Shuttle

A shuttle is an oscillator in which an unstable object moves back and forth between stabilizing objects. The most well-known and first discovered examples are the queen bee shuttle (which is sometimes referred to as the shuttle) and the twin bees shuttle. A large number of T-tetromino and pre-pulsar shuttles are known, including the p30 Eureka. Reflectors can be used to construct glider shuttles (see relay).

x = 22, y = 7, rule = B3/S23 9bo$7bobo$6bobo11b2o$2o3bo2bo11b2o$2o4bobo$7bobo$9bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 AUTOSTART GPS 25 ]]

queen bee shuttle (click above to open LifeViewer) RLE: here Plaintext: here

Simple shuttles must have a period that is a multiple of 2, and quasi-shuttles are also known, in which each end is stabilised by a different mechanism from the other, allowing for shuttles with an odd period.

Glider shuttle

A glider shuttle is a shuttle in which a single glider bounces back and forth between two sides.

x = 32, y = 32, rule = B3/S23 2bo10bo2bo$b3o13bo$3obo13b2o$bo3bo6bob2o6bo$2bo3bo5bo2bo3bo$3bob3o3bo 3bob3o$4b3o3bo11bo$5bo7b3obo3bo$13bo3bo2bo$10bo6b2obo$8bo4b2o$7b2o6bo$ 7bobo6bo2bo3$2b2o$bobo$bo$2o23bo2bo$24bo$22b2o$19bo6b2obo$8b2o4b2o6bo 3bo2bo$8b2o4b2o6b3obo3bo$19bo11bo$20bo3bob3o$7bob2o3b2o5bo2bo3bo$7bobo 4b2o5bob2o6bo$8bo18b2o$8b2o16bo$8b2o12bo2bo$8b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 AUTOSTART GPS 25 ZOOM 8 HEIGHT 560 ]]

p88 glider quasi-shuttle (useful model for 8n SKOPs) (click above to open LifeViewer) RLE: here Plaintext: here

See also

• Shuttles (category)

External links

• Shuttle at the Life Lexicon