The SOAF 1-11 srs 485GDs had the power point for an electric pump to fill the water injection tank. I don't recall ever using it.
The normal procedure on take off was to use water injection if required and then at power reduction (1500ft.) select dump to discharge the remaining water in the tank overboard as it would freeze if left in the tank. I think if the flight was less than 1 hour the water could be carried to the next stop.
There was a mod available to fit a heater in the water tank but the SOAF aircraft didn't have in my time there. (76 - 79).
The water tank held 110 imp. gallons IIRC, that would last about 3 mins on take off or 5 mins with an engine failure.
I worked out the flow rates years ago and there was nearly as much water going into the engine as fuel.
Last edited by dixi188; 31st May 2021 at 19:04.