Spinner strobing as a "Bird Strike Countermeasure"

In article , says...



"Airbus" wrote in message
...
In article ,
says...


When observed directly under artifical light that "flickers", the most
obvious being a strobe light, but there are other types of artificial
lights that have flicker.

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Fine - but which ones cause you to see the propellers turning in
apparent reverse? Do you frequently operate your airplane indoors?
Propellers are usually observed in natural light, which does not flicker.
At
night, on the rare occasions where you actually see the props clearly, it
is
from the aircraft's own lighting, which is DC. I have nbever seen the
props
turning backwards on a real plane - see it frequently in movies though.
. .


Do you really think you see and visualize motion constantly. Perhaps you
should spend a little more time around and airport yourself. Many
propellers, especially the large diameter props found on radial engines,
will appear at times to be rotating slower, or backwards. It's a fainter
image than recorded on film, but the partnership of the human eye and brain
does not realize fluid motion.


Well, I must admit I don't have much experience with large radial engines.
Moreover, I accept the argument that some AC ramp lighting at night can produce
stroboscopic effects with props - I have not seen it myself, even though I
frequently fly at night, but I do accept the principle - if you get your plane
in the right position with respect to line-frequency, AC lighting at night you
should see stroboscopic effects, which will include "backwards turning"
illusdion, depending on your prop speed. So I stand corrected on this.