Carnival shuttle
From LifeWiki
Carnival shuttle  
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Pattern type  Oscillator  

Number of cells  58  
Bounding box  39×7  
Period  12  
Mod  Unknown  
Heat  53  
Volatility  0.93  
Strict volatility  0.51  
Discovered by  Robert Wainwright  
Year of discovery  1984  
 
 

Carnival shuttle is a period 12 oscillator that was found by Robert Wainwright in September 1984 (using middleweight emulators at the end, instead of the monograms shown here). It was used to create the first known nontrivial period 24 oscillator, 186P24.
The carnival shuttle, as shown, comprises two distinct components:
 The shuttle itself, a reaction between two ttetrominos. Its stability requires the suppression of one birth per period at both ends of the shuttle.
 A periodically hassled beehive, which can provide stabilization for two adjacent shuttles.
Using just these two components, a spatial period 15 wick can be constructed. A finite version requires the addition of sparker oscillators as caps.
External links
 Carnival shuttle at the Life Lexicon
 Carnival shuttle at Adam P. Goucher's Catagolue
Categories:
 Patterns
 Oscillators with 58 cells
 Patterns with 58 cells
 Patterns found by Robert Wainwright
 Patterns found in 1984
 Oscillators
 Oscillators with period 12
 Oscillators with heat 53
 Oscillators with volatility 0.93
 Oscillators with strict volatility 0.51
 Patterns with bilateral orthogonal symmetry
 Flipping oscillators