/FRAME/FIX

Block Format Keyword Describes the frames.

Format

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

Definition

Field Contents SI Unit Example
frame_ID Reference frame identifier.

(Integer, maximum 10 digits)

unit_ID Unit identifier.

(Integer, maximum 10 digits)

frame_title Reference frame title.

(Character, maximum 100 characters)

Ox X coordinate of frame origin O'.

(Real)

[ m ]
Oy Y coordinate of frame origin O'.

(Real)

[ m ]
Oz Z coordinate of frame origin O'.

(Real)

[ m ]
X1 X component of frame axis Y ' .

(Real)

Y1 Y component of frame axis Y ' .

(Real)

Z1 Z component of frame axis Y ' .

(Real)

X2 X component of axis Z ' .

(Real)

Y2 Y component of axis Z ' .

(Real)

Z2 Z component of axis Z ' .

(Real)

Comments

  1. The reference frame identifier must be different from all skew identifiers.
  2. The reference frame is fixed and its directions are defined by Y ' and Z ' . Vectors of arbitrary length may be given.
  3. Input is Y ' axis and Z ' axis, but X axis is computed as:
    X = Y ' Λ Z '

    Y ' is recomputed as:

    Y = Z Λ X

    Therefore, the new reference frame is defined by X , Y , and Z ' .

    Figure 1.

    fixed_ref_frame