Thread: Spinner strobing as a "Bird Strike Countermeasure"
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Old December 3rd 07, 10:12 PM posted to rec.aviation.piloting,rec.aviation.homebuilt
Bill Daniels
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Posts: 687
Default Spinner strobing as a "Bird Strike Countermeasure"

"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.

--


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.
. .


Apparently, you aren't familiar with the trick of calibrating your
tachometer with the 120Hz flickering of mercury or sodium ramp lights.

Bill D