/SKEW/MOV2

Block Format Keyword Describes a moving local coordinate system.

Format

Field	Contents	SI Unit Example
`skew_ID`	Skew identifier (Integer, maximum 10 digits)
`skew_title`	Skew title (Character, maximum 100 characters)
`node_ID`₁	Node identifier `N`₁ (Integer)
`node_ID`₂	Node identifier `N`₂ (Integer)
`node_ID`₃	Node identifier `N`₃ (Integer)

Moving skew defines a local coordinate system, defined by three nodes. At each time, the actual orientation of the skew is recalculated according to the actual position of these nodes.
In 3D, the skew is defined as:
node_ID₁ and node_ID₂ define $Z'$

node_ID₁ and node_ID₃ define $X "$
(1)
$Y' = Z^{'} Λ X "$
(2)
$X' = Y' Λ Z'$
When defining some conditions with respect to the skew in cylindrical coordinate system, the axis of the cylindrical coordinate system is assumed to pass through node N₁.

Figure 1.