I think that high point will be in the correct place, but I'm too lazy to try to analyse it. Think of it this way. Align the diagonal rib (DR) perpendicular to the spar. The high point is the same percentage of chord as the right perpendicular rib (PR), but the rib is longer, so it measures further from the LE. As it is swung about the LE to its correct position diagonally, I think the high point comes forward to be at the same distance from the LE as the PR.
To pick the right simplex template for the DR, just divide the PR height by the DR chord to get the camber percentage. Then draw a template for that rib.
Ray
--- In Indoor_Construction_at_yahoogroups.com, Neil Dennis <wombatt@...> wrote:
>
> IMHO, if you cut a diagonal ribe and a straight rib for the same chord,
> the diagonal will be longer - therefore even tho it's the same profile
> it eill have a higher "high point' as it is longer. No question there.
>
> Now, as it is diagonal the high point will be closer to the leading edge
> that if the same length was perpendicular _BUT- will that high point
> now be at the same percent of chord as a straight ribthat that fits the
> chord ?
>
> How about them beans ???
>
> wombat
>
Received on Thu Nov 29 2012 - 18:44:32 CET
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