I wrote a script to parse through most of my Phase 1 data, find periods of unaccelerated flight and plot points showing engine RPM, IAS, and climb rate.
The data is very raw and I made it many years ago. It includes the full range of weights. A huge range of altitudes, etc. I'm hesitant to share it because of these caveats, but I like it because it shows a range of possible values with little room for exaggeration.
I've overlaid some glide ratios on my old plot. Notice how they compare to the blue points at idle. On my airplane, 11:1 would be an outlier. There's a pretty dense set of points on the 9:1 line probably from most of my glide testing and power off landings at <3500 feet. If you adjust IAS to TAS, these points probably move right a bit possibly to 9.5:1 or so. It's likely the lower blue points are from long descents from high altitudes and should have significant higher true airspeed, so I think they can be ignored.
- climb_rate_vs_ias_with_glide_ratio_60.png (91.97 KiB) Viewed 1700 times