/SKEW/FIX

Block Format Keyword Describes the fixed skew frames.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/SKEW/FIX/skew_ID/unit_ID
skew_title
Ox Oy Oz
X1 Y1 Z1
X2 Y2 Z2

Definition

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 ]
X1 X component of skew Y ' axis

(Real)

Y1 Y component of skew Y ' axis

(Real)

Z1 Z component of skew Y ' axis

(Real)

X2 X component of skew Z ' axis

(Real)

Y2 Y component of skew Z ' axis

(Real)

Z2 Z component of skew Z ' axis

(Real)

Comments

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

    Y ' is recomputed as:

    Y = Z Λ X

  3. The new fixed skew is defined by X , Y and Z ' .
  4. The skew origin O' is useful when defining some condition with respect to the skew in cylindrical coordinate system.
    Figure 1.

    fixed_skew_frame