Bill Freeman wrote:

There are two types of under-cowl radiation shields
that I have used.  First is a layer of 1/8" fiberfrax
insulation covered with a layer of super heavy duty
aluminum foil (roasting foil?).   Seal and adhere with
high temp silicone RTV, directly on the cowling to
avoid paint blistering and damage.  Alum foil for
low absorptivity and insulation to help keep the
fiberglass cool.

Also, bolted-on heat shields to prevent radiation from
hot exhaust from impinging on heat-sensitive items.
Protected engine mount tubes and intake rubber sleeves
on C182 with aluminum shields floating between hot
exhaust system and the part.  Works fine.

Bill

The Aircraft Rotary Engine Newsletter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org