Trust me, there is nothing going on with "hot balloon effect" and kites. That black solar balloon is however a nice work.foilholio wrote:So I have been wondering about this for a while. It is obvious to me something is going on
Well in snow the heating should be almost double from reflected light plus cold air should heat better. I am interested in how much better a black kite heats up over other colors.Regis-de-giens wrote:I wanted Benoit Tremblay to test one of its next light weight foilkite with a black or dark color to see the impact of air warming ; My estimations were indeed in the range of 10% weight saving (*), not crucial but not negligible ; he was doubtful, so I had forwarded the above video last week to him, with (poor) hope that this could change his mind;
I think it is worth trying (for science progress at least), now that 15m kites are around 2kg. Far easier than Helium anyway . For snowkite this might be interesting as well.
(*) linked to both wind speed that cools the kite surface and fresh air flowrate by the inlets (=leak through the seams) ... so not easy to estimate accurately.
Think about this possibility foilho:foilholio wrote:No this is definitely a hot air effect EDT. I notice it with slack lines. Once a kite gets warm enough it becomes much harder to drop on slack lines. Makes surfing in light wind awesome.
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