Heteroclinic chaos and its local suppression in attitude dynamics of an asymmetrical dual-spin spacecraft and gyrostat-satellites. The Part II—The heteroclinic chaos investigation

•New generalized models are obtained for the dual-spin spacecraft with the constructional/mass-inertia asymmetry.•New action-angle-solutions for the heteroclinic case of the dynamics are found.•The Melnikow–Wiggins formalism was used for the heteroclinic chaos analysis in the Hamiltonian and non-Hamiltonian cases of the perturbations; the problems of the Melnikov–Wiggins methodology are indicated.•Chaos suppression techniques are considered and new heteroclinic chaos suppressing schemes are suggested.

Chaotic dynamics of the dual-spin spacecraft (DSSC) and gyrostats-satellites is analyzed at the presence of the constructional asymmetry and at the action of the internal/external perturbations, including the friction between the coaxial DSSC bodies, electromotors’ torques applied to the rotor-body from the platform-body by internal engines, the counterelectromotive forces/torques in internal engines, internal plyharmonic disturbances and external magnetic perturbations. The heteroclinic chaos suppression tasks are considered basing on the Melnikov–Wiggins formalism. Some alternative chaos suppressing techniques are described.