On 24/04/2016 1:06 AM, Ross McLean wrote:
I am pretty sure that it is not actually possible to do that. You may not be aware that there is a vent built into the wing to allow air to enter the tank as the water is dumping. It is not a valve, it is an open vent. If the ballast tank is empty and there is a change of pressure in the tank then air will enter or exit via that same vent should the dump valve be closed.
Yeah, sorry. Brain fade. I keep having to remember where the damn things are located each time I do a tank test to tape them up. Mostly I work on gliders with either no water at all or bags rather than integral tanks.
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