Rotary Engine wrote:

SAE paper 900035

I had lost this paper in my filing system for a few years
but there is a lot of interesting stuff in it. Hopefully
Petri can look up a better copy. Mine is awful with many
pictures that are totally blacked out.

The most interesting is the lower cost hydro formed hollow
e-shaft that drastically cuts the weight.

Also there are some charts comparing charge cooling with oil cooling
pertinent to the Rotamax engine.

 > Paul Lamar

------------------------------------------------------------------------

--Original SAE paper on their website is quite good. Available  as
download and mailed.

http://www.sae.org/technical/papers/900035

Document remake is two days work - this paper is too crisp to warrant
the effort. If you wish, i can send you a copy of mine as a scanned pdf.

Cheers,

Petri

Please send the pdf Petri. Thanks you and Merry Christmas.

Paul Lamar ...No rotor no motor.

Here's a pdf (8 MB, bloated..) and text as a .txt file. Also included
couple of more important drawings as 600 dpi, 1-bit or 8-bit images.

PDF is editable, so images can be ripped out of it if you want to make a
better file.

BTW

This lightweight thing could be otherwise interesting, but on current
concept work i am after FAI records on C-1, C-1c and C-1d classes.

What will be needed is +1000 Hp, <.44 SFC and +300 TBO, on < 440 lb
package. Short speed and all climb records can be done with less, but
long flights require this all - high power, high efficiency and
mechanical reliability.


When this is a reality and installed on suitable airframe, only records
left standing are those of cargo (B-29) and distance (Rutan voyager).
(The Bear will fall with twin R26)

Actually, it would be more sportsmenslike to ask FAI to open a new class
"Rotary" between piston and turboprop.
Otherwise world records might become quite monotonous reading...

Enough groundless bragging, now back to work :)

Cheers,

Petri

Thanks for all that stuff Petri.

You will need turbo compound to see .44 BSFC with a rotary :)
Let me know have far along you get with that and I will
pop over in the summer time to take a look :)

According to Doug the Mistral turbo is ideal for turbo compound
using a Rotrex (Denmark)  gear box.