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Jansen's linkage bears artistic as well as mechanical merit for its simulation of organic walking motion using a simple rotary input. [2] These leg mechanisms have applications in mobile robotics and in gait analysis. [3] [4] The central 'crank' link moves in circles as it is actuated by a rotary actuator such as an electric motor.
In mechanics, a six-bar linkage is a mechanism with one degree of freedom that is constructed from six links and seven joints. [1] An example is the Klann linkage used to drive the legs of a walking machine. In general, each joint of a linkage connects two links, and a binary link supports two joints.
The 3–3–5 defense can also be referred to as the 3–3 stack or the spread defense. It is one form of the nickel defense, a generic term for a formation with five defensive backs. Veteran college football defensive coordinator Joe Lee Dunn is widely credited with being the main innovator of the 3–3–5 scheme. [1]
The second significant version of the 5–2 defense is the 5–2 defense that Bud Wilkinson developed while he was a head coach at Oklahoma. The latter defense, also called the 5–2 Oklahoma, is supposed to have arisen from Bud's exposure to Earle Neale's 5–2 defense in a College All-Star game after the Philadelphia Eagles' first ...
The Desargues graph is the Levi graph of the Desargues configuration, composed of 10 points and 10 lines. There are 3 points on each line, and 3 lines passing through each point. The Desargues graph can also be viewed as the generalized Petersen graph G(10,3) or the bipartite Kneser graph with parameters 5,2. It is 3-regular with 20 vertices.
The coupler (link 3) point stays within 1% positional tolerance while intersecting the ideal straight line 6 times. The linkage was first shown in Paris on the Exposition Universelle (1878) as "The Plantigrade Machine". [5] [3] The Chebyshev Lambda Linkage is a cognate linkage of the Chebyshev linkage.
The 5–3 was regarded as a pass defense, the 6–2 the run defense. [4] The usage of the 5–3 defense accelerated as the T formation became more popular and more effective. [5] Dana Bible, in his 1947 coaching tome, called it the best defense against the T formation. [6] By 1950, the base defenses in the NFL were all five man line defenses ...
[1] [2] The focus is to cause opponents to make mistakes, even if the defense might give up a big gain or two. [3] Compared to older 4–3 defenses, such as Tom Landry's 4–3 inside, the defensive line assignments are simpler. Linemen don't read then react, they act then read. Linebackers fill the gaps the linemen leave behind, ignoring gaps ...