P6DOF Subobjects¶
A p6dof_object_type may include one or more subobjects that may represent bombs, missiles, fuel tanks, etc. Subobjects do not have an AFSIM platform until they are jettisoned. At that time, a platform will be created containing a WSF_P6DOF_MOVER and the jettisoned P6DofObject will be “injected” into the mover, automatically transferring to the platform its kinematic state. See map_p6dof_object_to_platform for more information.
- subobject <name> <derived_from_type_name> … end_subobject¶
Depending on the defining data, subobjects may effect the performance of their parent platform. For example, a bomb carried on an external pylon may produce additional drag on the parent. It is also possible for a subobject to contribute thrust forces to the parent (such as running Hound Dog missiles on a B-52 during takeoff, or having SRB thrust contribute to the total thrust of a Space Shuttle orbiter). In addition, subobjects will contribute mass properties and inertia to their parent.
A subobject is always derived from a previously defined p6dof_object_type. Although any parameter can be overridden, typical use involves setting relative positioning and separation effects for a subobject while using all other characteristics from the object type from which it was derived.
subobject missile1 AIM9L // Relative Positioning with Parent parent_rel_x ... parent_rel_y ... parent_rel_z ... parent_rel_yaw ... parent_rel_pitch ... parent_rel_roll ... // Separation Effects separation_vx ... separation_vy ... separation_vz ... separation_omega_x ... separation_omega_y ... separation_omega_z ... end_subobject
Relative Positioning with Parent¶
The following commands specify how a subobject should be positioned relative to its parent while captive.
- parent_rel_x <length-value>¶
This specifies the x-location of the object’s reference point relative to the parent’s reference point using the parent’s body coordinate system.
Default: 0.0
- parent_rel_y <length-value>¶
This specifies the y-location of the object’s reference point relative to the parent’s reference point using the parent’s body coordinate system.
Default: 0.0
- parent_rel_z <length-value>¶
This specifies the z-location of the object’s reference point relative to the parent’s reference point using the parent’s body coordinate system.
Default: 0.0
- parent_rel_yaw <angle-value>¶
This specifies the yaw of the object about its reference point relative to the parent’s body coordinate system.
Default: 0.0
- parent_rel_pitch <angle-value>¶
This specifies the pitch of the object about its reference point relative to the parent’s body coordinate system.
- parent_rel_roll <angle-value>¶
This specifies the roll of the object about its reference point relative to the parent’s body coordinate system.
Default: 0.0
Separation Effects¶
The following commands specify the perturbation that will be applied to a subobject when it is jettisoned from its parent.
- separation_vx <length-value>¶
This specifies the x-component of velocity (in parent body coordinates) that is imparted to the subobject when it separates from the parent.
Default: 0.0
- separation_vy <length-value>¶
This specifies the y-component of velocity (in parent body coordinates) that is imparted to the subobject when it separates from the parent.
Default: 0.0
- separation_vz <length-value>¶
This specifies the z-component of velocity (in parent body coordinates) that is imparted to the subobject when it separates from the parent.
Default: 0.0
- separation_omega_x <length-value>¶
This specifies the x-component of angular velocity (in subobject body coordinates) that is imparted to the subobject when it separates from the parent.
Default: 0.0
- separation_omega_y <length-value>¶
This specifies the y-component of angular velocity (in subobject body coordinates) that is imparted to the subobject when it separates from the parent.
Default: 0.0
- separation_omega_z <length-value>¶
This specifies the z-component of angular velocity (in subobject body coordinates) that is imparted to the subobject when it separates from the parent.
Default: 0.0
Return to p6dof_object_types or p6dof_object_type
