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#21
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Canopy tinting
On Tuesday, April 21, 2020 at 2:52:09 AM UTC-7, wrote:
On Tuesday, April 21, 2020 at 12:50:20 AM UTC-4, 2G wrote: On Monday, April 20, 2020 at 2:26:27 AM UTC-7, wrote: On Monday, April 20, 2020 at 5:49:26 AM UTC+2, Paul wrote: Question: Is it possible to tint a canopy like a car, for example, using automotive window tinting material? I know some canopies are tinted a bluish color, but what about a dark black tint? Thanks, It's poorly advertised but Mecaplex offers an IR-blocking tint which I've ordered after some hassle. As a fraction of light blocked: Colour / Visible / IR Standard grey / 76% / 74% IR blocking grey / 77% / 47% Blue / 78% / 78% Sunlight is about 45/55 visible/IR(?), so my napkin math suggests assuming 1000W/sqm: (450 * 0.76) + (550 * 0.74) = 749W (450 * 0.77) + (550 * 0.47) = 605W - ~25% cooler than typical tinted for no loss in visibility. I don't know what fraction of either is blocked by an untinted canopy in comparison? Approximately 0% or more? You don't need an IR blocking tint as acrylic blocks UV all by itself: Some UV, not all. Acrylic blocks UV-B, so you don't get a sunburn. But it still lets significant UV-A through, which can cause deeper skin damage. Best to cover exposed areas with opaque material. UV-A is defined as wavelengths between 315 and 400nm. As can be seen from the transmission plots I provided, acrylic falls off steeply at 400nm. This blocks almost, but not, all UV-A. Tom |
#22
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Canopy tinting
On Tuesday, April 21, 2020 at 3:23:20 AM UTC-7, wrote:
You miss my point gbfwi. I said nothing about the UV protection characteristics of canopy materials. I was stating that the reason tinted canopies are sold on gliders is not to do with additional UV filtering. For that I always wear full length UV protecting clothing, hat and sun shade gloves + factor 50 when gliding. That will help you on the ground when you are not in your glider (which IS a very good idea), but is totally unnecessary while flying. Tom |
#23
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Canopy tinting
Well 2G, it would be rather inconvenient to take off the clothes I am happy with every time I get into the cockpit.
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#24
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Canopy tinting
On Wednesday, April 22, 2020 at 12:37:56 AM UTC-7, wrote:
Well 2G, it would be rather inconvenient to take off the clothes I am happy with every time I get into the cockpit. And WHY would you want to do that? |
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