On Mar 3, 1:19*pm, "John T" wrote:

Try this: Take video during a flight on a clear VMC day. Maintain level
flight as absolutely as you can, then enter climbs and descents. See what
that does to your prop strobe. I suspect even slight attitude changes will
show different strobe patterns without touching engine or prop controls.

Actually, with my Sundowner, prop controls will be one less variable
in the equation. (one month down time will feel like eternity!)

The trick will be to maintain the "exact" flight "attitude" throughout
the cloud as YOU ARE RIGHT, any pitch up or pitch down will affect the
RPM as I noticed this on my ILS approaches in my Sundowner. (Video
was in a Piper).

I like to listen to the engine noise as well as watch the strobing to
associate the quality of the approach, I.E the less power changes I
hear, the more stable the approach, and strobing remains "constant"
whether it be clockwise, or counter clockwise or even standing still.

It may be that there was a pitch change in the plane that I couldn't
feel in the video that just may have existed even though I didn't feel
it in the seat of my pants (I was passenger holding the camera). Of
course in IMC, we will really never know but gauges were steady as
they can be.

Allen