/SKEW/FIX

Block Format Keyword Describes the fixed skew frames.

Format

Field	Contents	SI Unit Example
`skew_ID`	Skew identifier This ID must be different from all frame (/FRAME/FIX) identifiers (Integer, maximum 10 digits)
`unit_ID`	Unit Identifier (Integer, maximum 10 digits)
`skew_title`	Skew title (Character, maximum 100 characters)
`Ox`	X coordinate of skew origin O' (Real)	$[m]$
`Oy`	Y coordinate of skew origin O' (Real)	$[m]$
`Oz`	Z coordinate of skew origin O' (Real)	$[m]$
`X`₁	X component of skew $Y'$ axis (Real)
`Y`₁	Y component of skew $Y'$ axis (Real)
`Z`₁	Z component of skew $Y'$ axis (Real)
`X`₂	X component of skew $Z'$ axis (Real)
`Y`₂	Y component of skew $Z'$ axis (Real)
`Z`₂	Z component of skew $Z'$ axis (Real)

For fixed skews, the skew system is fixed and is defined by $Y'$ and $Z'$ . Vectors of arbitrary length may be given.
For a fixed skew, inputs are $Y'$ axis and $Z'$ axis, but $X^{'}$ axis is computed as: (1)
$X^{'} = Y' Λ Z'$

$Y'$ is recomputed as: (2)
$Y^{″} = Z^{'} Λ X^{'}$
The new fixed skew is defined by $X^{'}$ , $Y^{″}$ and $Z'$ .
The skew origin O' is useful when defining some condition with respect to the skew in cylindrical coordinate system.

Figure 1.