http://www.yiyinet.com/iltth/irin1.jpg

can anyone identify who makes this plane or what model it is?

might have better luck asking about that plane over on the pattern forums.

what are pattern aircraft. or is it a style of flying?

Pattern is a type of acrobatic competition. The airplanes are built to fly smooth and track well in the air. The planes are stable in the sense that they have a "locked in" feel, and go where you point them, no matter where you point them.

However, they don't self-right at all, you have to do everything. And they tend to fly a lot faster than your typical first or second plane, though some can make reasonable second planes.

it's extreme precision flying, with planes appearing like the one in that picture.

http://www.rcuniverse.com/forum/forumid_101/tt.htm