Skyjob; many thanks for that link. I am searching for some answers to the whole brake cooling calculation and this article does not give the answers. Perhaps you, or others, can help. The TQTGW is calculated assuming brakes ON at Vref, max braking and no Rev.
So, the table QRH PI) titled Recommended Brake Cooling Schedule requires you to enter with Brakes On speed v G.Wt. This table does not mention RTO or Landing. From this tabel you find a Ref Brake Energy (per brake). Over the page and there are tables to enter with this number. What confuses me is this then compared to a degree of autobrake to find an Event Adjusted Brake Energy, and from this you find a Brake Cooling Scedule.
Back to the first step. If this is a Landing calclation, and normal 2nd detent Rev is used till 60kts, what is the Brakes On Speed to enter the table? Some people use Vref and then find they need 10mins ground cooling at a weight that is 20.000kgs less than MQTGW. This to me seems a wrong assumption. I've been trying to find what a Quick Turnround is in Time, but the whole thing seems to be based on fuse plugs blowing and not based on an RTPO after so many minutes.
What confuses me is that the Brake Energy Table does not declare the amount of braking applied, and then the following tables tell you to enter with an autobrake setting.
What I'm seeking is a 100% guaranteed authorative answer. I have enough opinions at work to sink an aircraft carrier. I'm chasing Boeing, but no replies yet.
HELP?