On Wednesday, December 14, 2016 at 7:11:20 PM UTC-5, Tango Eight wrote:
On Wednesday, December 14, 2016 at 5:31:25 PM UTC-5, Andrzej Kobus wrote:
On Wednesday, December 14, 2016 at 4:09:10 PM UTC-5, Tango Eight wrote:
The Cree XML T6 LED is used in many currently available "bright lights".

http://www.cree.com/~/media/Files/Cr...g/XLampXML.pdf

About 1000 lm ea at max power. There are many bike lights available that use 2 or more of these, and they are great for seeing where you are going (about like a single car headlight), most have a flash mode for daytime.. I have one that's typical of the breed.

None of these are going to be useful for blue sky collision avoidance in aviation. Bright as they are, they simply aren't bright enough.

Medium and high intensity obstruction lighting strobes give some indication of what it takes to be clearly visible on bright days at aviation-useful distance.

For instance:

http://www.flightlight.com/airportli...2.3/5.2.3.html

best,

Evan Ludeman / T8

Before ordering my newest glider (delivered in 2016) I asked quite a few European pilots about usefulness of Schleicher's strobe lights. I got universal thumb down.
As a result my glider has ADS-B in and out instead as well as PowerFlarm. I might add 3M reflective tape to some surfaces to reflect sun. This is a much better solution than low intensity strobe light.
Some glider pilots in Europe use this type of reflective tape ("mirror tape"). I saw it available at one of the European gliding stores online. I need to find it again and order it before spring. DG website has an article about this solution; a summary of a study by a University in Europe, if I remember correctly. It was a good read.

Mirror tape is an interesting idea -- you can get that at Uline for example.

Or just stick this on your tail bolt http://tinyurl.com/js3ye33

:-)

Evan

Yes, for Christmas it would work well in a hangar instead of a tree.