Originally Posted by
Tickle
Do both engines power a common gearbox to keep both props turning if one engine fails? Does the wing take over the load for gliding if both props stop? I wonder if these things have been tested if so.
Yes, like the V-22, both prop rotor gearboxes are shafted together to allow a single engine to power both rotors in the event of a failure.
Additionally, unlike the V-22 that needed to compromise rotor diameter to fit on the deck of an aircraft carrier folded, the 609 rotors are large enough to provide capability for auto rotation all the way to the ground safely.