Punkalouver.
Re your post #49 item 1.
Engines that use water injection have a reset on the fuel control unit to put more fuel into the combustion chambers when the water is flowing, thus giving more power, whilst using the water to cool and increase the density of the incoming air.
In engines that use watermethanol mix, the water does the same thing but the methanol does the burning to provide the extra power.
If watermethanol is used in a water injection engine there will be an overheat due to the extra fuel and methanol burning.
The Paninternational BAC 1-11 accident was caused by 2 containers of jet fuel being loaded into the water tank along with 3 of water.. The fuel would have floated on top of the water so at the start of the take-off all indications would be normal. as the water was used the level in the tank dropped until the fuel was reached. This was when both engines rapidly overheated and failed.
The BAC 1-11 had only one water injection tank, (110gallons IIRC), and only one air driven pump to supply both engines.
On take-off the water injection would last for about 2 minutes.
Hope this helps.
Dixi.