Andrews rib is a compression rib that is made with working with 2
templates and is deeper in section in middle and tapers towards the
ends where it is glued to spar. Bob DeBatty rib is a compression type
rib made undersize (same size as middle ribs and then a vertical post
glued to top surface and wire braced with an x pattern giving same
result as andrews or built up compression rib. Todays f1ds are sturdy
enoiugh to get away from all this, however I still use andrews ribs on
all ribs in my wing as this gives a stronger structure for same weight
( I try to get wings at 0.28-0.30 gm) that you can whip with a baloon
line a bit more....
Vladimir
--- In Indoor_Construction_at_yahoogroups.com, Tapio Linkosalo
<tapio.linkosalo_at_...> wrote:
>
>
>
> A few drawings in the Indoor News web page refer to "Andrew ribs" in
prop.
> What is this? A rib where the prop spar goes "through" the rib? What
is
> the advantage of such construction? Reduced drag on the undersurface?
>
>
>
> -Tapio-
>
Received on Thu Mar 27 2008 - 06:49:55 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:45 CET