ORIGINAL: myring
ORIGINAL: Xairflyer
ORIGINAL: myring
I have an other idea to reduce heat on the rear bearing. Since there is a gap between the platform of turbine and the inner platform of NGV, so hot gas can intrude into the rear bearing area. We can drill some holes on the inner flange of NGV to let cooler air around the CC to push the hot gas back its original path. The cooler air has higher pressure than the gas from the NGV. Any comments about the issue?
That is a question for the guys on
www.GTBA.co.uk
What is it on the web page? I can't open it.
http://www.gtba.co.uk/gtba_forums
You need to pay for membership to access the forums. I think it's in the order of 10GBP. If you're interested in turbines it's well worth it IMO. (but I'm biased)
Heat to the rear bearings comes through via the turbine disc and the shaft. The cooling is achieved through the tunnel where fuel is dripped through the front face and travels rearwards.