The NCA requested that the system be operable from inside the cockpit. One of the reasons for this is that the helicopter might have to travel some distance before reaching the site of the spill. It’s essential that the diesel engine powering the system doesn’t run out of fuel before reaching its destination, so the system can be switched on when required from within the helicopter.
The most important factor was the safety of the helicopter and ground Crew. Plus ensuring the STRATUS system could be safely loaded and transported via a helicopter. We also needed to ensure the load would be stable and fly in the correct direction. We spoke with several helicopter operators to ensure all risks were understood and mitigated.
Once we understood the risks, we engaged with aerodynamic experts to ensure the underslung load would be predictable and behave as the pilot expected.
So far, we have designed, manufactured and supplied both 2000-litre and 1000-litre variants – both versions have undergone rigorous testing over the Moray Firth in Scotland.
Check out the video below of the STRATUS during testing.
The system has been tested with several pilots, who have all given excellent feedback, stating the system was very stable up to 90 knots both in the forward direction and during banked turns.