Keep in mind
The Fuel flow is 6,000 pph at Idle, and the Fuel is very cold.
The Oil Flow is what? Far far less?
The Oil side of the HE is exposed to almost static low temps, it affects the Fuel very little.
At the critical time being discussed, (FOHE plug, Face) the Hottest Oil would be most effective at melting the Ice, per AD. But remember, as I pointed out a while back, the FOHE is not intended to be an Ice melter, it is an Oil cooler. So the design of concurrent or counter is not relevant to the discussion; except insofar as an installation is now intended to accomplish that which it was not designed to do. Solving the Plug problem doesn't solve the Ice problem. Until Pipe Ice is eliminated, someone's tilting at windmills. The Trent may be taking the fall for a problem no engine was designed to function with, but happened to be more vulnerable to, (the Ice), by chance, than the other engines.
AF
Last edited by airfoilmod; 19th March 2009 at 19:27.