By the Numbers: How I Land my EDF Jet (and avoid the danger zones) Part 2
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- Опубліковано 10 бер 2023
- Six part series on landing an EDF Jet:
Part 1: Aircraft Setup
Part 2: Stalls and Recovery
Part 3: Slow Flight
Part 4: Landing Pattern
Part 5: Glideslope
Part 6: Landing Practice
Starring my Freewing Avanti S 80mm EDF Jet:
AUW: 6.66 lbs (3.02 kg)
Wing Area: 430 sq. in. (27.74 dm^2)
Wing Loading: 36 oz/sf (109 g/dm^2)
Wing Cube Loading: 21
(WCL explanation and calculator: www.rccad2vr.com/aeronautics/...)
Control Surface Settings:
Ailerons: +/-15 mm (Normal); +/-5 mm (Landing)
Elevator: +/-17 mm (Normal); +/-10 mm (Landing)
Rudder: +/-28 mm (Normal); +/-20 mm (Landing)
Flaps: 23 mm (Takeoff/Half); 45 mm (Full)
On-board Electronics:
Receiver with built-in stabilization
Telemetry:
Voltage Sensor
Airspeed Sensor
Variometer
Scorpion Backup Guard II:
www.scorpionsystem.com/catalo...
Backup Battery: 2s 75C LiPo, 650 mAh (overkill - 350 is plenty)
Main Battery: 6s 30C Lipo, 6000 mAh
Spalart quote found here:
Doug McLean | Common Misconceptions in Aerodynamics
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Aerodynamics - a quick review by DarkAero:
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NACA Report 668: Wind Tunnel Investigation of NACA 23012, 23021 and 23030 Airfoils with Various Sizes of Split Flap:
ntrs.nasa.gov/api/citations/1...
Thrust vs Power and Best Angle of Climb vs Best Rate of Climb:
severevfr.com/aerodynamics/be...
FAA Aviation Safety: Stabilized approach and Landing:
www.faa.gov/sites/faa.gov/fil...
FAA Airplane Flying Handbook, Approaches and Landings:
www.faa.gov/regulations_polic...
AOPA article on energy management:www.aopa.org/news-and-media/a...
New Zealand Dept of Conservation Live Cam video of Albatross Landing:
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Sam was a certified flight instructor with a multi-engine commercial pilot’s license. Sadly, he was killed in a motorcycle accident in 2018.
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My Avanti in a secondary stall:
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• Video
Freewing AL37 crash Video (example of down aileron initiating an asymmetric stall):
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F104 Starfighter - Aerodynamic braking on landing at Jet Power 2019:
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F104 Starfighter - Wingtip vortices at Airworld 2015:
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Airbus A380 Emirates RC airliner by Ramy RC:
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I bought the Avanti thinking it would be an easy plane to land. The sport jet airframe is quite a different animal from the delta and swept wing edf fighter jets I'm used to flying. I learned quickly I was unable to land my Avanti in a nose up attitude without stalling it. Conversely, a nose down attitude creating the nose wheel to touch first mafe my plane hop back up into the air, sometimes into a bouncing oscillation that again occasionally ended in a stall. I watch others land these Avantis all day with little ore no issues. This plane has become the bane of my successful EDF jet landings. But I haven't given up yet.
Another masterfully done video! Great explanation with fantastic visual aids 👍
Thanks!
Now I know why my plane simply drops from the sky
Absolutely fantastic. Thanks for the info!!
Thank you!
Your videos are a master class.
Thank you! Appreciate the comment.
Excellent video with lots of good information! I mean . . . really good.
Much appreciated! Thank you.
this video is relly good it hit my feed just at the right time i just boutgh a viper 90 leaving the beech craft d18 thank you
Thanks! Have fun with the Viper!
Another excellent video!
Thank you!
Really nice and useful. Thanks!
Thanks for stopping by. Glad to hear that.
Nicely explained! I hope more real life and rc pilots watch this video!
Thank you! I really appreciate that.
Amazing, great info 👍👍
Thank you!
A very nice explanation of stalls.
You obviously have some professional knowledge/training in stalls because I noticed that you completely ignored the RC pilot mythological “tip stall”.
Well done.
Thanks. I earned my wings from the Navy as an NFO and also practiced stalls while working on a private pilot's license. But that was a lifetime ago! A lot of research went into this series to make sure the information was up to date.
Nice Greg 😊😊
Thanks!
Hit final full flaps, cut power glide it in grease every time
The “No Smoking/Fasten Seat Belts” at 18:40 had me 💀🤪
Thanks for noticing!
you can just slip if you need to slow down more
That's right! One of my favorite memories landing my 104" Extra 300 was on it's maiden flight. The motor throttled down on its own during the flight (due to ESC programming error on my part), but I thought there was a serious issue, so I shut it down and lined up for a power off landing. On final I realized I was high and fast, but I was already committed to the landing. My IMAC mentor said, "Slip it!" I rolled it into a forward slip, holding opposite rudder until I bled off the extra speed, then straightened out just as I reached the runway threshold. I was able to make a normal landing, and came to a stop midway down the runway.