Schick engine
| Schick engine | |||||||||
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| Pattern type | Tagalong Spaceship | ||||||||
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| Number of cells | 39 | ||||||||
| Bounding box | 20 × 11 | ||||||||
| Direction | Orthogonal | ||||||||
| Period | 12 (mod: 12) | ||||||||
| Speed | c/2 | 6c/12 | ||||||||
| Heat | 43.2 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | Paul Schick | ||||||||
| Year of discovery | 1972 | ||||||||
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The Schick engine (or Schick ship) can refer to one of four period-12 c/2 orthogonal spaceships which involve a flotilla of two standard spaceships pulling a period-12 tagalong. The term "Schick engine" may alternatively be used to refer to the tagalong alone, separately from the two spaceships supporting it.
This tagalong was found by Paul Schick in 1972.
The four possible spaceship types are displayed below, with the tagalong portion highlighted in green:
| Image | Name | Min. population | Supporting flotilla | apgcode | Cost in gliders |
|---|---|---|---|---|---|
|
Lightweight Schick engine | 39 | LWSS on LWSS (pseudo) | xq12_fh1i0i1hfzw8sms8zxfjf | 10 |
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Middleweight Schick engine | 42 | MWSS on MWSS 1 | xq12_v1120211vz01gpcpg1zxv7vzy01 | 11 |
|
Heavyweight Schick engine | 44 | HWSS on HWSS 1 | xq12_v1120211vz120ioi021zw1vev1zx121 | 14 |
|
Asymmetric Schick engine | 42 | LWSS on HWSS 2 | xq12_xupuzw27d72zu10109ghuz3221 | 11 |
Its eleven-cell rear spark can be perturbed by other c/2 spaceships to form a variety of puffers and thus it is a puffer engine.[1]
A lightweight Schick engine first appeared naturally on February 12th, 2019,[2] having previously emerged (along with its middleweight and heavyweight variants) from symmetric soups on Catagolue.[3][4][5] A second natural Schick engine appeared in October 2020.[6]
An 11-glider synthesis for the lightweight Schick engine was found by Douglas G. Petrie in 1973.[7]
See also
References
- ↑ Robert Wainwright (March 1973). Lifeline, vol 9, page 5.
- ↑ Adam P. Goucher (February 12, 2019). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Richard Schank (December 14, 2014). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Richard Schank (March 10, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ gmc_nxtman (March 20, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ bubblegum (October 5, 2020). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Robert Wainwright (September 1973). Lifeline, vol 11, page 19.
External links
- Schick engine at the Life Lexicon
- The Schick Engine (glider 13374) at David Eppstein's Glider Database
- 39P12H6V0.1 at Heinrich Koenig's Game of Life Object Catalogs
- Patterns
- Spaceships with 39 cells
- Periodic objects with minimum population 39
- Patterns with 39 cells
- Patterns found by Paul Schick
- Patterns found in 1972
- Patterns that can be constructed with 10 gliders
- Outer-totalistically endemic patterns
- Spaceships
- Tagalongs
- Spaceships with period 12
- Orthogonal spaceships
- Spaceships with speed c/2
- Spaceships with unsimplified speed 6c/12
- Spaceships with heat 43
- Spaceships with mod 12
- Smoking ships
- Puffer engines
- Patterns with bilateral orthogonal symmetry
- Natural periodic objects