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revhed
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Postby revhed » Tue Apr 21, 2015 6:25 pm
Good info was collected on PFs commercial strut length list, why not have thickness and width as well.
Width would be the chord length.
A quick online search, I could not find any more?
Manta 14 mm
Arrow 11 mm
Ketos 90 cm long, 11.5 mm
Ketos 100 cm long, 13.5 mm
R H
Last edited by
revhed on Thu Apr 23, 2015 6:16 am, edited 2 times in total.
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windmaker
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Postby windmaker » Tue Apr 21, 2015 6:45 pm
F-One 12mm in the bottom half and then tapered (thicker) to the top.
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windfreak74
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Postby windfreak74 » Tue Apr 21, 2015 8:46 pm
manta is 14.75mm thick x 116 mm chord
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zfennell
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Postby zfennell » Wed Apr 22, 2015 7:14 pm
The relevance of the strut thickness would certainly appear important if all other variables were held constant.
But, in all fairness to any particular design, you should consider the entire package.
cross-section profile
chord length
chord thickness
strut span length
wetted surface area.
?
additionally, the designer and end user would need to weigh relevant performance parameters
for instance:
drag,
lift,
stability
strength
stiffness
resonant frequency
(material properties)
cost vs time vs fun factor ?
??
pick your poison.
-bill
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revhed
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Postby revhed » Wed Apr 22, 2015 9:02 pm
zfennell wrote:The relevance of the strut thickness would certainly appear important if all other variables were held constant.
But, in all fairness to any particular design, you should consider the entire package.
cross-section profile
chord length
chord thickness
strut span length
wetted surface area.
?
additionally, the designer and end user would need to weigh relevant performance parameters
for instance:
drag,
lift,
stability
strength
stiffness
resonant frequency
(material properties)
cost vs time vs fun factor ?
??
pick your poison.
-bill
I agree, but the reason I started this thread was I found it very interesting that of the 30 or so companies offering KBHFs that only 2 offer this spec?
I would also think that a very relevant spec would be the FK24 twist and length flex test.
Thread started for a general reference info only.
R H
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Bille
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Postby Bille » Wed Apr 22, 2015 11:46 pm
zfennell wrote:The relevance of the strut thickness would certainly appear important if all other variables were held constant.
But, in all fairness to any particular design, you should consider the entire package.
cross-section profile
chord length
chord thickness
strut span length
wetted surface area.
?
...
-bill
Cord length and cord thickness , being the two most important ; just behind
the chosen airfoil !!
% cord thickness to the cord length , is almost directly correlated to how
much drag your gonna get ; with chosen airfoil kinda fine tuning that.
So --revhed-- would you mind, (editing in) the cord length on your first post ?
Bille
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revhed
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Postby revhed » Thu Apr 23, 2015 6:17 am
Bille wrote:zfennell wrote:
Cord length and cord thickness , being the two most important ; just behind
the chosen airfoil !!
% cord thickness to the cord length , is almost directly correlated to how
much drag your gonna get ; with chosen airfoil kinda fine tuning that.
Bille
R H
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