Originally Posted by
Jimmy.
If I'm not wrong, they ran it without both main pumps (the new system is supposed to have an emergency pump on the sump, like in the S61) for the equivalent of 500NM at 80 kts. Nice feature, but doesn't address the run dry nor the temperature increase after bypass...
this is from their website - seems to imply no oil:
Notably, both configurations will include the Phase IV main gearbox. This gearbox has been validated to exceed the requirements of CFR 29.927(c) as demonstrated by full-scale testing witnessed by the FAA. All of the primary lubrication system oil was removed prior to operating the gearbox for the equivalent of over 500 nautical miles of flight at an airspeed of 80 knots. No discernable anomalies were identified during the post-test examination.
It doesn’t expand on what ‘secondary lubrication’ might be....