JayS wrote:Thats not combustor outlet temperature. It perhaps is max temperature inside the combustor (flame temperature). There would be a pocket of very high temperature region, surrounded by cold air which keeps the combustor from melting. Max TET for Kaveri is always mentioned as 1700K.
i did not understand what is the use of giving temperature in primary zone flame tip? other than fancy showoff to mango people to tell them how difficult it is.... it is of no use and can never be measured accurately ( we can calculated based on chemical kinetics theory).
JayS wrote:Change the PRs and see what happens. No need to change TET. FPR 3.4 and HPCPR = 6.4.
as of now the excel is designed for FPR and OPR. i do not know how to use HPCR to calculate OPR. let me look into it if i get time.
But you mentioned something which I have been trying to find.
Lifing numbers. Do tell us what all you know, if you think its appropriate to share. I would be very interested to know module wise life in hours/cycles.
there is nothing to hide as i do not work for any R&D labs. the general life numbers are
minimum design life/inspection interval for
a) cold parts : 8600 cycles
b) hot parts : 4300 cycles
c) A/B parts: 2100 cycles
d) creep life is normally around 800 hrs
d) accessories need 4000 hrs of life.
these are generic numbers and not specific to any engine. However they give us ball park numbers of what it is designed for.