OneX performance numbers

[XenosN42]

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

[13brv3]

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

[XenosN42]

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

[13brv3]

What kind of climb rates are you seeing?
Rusty

[XenosN42]

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

[13brv3]

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