I need to know the name of that metal sheet covering the front of the engine in small Cessnas (specifically the Cessna 182), just behind the propeller. I mean the one where the cowl plugs are put into:
The forwardmost part of the cowling is called the Nose Bowl. On most modern airplanes it's made of fiberglass, and attached to the adjacent aluminum of the main cowling with rivets designed for composite to aluminum joints.
On most planes the nose bowl is split in two along with the rest of the cowling, so the upper half is part of the top cowl and the lower half part of the lower cowl. A lot of older airplanes have one piece nose bowls that attach to the main cowl with screws, and you had to remove the propeller to remove the nose bowl itself.
mkey on your keyboard :) Also do you have a photo perhaps? Did you mean cowl flaps? $\endgroup$