Something very important when it comes to the sticks, they must never be blown with cool air, this prevents the fuel from evaporating, they have to glow and that's why I would close the holes that blow directly onto the sticks.
I compared the books by Thomas Kamps and Kurt Schreckling KJ 66 again and noticed that more air is blown into the primary part of the combustion chamber . My suggestion is to install another six sticks in the combustion chamber (current technology is 12 sticks) and adjust the injection ring, do not shorten the needles and do another test run good luck
Hi, there is no good combustion in the primary part of the combustion chamber. the reasons may be as follows. 1. The injection needles do not press against the inside of the Sticks. (on the side where the bow of the sticks is), the liquid fuel does not evaporate sufficiently. 2. the wall thickness of the sticks should not be more than 0.5 -0.3 mm. The sticks must glow in the front area. But you can only see this if the NGV blades are so narrow that you can see into the combustion chamber during operation. (you can shorten it a little later at the base). e.g. like this model builde ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-V4STtvDBVMU.html wish you every success👍
Thank you for your insight 😊 I will make sure the needles are touching the vaporizrt tubes. Maybe make a bend on the end of the injector needles also to dirct the liquid fuel onto the tube wall.
The needles can be easily bent if you heat them up to the tip after soldering them in I also have some Kamps turbine books but couldn't find this error in the information for the combustion chamber MisterG shows a video, if you compare it with yours, you can see small but perhaps significant differences. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-F-s5NDJoBtU.html e.g. your compressor diffuser blades are too thick at the beginning and the flow is limited You don't use an O-ring to seal the housing Is the turbine leaking? I check the tightness of the turbine by closing the inlet and outlet with the palms of my hands and blowing breathing air into the turbine through a hose. I achieve 0.3 to 0.4 bar on the pressure gauge, which is enough to see whether there is a leak in the housing
Thank you for your kind help 😊 I got the combustion sorted I corrected the geometry in the diffuser by milling. I did a leak-down test and found one leak. I corrected a small misalignemt between compressor and cover. I changed the needles on the injector ring. I am using teflon tape as suggested in the book for sealing. I have to order o-ring material and make a proper seal. Engine was running cool and even all the way up to rear bearing failure. Building a dynamic balancer is next on the list. Kamps Microturbine 24052024 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-3-WL2MuMREg.html
@@joemgj " I got the combustion sorted " please describe what you did exactly " new ball bearings " did you order hybrid bearings? (the turbine bearing is best without a cage) It would be great if in the next test run the camera position was like the test run "Kamps Microturbine Run 4", This gives us a view of the combustion chamber and how the combustion is going. My KJ-66 has light blue burning. Yellow flame means: oxygen deficiency. 😉
"Ich habe die Verbrennung in den Griff bekommen" bitte beschreibe was du genau gemacht hast "neue Kugellager" hast du Hybridlager bestellt? (am besten ist das Turbinenlager ohne Käfig) Es wäre super, wenn beim nächsten Testlauf die Kameraposition so wäre wie beim Testlauf "Kamps Microturbine Run 4", das gibt uns einen Einblick in den Brennraum und wie die Verbrennung abläuft. e.g. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-cksjmosD3KE.html Mein KJ-66 brennt hellblau. Gelbe Flamme bedeutet: Sauerstoffmangel.😉
-I have made a new casing now with a gasket between diffuser and casing. -I did some more work on the compressor cover to get less clearance. -injector needle tips are bent 30 degrees and touching the vaporizer tube wall. Needles are inserted approx 7-10mm into vaporizer tubes. -I have installed new SKF 608/C3 bearings. Flame is burning blue inside the combustion chamber. See my latest video. Kamps Microturbine 31052024 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-MBIZSE5xYFY.html See my latest video
