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Michael,
My view is that slanting a radiator does nothing better for you than one perpendicular to the air flow - except perhaps making it easier to fit a space constraint, it which case then go with a slanted radiator.
A slanted radiator (that has the same air flow and same frontal area) as a perpendicular radiator is actually added going to have a bit more drag. The air flow must now make at least one (and possibly two turns) going into and out of the core channels creating turbulence and drag at those points. NOT that it is going to make a real significant difference at the airspeeds we fly. So for that reason, a slanted radiator is certainly acceptable especially to meet installation constraints.
My 0.02
Ed
----- Original Message ----- From: "Michael Silvius" <silvius@gwi.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, May 01, 2008 8:10 PM
Subject: [FlyRotary] Re: radiator orientation?
Geroge:
In the end I will likely angle them a bit but my primary concern is if it is
ok to install these radiators in the vertical orientation. I have the space
up and down to use them this way. The nose bowl I have seems to work well
with things set up that way.
Michael
----- Original Message ----- From: "George Lendich" <lendich@optusnet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, May 01, 2008 5:50 PM
Subject: [FlyRotary] Re: radiator orientation?
> Anyonene see any issues of concern with instaling the radiators in the
> vertical orientation as oposed to their normal orientation with the
inlets
> and outlet on the top. These are evaporator cores from a JMC Jimmy-
Chevy
> Blazer
>
> Michael in Maine
Michael,
The front adds significantly to the flat plate drag and anything you can
do
to reduce that affects the total drag. Are you happy with the front width,
could it be reduced with some angle on the rads?
George ( down under)
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