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Old 06-15-2015, 07:02 PM   #26 (permalink)
aerohead
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a tuft day

On the way to do Ecomodder on Saturday I hit a local Habitat for Humanity store and got a bag of yarn and some large kitchen spoons/ladles.
With some blue tape I got some tufts on the new mirror stalk and housing to look at on the 100-miler west that afternoon.
12-inchers immediately knitted themselves into a web of chaos behind the mirror.I shortened them to 6-inches and they still wanted to congregate in the wake.I clipped 'em down to 4-inches which prevented entanglement.
As I drove,I reached out the window with the spoon and ladle,both as parachutes and reversed open back forms.
As parachutes they bent the handles back remarkably unless I came within about 4-inches of the mirror glass,then they'd get sucked into the wake vacuum.
With the 'soft' face forward they were easier to handle and were also 'sucked' into the mirror wake.
Only a single tuft,mounted about midway to the mirror remained flying rearwards.This is good news,as it suggests that the mirror disruption is isolated away from the T-100's side.
The next look will be with some sort of additional streamlining to the housing and stalk.
For the stalk I'll use the center profile from this table

For the housing I'll use something like the leading edge portion of this wing section to get parallel flow established at the mirror glass,then a bit of boat-tailed box-cavity behind it.
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Last edited by aerohead; 06-15-2015 at 07:03 PM.. Reason: add image
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