:orphan:

.. ****************************************************************************
.. CUI
..
.. The Advanced Framework for Simulation, Integration, and Modeling (AFSIM)
..
.. The use, dissemination or disclosure of data in this file is subject to
.. limitation or restriction. See accompanying README and LICENSE for details.
.. ****************************************************************************

.. _P6DOF_Environment_Support:

P6DOF Environment Support
-------------------------

P6DOF objects require several environmental components to function properly. These include atmosphere, wind, terrain, and gravity. The use of specific environmental models for P6DOF-based objects provides a means to offer higher-fidelity models for these components than may be needed by other AFSIM objects. For example, a higher-fidelity atmosphere model may provide thermodynamic parameters that support aerodynamic heating analysis, while higher-fidelity terrain models may provide friction data that differentiates between a hard surface runway, dirt, and soft grass. A higher-fidelity gravity model may include mascons or other gravitational anomalies.

.. command:: p6dof_atmosphere <filename>

   Create a P6DOF atmosphere object using the specified file. Only a single p6dof_atmosphere object should be defined for a given scenario.
   
   See :ref:`P6DOF_Atmosphere_File_Definition` for the definition of the atmosphere file format.

.. command:: p6dof_gravity  <filename>

   Create a P6DOF gravity object using the specified file. Only a single p6dof_gravity object should be defined for a given scenario.
   
   Note: The P6DOF gravity file is a pre-planned product improvement and is not yet implemented. However, the p6dof_gravity_ command should still be used, although the specified filename will currently have no effect.

.. command:: p6dof_terrain  <filename>

   Create a P6DOF terrain object using the specified file. Only a single p6dof_terrain object should be defined for a given scenario.

   See :ref:`P6DOF_Terrain_File_Definition` for the definition of the terrain file format.
   
.. command:: p6dof_wind  <filename>

   Create a P6DOF wind object using the specified file. Only a single p6dof_wind object should be defined for a given scenario.

   Note: The P6DOF wind file is a pre-planned product improvement and is not yet implemented. However, the p6dof_wind_ command should still be used, although the specified filename will currently have no effect.

Environmental component definitions are often grouped into a single file (although this is not required). The resultant **p6dof_environment.txt** file can then be brought into a scenario using an **include_once** command. In addition to the environmental commands listed above, a :command:`p6dof_integrators` command is also typically included in the file for convenience.

Return to :doc:`p6dof_object_types`