Phoenix 2400 First Autonomous Endurance Flight
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- čas přidán 5. 08. 2020
- This was my new record for time and distance (401 minutes and 195 miles)
Phoenix 2400
Matek F405 Wing with Arduplane
12x12 APC propeller
Racerstar 3508 700KV motor
DYS 30A ESC with BLheli
45Ah 3s Li-Ion battery that I made with Samsung 50E cells
Royalty Free Music by Bensound
Dreams by Bensound
www.bensound.com/royalty-free-... - Věda a technologie
Great Job!
Looks like you got on the backside of the LD curve there for a moment. Could not have been long, as that is not efficient, and the overall fight was very efficient. you must have quite rear CG too, good, because it helped prevent a stall. (unlike what you are told in the textbook due to down elevator required to fly, means horiz. stab is lifting, and not acting against the wing. overall more lift= slower stall speed) along with the Stall prevention logic in Arduplane fighting it, probably very near the edge.
Interesting about the thermals, and i'm sure you got some help from them, at a small window of time. Usually around 11am, seems like all of the air is going up. But over a 6 hr flight, it's unlikely that it had any significant effect on flight duration.
you still had lots of battery left.. a higher KV motor should let you push the battery further?
great job streamlining, and reducing mass!
That square prop seems to be very key! i've just finished balancing my 10 x 10 APC's, all 4 of them, for the next project. we'll see how they work.
gotta get the prop RPM down looooowwww.. ha ha
Thanks for the mention, not necessary, but makes me feel all warm and fizzy inside. ha ha
you are going good places with this! will be very interesting to see your next step with solar range extension. better hurry up, still near the solstice, but not for long. me hurry too! done with center wing, propulsion, and working on outer wing sections. maybe a week or two.
WOW!!
Very impressive
Thenks
I have my camera mounted on the rudder too, but never thought to mount it to a servo - great idea. Cool video.
You should! I do that every chance that I get.
Great flight! One question, why the high pitch on the prop? For a slow flying plane like the Phoenix (I have one) it is very inefficient! Larger diameter with a lower pitch will be more efficient allowing longer motor runs and also preventing the stalled prop/low efficiency/high current/at the stall you experienced towards the end of the flight.
Hello Rudi, I have experimented with different propeller pitch, but this one is performing the best. A lower pitch prop is better for making static thrust (like a drone hovering), and a higher pitch prop is better at making thrust at speed (pylon racer). It is like the gears in your car. I want my plane it be in a high gear (high pitch prop) so that the motor RPM needed to make thrust is as low as possible. It does not make thrust until the "pitch speed" (pitch * RPM) is equal to the incoming air speed. If I went to a 12x6 prop, I would have to turn the motor twice as fast to get to that point. When people test motor/prop combos, it is usually a static test and usually at 100% throttle. Ideally, I would have a wind tunnel that would allow me to test the motor/prop combo with 30 mph of air flow already going through the prop and focused at the 50% throttle mark. Have you seen my following video where I got it to fly for 7 hours and 22 minutes by adjust the control surfaces trim? czcams.com/video/Y-cnQMsPMe4/video.html
Any plan to increase battery voltage for better efficiency?
No, the main advantage of using higher voltage is that you use less current . . . thinner wires . . . but this plane cruises on 6 amps. Peak current is 20A. I already have thin lightweight wires.
@@MatthewHeiskell Thanks for the info, and impressive setup
@@NicholasRehm Thanks! I had a look at your channel, you've done some impressive stuff 👍
Nicely done. Did you purchase the servo camera mount? If so, where did you buy it? Thanks
Thanks! 😄 To make the FPV camera pan, I just used epoxy to glue it onto a servo, haha. That kept the weight and drag as low as possible.
Superb job. How much does the empty plane weigh?
Thanks! 😄 that’s a good question! I sure I mention it in one of the Phoenix videos. Likely in the 10 hour and 45 minute long flight video.
Hi - nice flight. You are using an F405 Wing? What GPS are you using? I have had a lot of experience with Arduplane on PixHawks but with my F405 I cannot get the GPS to connect more than once. After a second boot up the GPS can’t get a fix and has allegedly low signal. Did you have any problems?
I use the BN-220 GPS. Are you using arduplane or iNav? Did you go ouside to let it get a GPS lock? Maybe switched the Tx Rx wires?
Great build and performance! Curious about your access cut-out and your reinforcements. I dig my Ranger but would really like being able to open it up as needed.
I cut that huge hole in the bottom to fit the battery. I didn't do any reinforcements. Just a little black tape to protect the battery from those edged. The blown plastic fuselage is super strong.
amazing job, i will probably do the same set up with you in the future for long duration flights but why did you choose the 12x12 propeller instead of the 12x3.8 or the 15x4 that they recommend for that motor ,wouldn't the recommended propellers be more efficient for that motor ?, also if you used the 380 kv version wouldnt the efficiency be better ? or is there a reason why you didn't go lower on kv ?
