It is not so much a question of temperature as it is of differential

expansion.

If one part of the muffler is real hot and another cooler that causes
thermal induced stress. Without sophisticated FEA computer programs it is

very

hard to predict what will happen. That is why you need to test it

extensively

before you use it to supply heated air to the cockpit. Also the rotary

puts out

these supersonic shock waves that tend to destroy exhaust systems.

The bottom line is it is very dangerous to use this for cockpit heat.

BTW I think you can make it live longer by putting a slip joint in the aft
bulkhead where the cool tube goes through it. that should allow the center
tube to expand and contract independently of the housing.

Paul Lamar

why not use water heater with a water cooled engine?

Bill Schertz
KIS Cruiser # 4045

 
The Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2004 All world wide rights reserved.