Guidance Models

[DominicDirkx]

As discussed during the meeting on 03-06-2016, one of the main developments that is needed for Tudat is the a clear (but at first barebones) interfaces for guidance of different aspects of a vehicle's dynamics. These aspects include entry attitude, control surface deflection, thrust pointing/magnitude etc.

My proposal would be to make the guidance interfaces independent from any particular implementation of a guidance algorithm, as is now the case for entry attitude guidance (see AerodynamicAngleCalculator class).

Also, I think the interfaces for guidance of different aspects of a vehicle should be implemented separately, without hardcoded links. Nevertheless, the inclusion of specific wrapper classes for guidance (such as that in the https://github.com/DominicDirkx/tudat/tree/PropagatorsWithGuidanceInterface branch) are a good possibility to enhance user-friendliness.

[DominicDirkx]

A first iteration of both aerodynamic and thrust guidance is not incorporated into the code. Documentation on tudat.tudelft.nl, as well as in-code Doxygen documentation.