thumb|A rocker bogie thumb|In motion - incorrectly shows chassis staying level; the chassis actually maintains the average of the two rockers due to the differential thumb|Rocker bogie on Curiosity (rover)|Curiosity
thumb|A rocker bogie thumb|In motion - incorrectly shows chassis staying level; the chassis actually maintains the average of the two rockers due to the differential thumb|Rocker bogie on Curiosity (rover)|Curiosity
The rocker-bogie system is a suspension arrangement invented by NASA engineer Donald B. Bickler in 1988 for use in NASA's Mars rover Sojourner, and which has since become NASA's favored design for rovers. It has been used in the 2003 Mars Exploration Rover mission robots Spirit and Opportunity, on the 2012 Mars Science Laboratory (MSL) mission's rover Curiosity, the Mars 2020 rover Perseverance and ISRO's Chandrayaan-3 rover Pragyan in 2023.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).