On Oct 17, 10:44*am, bildan wrote:


A flash of reflected sunlight is by far the best way to see an
aircraft at long range. *. . .
I've wondered if this technology could be brought into the digital
age. *. .

snip

In a study done some years ago at the Cranfield Institute in the UK on
conspicuity schemes, one of the best was to put some highly reflective
foil - perhaps like that mentioned in an earlier post about RC models
- on the control surfaces of a glider (rudder, elevator, ailerons).
The movement of the control surfaces, far more frequent that movements
of the airframe itself, was remarkably good at alerting others of the
presence of the glider.
Jim