42
Bounding box 10×18
Direction Orthogonal
Period 10
Mod 10
Speed c/10
Speed (unsimplified) c/10
Heat 47.6
Discovered by Simon Ekström
Year of discovery 2016

Due to the huge tail spark it produces, it has been used to create c/10 puffers and rakes using a glider loop system.

Reactions

Tanner Jacobi noticed that the rear end of the fireship can be attached to two other fireships, thus allowing for ships of arbitrary size,[4] and these are true tagalongs. Nico Brown built a puffer and a rake using copperheads with tagalongs to make a signal loop.[5]

Cottonmouth

A pushalong for both the copperhead and the fireship known as the cottonmouth was found by AforAmpere on March 24, 2018. Because its front end matches that of the fireship, it can be infinitely placed on itself.[6]

Beehive tagalong

On October 11, 2018, christoph.r discovered that a flotilla of three fireships could support a beehive tagalong, increasing the ship's period to 20.[7]

Synthesis

Nico Brown found a 30-glider synthesis of the fireship on March 21, 2016.[8] Goldtiger997 and gmc_nxtman found a 20-glider synthesis on July 11, 2017.[9] Multiple improvements were made culminating in an 18-glider synthesis by Ekström on January 10, 2018.[10]

<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 15, y = 24, rule = B3/S23 9b2o$9b2o$8bo2bo$8b4o$7bob2obo$8bo2bo2$7b2o2b2o$6bo6bo2$7bo4bo$8bo2bo$ 9b2o2$6b2o4b2o$5bo2bo2bo2bo$6b2o4b2o$7bo4bo4$2o$b2o$o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] <html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html>
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A glider about to be reflected by a fireship
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<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 34, y = 23, rule = B3/S23 4b2o10b2o10b2o$4b2o10b2o10b2o$3bo2bo8bo2bo8bo2bo$3b4o8b4o8b4o$2bob2obo 6bob2obo6bob2obo$3bo2bo8bo2bo8bo2bo2$2b2o2b2o6b2o2b2o6b2o2b2o$bo6bo4bo 6bo4bo6bo2$2bo4bo6bo4bo6bo4bo$3bo2bo8bo2bo8bo2bo$4b2o10b2o10b2o2$b2o4b 2o4b2o4b2o4b2o4b2o$o2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo2bo$b2o4b2o4b2o4b2o 4b2o4b2o$2bo4bo6bo4bo6bo4bo2$14bo2$17b3o$17bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART GPS 5 TRACKLOOP 20 0 -1/10 ]]<html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html>
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2c/20 fireship tagalong
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gollark: If you ban computers you'll just get people mining by hand.
gollark: https://osmarks.net/ttt/I have made a *highly* advanced 3D tic-tac-toe game. You should play it, iff you should play it.
gollark: And don't understand probability intuitively. Or at all, mostly.
gollark: I agree. I don't think it's right that humans are in the wrong place on some 1D risk-aversiveness slider, but that we judge risk very wrongly.
gollark: Something being unethical doesn't actually stop people from doing it, mostly.

References
  1. Ivan Fomichev (20 March 2016). "Re: is this c/10 spaceship known?". Retrieved on 3 July 2016.
  2. Simon Ekström (20 March 2016). "Re: is this c/10 spaceship known?". Retrieved on 20 March 2016.
  3. towerator (20 March 2016). "Re: is this c/10 spaceship known?". Retrieved on 30 June 2016.
  4. Tanner Jacobi (March 20, 2016). "Re: is this c/10 spaceship known?". Retrieved on March 20, 2016.
  5. Nico Brown (March 20, 2016). "Re: is this c/10 spaceship known?". Retrieved on March 20, 2016.
  6. AforAmpere (March 24, 2018). "Re: Spaceship Discussion Thread". Retrieved on August 30, 2018.
  7. christoph.r (October 11, 2018). "Re: Thread for your unsure discoveries". Retrieved on November 30, 2018.
  8. Nico Brown (21 March 2016). "Re: is this c/10 spaceship known?". Retrieved on 3 July 2016.
  9. Goldtiger997 (July 11, 2017). Re: is this c/10 spaceship known? (discussion thread) at the ConwayLife.com forums
  10. simeks (January 10, 2018). "Re: Small Spaceship Syntheses". Retrieved on March 8, 2019.
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