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A rocker bogie In motion - incorrectly shows chassis staying level; the chassis actually maintains the average of the two rockers Rocker bogie on Curiosity. The rocker-bogie system is the suspension arrangement developed in 1988 for use in NASA's Mars rover Sojourner, [1] [2] [3] and which has since become NASA's favored design for rovers. [4]
2 wheels, 1 axle: Airbus A380 nose landing gear (consisting of a single 2-wheel bogie) 4 wheels, 2 axles: An Airbus A330's main landing gear (consisting of two 4-wheel bogies) 6 wheels, 3 axles: A Boeing 777's main landing gear (consisting of two 6-wheel bogies) 14 wheels, 7 axles: The Antonov An-225's main landing gear (consisting of two 14 ...
The rocker-bogie system is a suspension arrangement, in which there are some trailing arms fitted with some idler wheels. Due to articulation between the driving section and the followers, this suspension is very flexible.
The Southern Pacific class 5000 4-10-2 employed a conventional leading bogie but used lateral motion devices on the leading driven axle to reduce the rigid wheelbase. [4] Their GS-4 class 4-8-4 also did and employed springs to control the lateral motion, thereby assisting the bogie in easing the engine into curves. [ 5 ]
The Mars rovers Spirit and Opportunity (both launched in 2004) used differential gears in their rocker-bogie suspensions to keep the rover body balanced as the wheels on the left and right move up and down over uneven terrain. [13]
A bogie in the UK, or a railroad truck, wheel truck, or simply truck in North America, is a structure underneath a railway vehicle (wagon, coach or locomotive) to which axles (hence, wheels) are attached through bearings. In Indian English, bogie may also refer to an entire railway carriage. [4]
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The wheels were connected to the frame through specially developed suspension to ensure all six were in contact with the ground, even on rough terrain. [25] [26] JPL's Don Bickler developed the wheels, which were referred to as "Rocker-bogie", for the experimental "Rocky" vehicles, of which the Sojourner is the eighth version.