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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]
With the addition of these suspension systems, there is a further tilting or leaning mechanism that connects the suspension system with the vehicle body (chassis). The tilting suspension system improves stability, traction, the turning radius of a vehicle, and the comfort of riders as well.
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] The Curiosity and Perseverance rovers used a differential bar instead of gears to perform the same function. [14]
An articulated bogie (aka Jakob-type) is any one of a number of bogie designs that reduce weight, increase passenger comfort, and allow railway equipment to safely turn sharp corners, while reducing or eliminating the "screeching" normally associated with metal wheels rounding a bend in the rails. There are a number of such designs, and the ...
Some mechanisms that produce reciprocating, or repeating, motion are designed to produce symmetrical motion. That is, the forward stroke of the machine moves at the same pace as the return stroke. These mechanisms, which are often referred to as in-line design, usually do work in both directions, as they exert the same force in both directions. [6]
In the physical science of dynamics, rigid-body dynamics studies the movement of systems of interconnected bodies under the action of external forces.The assumption that the bodies are rigid (i.e. they do not deform under the action of applied forces) simplifies analysis, by reducing the parameters that describe the configuration of the system to the translation and rotation of reference ...
If and only if the original is a Class I chain (+) < (+) Both 4-bar cognates will be class I chains. If the original is a drag-link ( double crank ), both cognates will be drag links. If the original is a crank-rocker , one cognate will be a crank-rocker, and the second will be a double-rocker.
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