Missile DATCOM FinSet

Structure for the constraint tuple = ("FinSet Name", "Value"). "Constraint Name" defines the reference name for the constraint being specified. The "Value" can either be a JSON String dictionary (see Section JSON String Dictionary) or a single string keyword (see Section keyStringFinSet).

JSON String Dictionary

If "Value" is JSON string dictionary (eg. "Value" = {"Translation": "free", "Rotation":"free"}) the following keywords ( = default values) may be used:

• SecNACA = ""
  Airfoil section type for the FinSet.
  For NACA, the full NACA control card should be specifed (without the FinSet index), e.g.:
  SecTyp = "NACA-4-0012"
  for a NACA 4-series airfoil. See the Missile Datcom NACA Control Card documentation for more info.

• phif = <from geometry by default>
  List of roll angle of each fin measured clockwise from top vertical center looking forward.
  This overrides values otherwise computed from the geometry.
  Note: If both phif and gam are specified they must be of the same length.

• gam = <from geometry by default>
  List of roll angle of each fin measured clockwise from top vertical center looking forward This overrides values otherwise computed from the geometry.
  Note: If both phif and gam are specified they must be of the same length.

• nvor = 1
  Number of vortices shed from each panel, up to a maximum of 20