Mailing List flyrotary@lancaironline.net Message #41283
From: H & J Johnson <hjjohnson@sasktel.net>
Subject: Re: [FlyRotary] Re: Cowling split design?
Date: Tue, 22 Jan 2008 14:58:47 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
There are some airframes which were split this way [for the life of
me, I can't now think of any] but another thing which isn't maybe
the best would be the connection [for conventional engines anyway]
of the air intake for the air box etc. Also, for oil changes you can
just drop the bottom cowl w/ a split cowl this 'may' not be the
case.  The 414 I fly has a full top cowl and a hinged/split bottom cowl.. this to might be an option?

Fwiw..

Jarrett

The top of the cowl are frequently used as the upper side of a cooling plenum on air cooled engines.  A seam there might make it harder to prevent pressure loss.  Esthetics might play a part, looking through the window shield no seam shows.  I can't think of any structural or aerodynamic reason - not to say there might not be some, but I can't think of one.

Ed
----- Original Message ----- From: "Phil White" <philwhite9@aol.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, January 22, 2008 2:31 PM
Subject: [FlyRotary] Cowling split design?


> Is there a reason all the cowlings I have seen are split as top and bottom > halves?  Perhaps for structural or aerodynamic pressure reasons? On a > nosewheel plane, it would seem much easier to deal with cowl removal if it > were split into left and right halves.
>
>    Inquiring minds want to know if I should rework my RV-10 cowl.
>
> Phil #40220 w/Mazda 20B - engine work
>
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