The low pitch prop that they recommend is for making a lot of static thrust because that motor was made for a large quadcopter that is hovering most of the time. Our planes are always flying forward with decent speed, so the air is already moving pretty quickly when it gets to the prop, so we want the prop to be taking a larger bite of air with each pass. You could use the 380 kv version with a 6s battery. I chose to build a giant 3s battery because it would be more useful for other projects. 12V is more common than 24V. I actually just switched to the Racerstar Racing Edition 4108 BR4108 600KV with a 14x14 APC prop. I have not flown it yet, but I think that this should be even more efficient. I really wish that I had a wind tunnel so that I could test prop efficiency at flying speed instead of static.
@@MatthewHeiskellthanks makes sense, but how you choose the 12x12 specifically instead of a 12x8 for example,also you have a 3d printed mount for your motor is it possible to mount a different motor than the standard that the aircraft comes with with out that 3d printed mount adapter ?
@@dimitrisspiridonidis3284 Spike at "FPVReviews" recommend more pitch for efficiency. I have found his advice to be true. Props are cheap, test both of them haha. Yes, you can easily drill new holes in the flat nose section to mount any motor. I just used an adapter because I'm fancy haha.
Could you make a video on how you fit everything in that plane? Thanks!
Sure! You can see some of it at 5:04. The next video will have more detail though.
@@MatthewHeiskell nice! Thanks, got a pheonix and have no idea where I'd even mount a f765 wing
@@IntrepidCraft Ohhh yeah! There is a little 3D printed platform that the flight controller is double sided taped to that is attached to the fuse with the two screws are rear of the battery (on the bottom). Do you have a 3D printer? I can share the STL file.
@@MatthewHeiskell I do!
@@IntrepidCraft www.thingiverse.com/thing:4564628
Crazy flight time! But i more amazed with the tiny pan mechanism you have installed there, will you be able to share the stl file for that? TIA
Thanks haha, it it just a cheap FPV camera hot glued onto a 9g servo! I’ve found that epoxy works better though.
For real? Will definitely try that out! Thanks!
how you cat the frond nose of the plane to put the motor out of the plane? we want a video
I didn't modify anything. I just put the motor on the outside when I was installing the 4 bolts. 😄
@@MatthewHeiskell oh ok
Wow!!! And I bet it was absolutely silent cruising at altitude?
We could just barely hear it when it was directly overhead 👌
@@MatthewHeiskell Bet silent running with less aggressive prop
@@Vested_Investor It was not prop noise, just the faint whine of the brushless motor. Have you heard of Field Oriented Control (FOC) ESCs? I think that they might be the future for brushless motors.
@@MatthewHeiskell Looks like the perfect application. Do you know a source for UAVs (I've just seen them for rockcrawlers and skateboards)?
@@Vested_Investor I've done some hunting in the past, but I did some more recently and I found this: www.st.com/content/ccc/resource/technical/document/data_brief/group1/a6/16/a0/51/cb/9a/45/7d/DM00375469/files/DM00375469.pdf/jcr:content/translations/en.DM00375469.pdf It looks promising actually. I want to do some more research on it, but it might be perfect. The current limits are already perfect, if it is easy to configure the other ESC parameters, then I will order one and test it.
I am interested in building this plane
I think it is a great challenge
Question
1. Autonomous flight was done with Mission planner Ardupilot?
2. The long lasting 6 hours flight was due to the aerodynamic of the plane?
3. How does thermo will affect a mission plan flight from A TO D?
4. What electric components did you use?
Cool! Its a great airplane, go for it!
1. I used mission planner, I flashed the F405 wing with the arduplane software.
2. Yes, the efficiency and the very large Li-Ion battery that I made with NCR18650GA cells.
3. The thermals did not have much of an effect either way, It was just flying in a circle the entire time. If you manually fly, and hunt for thermals, then you could extend your endurance.
4. The electronics are in the video description.
@@MatthewHeiskell
Thank you for your assistance
* I forwarded your videos to my friends in Bahamas. They are going crazy
They asked me to build couple of your planes to send them in between the islands. As you may know, Bahamas has lot of islands
What will it be the maximum wind speed for the plane to fly? We don't want to throw it in the air?
We want to avoid a crash
Is it possible to set up a mission flight to land at 100 miles?
My friend has an uav that uses LTE WIFI 4G, XBSTATION.
One of my main goal is to send the solar plane from Point A to Point B, 50 or 100 miles.
@@franciscourena5636 Is your friend using the parot disco 2? Yes, you can make arduplane/mission planner land wherever you want. It is pretty windy in the Bahamas, right? This plane likes to fly about 30mph. So a 20mph head wind could make for a long flight. Hand launching is the best method. Landing gear adds weight, complexity, and wind resistance in the air. Belly landing airplanes are more forgiving. Maybe start experimenting with a bixler-like airplane.
@@franciscourena5636 I don't actually recommend solar. It is neat, but there are a lot of problems. They only work with the sun is shining. They need a special charge controller. They are expensive. They are fragile. They do not contribute very much at RC size airplanes. The weight/money is better spent on a DIY Li-Ion battery pack made with NCR18650GA Sanyo cells. They work with or without the sun.
Very impressive