These dampers can be retrofitted to existing machines. *For more information regarding this Technical Support Package please contact Carolina Blake at cblake@mail.arc.nasa.gov

Subtle effects related to vibrational degeneracy and mass imbalance are exploited.

It has long been known that the most effective spin recovery technique for fuselage-heavy aircraft is to use the ailerons to roll the aircraft into the spin. The objective of this paper is to explore this well-known spin recovery strategy using a recently-developed integrated toolset for modeling and analysis of highly dynamic aircraft motions.