ForceEvaluator Properties 
The ForceEvaluator type exposes the following members.
Name  Description  

AvailabilityIntervals 
Gets a TimeIntervalCollection over which data is available.
If the availability interval is infinite, this returns
Infinite.
(Inherited from EvaluatorT.)  
DefinedIn 
Gets the Axes in which this force is defined. While a Newtonian force is only valid
in an inertial frame, the coordinates in which this force is defined may be a fixed frame. If so,
the torque should be rotated to transform the torque into a common Axes considered to be
'inertial' before applying them in equations of motion.
 
Group 
Gets the group that contains this evaluator.
(Inherited from EvaluatorT.)  
IsThreadSafe 
Gets a value indicating whether the methods on this instance are safe to call from
multiple threads simultaneously.
(Inherited from EvaluatorT.)  
IsTimeVarying 
Gets a value indicating whether or not the value of this evaluator changes with time. If
, the evaluator is assumed to return the same value for any
input JulianDate.
(Inherited from EvaluatorT.)  
Kind 
Gets the kind of force this evaluator represents. In particular, it indicates
whether the mass of the object on which the force will be applied is already included
in the result ("specific" force).
 
Role 
Gets the role that this force plays in a combined resultant force. In particular, it indicates
whether this force is dominant and easy to compute or whether it is a small perturbation that
is expensive to compute.
