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03-15-2020, 06:47 PM   #28156
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QuoteOriginally posted by volley Quote
These turbines may look huge, but with a rating of 1.5MW they are actually quite small by today's standards. They are located just a little more than 1 km away from my house
In the last couple of years I was involved in some engineering activities for turbines between 5MW and 10MW ... these are real "monsters" in comparison. K1 and SMC A* 2.8/200
Under the category of "never thought about that" is the wear on the leading edge of the blades which limits their usable life, and consequently the cost and problems of replacing the blades. Then there is the problem of what to do with one that is worn out as I gather there is no reasonable way to repair and refurbish defunct rotor blades or recycle parts from them. If I am misinformed or out of date I'd love to hear about it.

03-15-2020, 08:09 PM - 9 Likes   #28157
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A few poses of an Osprey enjoying a snack.
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03-16-2020, 03:19 AM - 12 Likes   #28158
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03-16-2020, 07:40 AM - 4 Likes   #28159
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My Bovine Neighbors
The white-faced one in the background gets a little wonky at times, but the rest of the girls are usually passively curious when we walk by. This sharpness in this shot impressed me quite a bit, this was taken with a lens from the 1970s.
Fabulous Newton County Arkansas.
Pentax K-1 mII Ltd Silver, K105f2.8

03-16-2020, 08:29 AM - 3 Likes   #28160
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K-1 & DFA100WR, 5:7 crop
03-16-2020, 11:35 AM - 4 Likes   #28161
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FF Mode • 100 ISO • Soligor C/D Wide-Auto 20mm f:2.8


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03-16-2020, 12:18 PM - 4 Likes   #28162
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K1 with the Samyang/Rokinon 85mm f/1.4 probably stopped down to f/2.8. Straight from the camera. Window light on one side, small Viltrox LED panel on the right. I wanted that "spill" from hot lights.

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03-16-2020, 12:24 PM - 1 Like   #28163
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QuoteOriginally posted by WPRESTO Quote
Under the category of "never thought about that" is the wear on the leading edge of the blades which limits their usable life, and consequently the cost and problems of replacing the blades. Then there is the problem of what to do with one that is worn out as I gather there is no reasonable way to repair and refurbish defunct rotor blades or recycle parts from them. If I am misinformed or out of date I'd love to hear about it.
As far as I know there are several research project going on how to recycle the old blades. And, although this is a different (but somehow related) question, much work is done right now how to design the units more maintenance and repair friendly. A failure of the main shaft bearing in an offshore turbine can easily cost between 1 and 2 mio USD. Not because that bearing would be so expensive, but it can't be replaced or repaired up-tower (until now, but this may change with a new generation of bearing designs). You need to hire a very expensive heavy lift ship which will exchange the complete nacelle.

But as you can see, some level of maintenance and repair on the blades is possible ... interesting place to work

... and sorry, but this shot was taken long before the K1 existed ... taken with the K200D


Last edited by volley; 03-16-2020 at 12:34 PM.
03-16-2020, 01:03 PM   #28164
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QuoteOriginally posted by volley Quote
As far as I know there are several research project going on how to recycle the old blades. And, although this is a different (but somehow related) question, much work is done right now how to design the units more maintenance and repair friendly. A failure of the main shaft bearing in an offshore turbine can easily cost between 1 and 2 mio USD. Not because that bearing would be so expensive, but it can't be replaced or repaired up-tower (until now, but this may change with a new generation of bearing designs). You need to hire a very expensive heavy lift ship which will exchange the complete nacelle.

But as you can see, some level of maintenance and repair on the blades is possible ... interesting place to work

... and sorry, but this shot was taken long before the K1 existed ... taken with the K200D
Working on the turbines on site reminds me of pictures of steel workers sitting for lunch on an I-beam high above NYC. Also of a story during construction of the Brooklyn Bridge of a sailor who went out on the single strand of the main support cable on a mission of some sort, then returned sometimes hanging under the cable by his hands and swinging along Tarzan-style. NOT for me, I have no tolerance for heights. BTW: two good movies for scary but funny sequences high on buildings: 1) the classic silent "Safety Last." and 2) a trivial Disney low-budget movie called "No Deposit, No Return." In the latter, Don Knotts somehow gets a bucket stuck on his head and wanders out onto the steel framework of a high-rise that's under construction. The rest of the movie is forgettable, but that sequence is worth watching.
03-16-2020, 03:17 PM - 7 Likes   #28165
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K 1 + HD DA 55-300 ED WR

03-16-2020, 04:48 PM - 4 Likes   #28166
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I haven't posted a K1 image from our Utah trip for some time, Zion Park if you don't recognize it.
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03-16-2020, 06:35 PM - 8 Likes   #28167
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Another sample of the K1 with the Samyang/Rokinon 85mm F/1.4 shot at F/1.4. Respectable DoF and fall off I think. As-is straight out of the camera
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03-16-2020, 09:05 PM - 6 Likes   #28168
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Layers of Petals

03-16-2020, 09:15 PM - 4 Likes   #28169
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fa43....k-1.....x posted where relevant

03-17-2020, 07:13 AM - 5 Likes   #28170
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Zion NP again. Processed a few more while going through those files.
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