tassa Posted December 23, 2011 Share Posted December 23, 2011 hi i have one thing about torching in flight is t normal issue some gays said inside lail pipe is normal but no reference manual only by experience.what is solution so...fuel nozzles...octan fuel...i dont know were to start Quote Link to comment Share on other sites More sharing options...
pjvr99 Posted December 24, 2011 Share Posted December 24, 2011 No torching, not even at take off. It means you're about to lose a turbine. Causes could be coked fuel nozzles, damaged combustion cans, damaged IGV's Borescope is always a good place to start ....... Quote Link to comment Share on other sites More sharing options...
larry myers Posted December 24, 2011 Share Posted December 24, 2011 Agree. pjve99 is right on. Follow his suggestion. The situation you discribe is serious. My guess, this engine could be very likely close to failure as a result of turbine shellout. The only time torching should be observed is at lightoff with enrichment on, and then only in the tailpipe. Sometimes torch will be a little longer on number three engine when starting off GTC air. Quote Link to comment Share on other sites More sharing options...
RRR Posted January 5, 2012 Share Posted January 5, 2012 Tassa, Is your issue torching or sparks in the tailpipe at night? It is common to see a red glow or "white sparks" in the tailpipe at night especially during high power operation and is not reason for alarm. The white sparks are caused by fuel by products (carbon) breaking loose from the combustion liners. Torching inflight is alarming and is indicative of a fuel nozzle issue. If the condition of the fuel nozzle is bad enough and goes untreated it can cause downstream burning which can result in a catastrophic turbine failure. I recommend you inspect your thermocouples, fuel nozzles and borescope your turbine paying attention not only to the first stage turbine vane (nozzles) but also try to get a view of the second stage. This is difficult on the T56 engine. Note: If it is determined that one or more fuel nozzles is clogged and you suspect downstream burning has occurred replace the discontinue use of the turbine rotor and send it to an authorized maintenance center. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.