My Longest RC Airplane Flight

RC fans
21 followers
29 Video Views·Oct 9, 2022
I think this is the record for the longest battery only electric RC airplane flight, excluding the use of fuel, solar cells, or slope soaring. I am happy to answer your questions in the comments section.
10 hours and 45 minutes
340 miles or 547km across the ground
Phoenix 2400
Matek F405 Wing with Arduplane code
12x12 APC propeller
Racerstar 4108 600KV motor
Turnigy Plush-32 30A ESC (LVC disabled)
50,000 mAh 4s Li-Ion battery pack that I made with LG M50 cells
Here are my STL files for 3D printing: https://www.thingiverse.com/thing:4564628/files
0:00 Intro
0:51 Assembly
2:06 Arming
3:05 Launch
4:43 Condensed Flight
7:04 Landing
7:54 Touch Down
8:46 Airplane Tour
9:50 Summary
I'd like to start by thanking my friend Jack. Not only did he capture that awesome
air-to-air footage but he also helped a lot throughout the day. He served as my spotter
at times and an extra pair of hands and I really appreciate his help. Now I have two Phoenix 2400s.
One of them I've added solar cells to the wings and I've got a few videos about that.
The other set of wings I left normal. They're the ones that you can see here. So instead of
with solar I decided to just build a larger battery and give it another shot. So not only
does solar add weight and complexity and weather dependence but also it's difficult to install
solar cells without messing up the top curvature of the airfoil. So despite my best efforts I think
the airfoil became quite a bit less efficient and so I was curious to know if I just used a larger
higher voltage battery if I could get an even longer flight time. And this appealed to me
because in theory you could fly it on a cloudy day or you could fly it at night and you would
still have this same awesome endurance. Throttle armed. That sets the home location. Change the
flight mode to auto where the one and only waypoint is takeoff. And now it's ready to go.
It's set up for shake to wake. So a little bump. Wake it up. It's going to spin the motor up and
I'm going to throw it as hard as I can and hope it flies. I'm going to use just a little bit of flaps.
Half flaps because I don't have a headwind or anything to throw it into. And I'm going to be
super careful and gentle as I pick it up. Nervous. This thing weighs a little over nine and a half
pounds and that is a lot of airplane to throw. Oh that way looks pretty good too but
I know there's a road that way and I know there's not much this way.
Hopefully it doesn't crash into that white fence. Wake it up. Come on baby. Yes!
Take off the flaps. Oh it's flying. Nice. Man I'm glad I had that click of flap turned on.
Pardon my heavy breathing. I was extremely nervous and excited. This was the first and only time that
plane has flown with this super super heavy battery. Let me go over the OSD real quick. We've
got number of GPS satellites, wind speed, air speed, ground speed, distance and direction to the home
location, flight mode, fly time, milliamp hours consumed, distance across the ground, voltage,
altitude, current, and throttle setting. 70% throttle. Pulling 16 amps. About to hit the 350 feet
where it will turn around. There it is. Nice. And now it's gonna circle the home position
and it's coming back looking smooth. Nice. Nice. Gonna reset the recording because
if it goes to bad static the rest of the recording is done-zo. So starting the new recording.
We're at a minute and 30 seconds. Nice. There it is. Looking good. This is just over an hour
into the flight and I've averaged about 5 amps per hour. And this is about the 2 hour mark
and I'm on the low side of 5 amps per hour. Alright we're 175 minutes into the flight.
3 hours is 180 minutes so we're almost at the 3 hour mark. Here's my setup. Got my backup screen,
Cheez-Its, cooler, transmitter, and yeah everything's looking good. I set up my ground
station here because not only did I have shade and a place to put my things but I could also
easily see the plane flying in its orbit across the sky from left to right. Let's have a look
around. Nice. Wind is still about 5 miles an hour. The flight controller does a really good
job of assessing the wind using the GPS and the accelerometers and gyros. My ground station is
right there. We've covered 95 miles across the ground and everything's looking really good.
We are 4 hours and 43 minutes into the flight. We have a good number of GPS satellites. The wind
has picked up a little bit. Airspeed and ground speed are still in the low 30s. Current use so
far looks good. Voltage looks good. Now as we jump to the next clip which is at the 7.5 hour mark,
the altitude there, about 340 some feet, that will remain the same but watch the distance to the
So over the course of those roughly 3 hours, the temperature increased quite a bit and
a barometer drift occurred. The plane thinks it's at 350 feet but it's quite a bit lower.
Now this is at the nearly 10 hour mark and you can see the sun's at quite a low angle now.
Here's the final lap. We are at 11.3 volts and we're gonna do one more go around.
Motor off. Switching to manual. Drop the flap so I don't overshoot too badly.
Still gonna overshoot. I'm gonna turn around down there. Don't crash it. Please don't crash it.
Don't stall. Avoid the dog. Coming in to land. Please just land.
10 hours and 45 minutes.
And the dog.
Hey puppy. Thank you for not biting me.
Oh dude. That's it. Let me give you a tour of the airplane.
You still recording? Yeah. All right so uh modification since last time. Swapped out
the antenna from a pagoda to a little lollipop. That probably helped a little bit.
Obviously the solar wings are gone. This is the second set. The prop is a 12x12.
There is the monster battery. Just there's a large section of the fuselage cut out to fit it.
You see anything else noteworthy? Flight controller is here.
And here's the inside. Oh the prop survived.
Yeah there's the receiver. ESC. And if you want to get a shot of the fpv screen.
In the sun. Yeah. 10 hours and 45 minutes. I was so so pumped. If you watch me in the top
right corner of the screen you will literally see me jumping with joy. A little embarrassing.
I apologize but this is this is a super long flight time. I used the whole battery of course.
Covered 340 miles across the ground and flew for 645 minutes. That's 10 hours and 45 minutes.
If you have any questions let me know. I'm happy to answer questions and discuss stuff in the
comments below. Hit the like button if you will. Subscribe if you want to see my future videos.
And thanks for watching.
