Hello, I am a pilot student. I have purchased experimental UL airplane and experience issues with the poor engine cooling. I've found an article recently, but I am not allowed to link it here (please search it in google, it is the first link - published on kitplanes):
www.kitplanes.com/cooling-inlets-part-2/ and I am wondering if it describes my problem, because I am affraid it does.
My plane has cooling inlets on the sides of cowling, which, according to the article, is the worst possible placement. I will repeat related paragraph below and attach picture of my plane. There are two radiators on the sides, one for motor block, second for turbo intercooler. The air outlet is at the bottom - bottom cover (not installed on 1st picture) ends some distance before and below the cabin floor.
Can somebody help?
It’s also important to avoid placing inlets in areas where the flow is moving fast and the air pressure is low. A particularly poor place to locate an inlet is on the sides of the cowling, particularly in the forward half of the side of the cowling. This is a natural low-pressure zone, and the inlet will have to capture fast-moving air and use the momentum of that fast-moving air to force it down the inlet. There is no easy way to slow the air down efficiently once it passes into the inlet, so a side-mounted inlet is likely to have poor flow and low pressure recovery. In some cases, the external air pressure is low enough that the inlet cannot recover enough ram pressure to drive the air into the duct, and it’s not uncommon to have poorly placed inlets flow backward if they are in a low enough pressure zone.
Now I don't know how to attach the picture, because they seem to change into hyperlink and I am not allowed to use hyperlinks as a new member here :-(
Well it is Yetti j-03, this airplane:
http://www.aerohangar.cz/ultralight/...tti-j-03-120hp I hope this will be allowed to post here (?)