Am Mittwoch, 25. Januar 2017 07:49:35 UTC+1 schrieb Ian:
On 25/01/2017 01:00, Andrzej Kobus wrote:

There was another study that I posted a link to a couple of months
ago. That study concluded that a reflective foil (mirror like) is
hugely more effective than LED lights in bright light.

The UK Military gliding group did a study into high visibility markings
years ago. They did a bunch of flight tests with motor gliders. I think
they found that most markings were not very effective, but reflective
mirror strips on the control surfaces were the most useful. As the
controls move about there is more chance of a reflection flash catching
the other pilots attention.

It was written up in Sailplane and Gliding. It would probably be worth
finding that article before you spend money on anything.

I still think that they did not ask the right question. They asked: What is the average distance at which skilled pilots detect the other traffic, and the distance varied a little bit with the methods, but was always well above the distance necessary to avoid the other traffic. They should have asked the question: How high is the likelihood that the other traffic is detected at a distance of 2 NM. And how you value the different methods might be very different when you use the second question and not the first.