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Date: Tue, 15 Jan 2008 21:46:04 -0600
From: David Staten <Dastaten@earthlink.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Off Topic-RA5C Vigilante question
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http://www.vectorsite.net/ava5.html

is the VERY FIRST google article I came across regarding "North American 
RA5C control system"

Note the following passage from that page.

The aircraft achieved good low-speed landing performance through the use 
of large flaps. The ailerons were eliminated to make room for the flaps, 
with roll control provided by differential movement of the tailplanes 
and an innovative scheme of spoilers. There were three spoilers on each 
wing, just forward of the rear flight control surfaces; there were 
actually spoilers on each surface of the wing, with a spoiler on one 
surface hinged at the front matched to a spoiler on the other hinged at 
the rear. When a spoiler was deployed, it formed a "vent" of sorts 
through the wing. The two topside inboard spoilers were hinged at the 
front, while the topside outboard spoiler was hinged at the rear. A 
"boundary layer control (BLC)" scheme was incorporated, in which air 
bled from the engines was automatically blown over the flaps when they 
were extended, in order to lower landing speed.


DLOMHEIM@aol.com wrote:
> Last year I was on the aircraft carrier Midway at San Diego and at the 
> tail they had an old North American RA5C.  As I checked it out a 
> discovered that it had a slot in both wings just inboard from the wing 
> fold that allowed air to move from the top of the wing to the 
> bottom...presumably in a landing configuration.  Does anyone by chance 
> know why it was needed or when used?
>  
> Thanks.
>  
> dl
>
>
>
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