SonexBuilders.net

Hi all,

Today I took a short flight in my OneX to see what type of performance I was getting at various RPM settings. Here are my results:



These numbers should be taken with a grain of salt because each RPM segment only lasted about 2-3 minutes. I need to re-fly the test using segments lasting 10 minutes or longer to get really statistically significant values.

Context:
OneX
AeroVee 2.1, non-turbo
18'9" wing span
78.0 square foot
flight weight ~ 876 pounds
OAT ~ 43F
Altitude ~ 3,000 feet
The IAS & TAS have been accurately calibrated

Thanks for posting that. I'd love to see more numbers, and I'll gladly add mine once I have some. I only have 0.4 hrs on mine so far :-)

Rusty

Here are numbers from two longer flights flown in January. Distances flown ~ 25 miles for each flight. These numbers should be more accurate.

What kind of climb rates are you seeing?
Rusty

Climb performance numbers for my OneX N169XE. Doing those tests were fun, I should rerun them. https://jasflyer.com/OneX/OneX%20N169XE%20Climb%20Performance.pdf

Thanks for the great info Michael. I'm still very early in the test flights, and I'll resist full climb and descent testing until I get the wheel pants on, and maybe some of the cowl inlet/outlets sorted out. I remember doing those tests multiple times on an RV-8 long ago, back when I had to carry a stopwatch, and write down numbers. There's really no substitute for datalogging. On the last flight, I picked two points about 1050 ft and 3500 ft, and calculated the average climb at 1100 ft.min using 85-90 mph (unverified ASI). Note this is with a 912UL. I had done some quick tests watching the VSI while varying the climb speed, and thought 85 was about the best, though I never tried anything as low as what you're seeing as the max. Maybe I'll play with that some next time up.

Rusty