Rotator Vents - Re: [balloon-makers] Load Tape Color

[Jon Radowski]

On 1/23/07, private e-mail address <private e-mail address> wrote:

You want a LOT more than 18" for the overlap..  I use over 36".


For most homebuilts, one generally considers making the turning vents
two horizontal panels tall (or 10 feet). Keeping the vent width/height
ratio at least as wide as 1:4 will generally keep things happy. 30" is
a happy flap width for a ten-foot tall vent.

The STC'd Custom Nine Designs 100,000 cu. ft. 20-gore (Aerostar
S-series clone) envelope uses a 40" turning vent overlap, 10 feet tall
(giving a 1:3 width/height ratio). I've built a few of these
envelopes.

Keith - I don't remember what the exact dimension was, but looking at
pictures, LimeLight appears to have a turning vent overlap of about
30".

Here are some good pictures for reference:
http://www.njhotair.com/images/local/20021218/


Soft Landings,
Jon Radowski
--
http://www.hotair.tv
http://www.airscapedesign.com
Elverson, PA - 908-208-1869
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