Subject: Exit Air
From: Rotary Engine
Date: 12/25/2008, 10:55 PM
To: AAA Put this in the To box



    Paul and All

    I just found this shot of what I think is a Nemesis NXT.
    I think this aircraft was designed for speed and more speed.
    Can anyone comment on the design and is there other photo's of cowl
    flaps
    etc. I thought the exit air would be pointed back rather than down!!??

    Steve Izett
    Perth WA

    They rarely use cowl flaps on racing planes as they take off and
    climb out
    at a shallow angle and at less then full power. Here are some more
    shots from my
    collection. Since there is so  much stuff crammed in the cowl the
    cooling
    drag is probably higher than it need be.

    Paul Lamar



Thanks Paul.

What is the recess in the bottom of the cowl between the inlet air to
engine 塑・瘢雹tube and the cowl exit holes in the photo Inside-bottom-cowl.jpg.

Steve Izett

I think that was the oil cooler installation.
Piston engines do not require as much oil cooling as rotaries
as the piston is cooled somewhat more on the intake stroke compared
to a rotary.

Paul Lamar


Paul,

I think I remember you had a picture that showed the air exiting around
the exhaust stacks only.  A small area indeed.  It makes me wonder where
air is leaking out on your C-182 when you close the cowl flap
completely.  Probably the answer is every where:)

Seasons greetings from Nepal

Doug

Are you off to Nepal this year?

Paul Lamar

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