Gender
Male
About
Location
Paris
Please tell us a bit about your UAV interest
UAV design
Hometown:
Paris
Activity Feed
"Thanks. I'd like to try DGPS in my autopilot Pixhawk from 3DR. Does anyone know which DGPS is compatible with Pixhawk?"
"1 cm accurate GPS....900 USD
Could you provide the link of it?
M8N is not the 'real' DGPS. It doesn't have the ground station by itself. Theoretically, it is not that accurate in countries without public ground station, e.g. China. "
Could you provide the link of it?
M8N is not the 'real' DGPS. It doesn't have the ground station by itself. Theoretically, it is not that accurate in countries without public ground station, e.g. China. "
"The drones fly only 2-5 meters above the crops and the there's strong downwash from the rotor. The pesticide won't drift away normally. So for fully automatic flight, the GPS precision will be essential."
"Yes. Pesticide spraying drones can not compete with manned airplane for large farmland. I guess most of the purchasers of the pesticide spraying drones only use them for very small field, or experimental plots.
Let me ask about these drone…"
Let me ask about these drone…"
"I don't get your point. Do you mean the problem is more about c.g. range due to the liquid movement and load? It is a critical problem but I guess it is the same for non/half automatic drone and fully automatic drone. I don't get how could this…"
Spaying accuracy is one of the most important reasons that the fully automatic drones are not widely used in the pesticide spraying application. The accuracy is mainly constraint by the GPS positioning accuracy. But what about using DGPS (not mean…
"What do you mean by 'specialized commercial application'?
Is that to develop a ground station software program or interface that can let user set up one kind of special missions more conveniently?"
Is that to develop a ground station software program or interface that can let user set up one kind of special missions more conveniently?"
I’m a hobbyist in Pixhawk. I use Pixhawk auto mode to fly my RC model airplanes quite well. They could follow the flight path very stably and precisely after I carefully tuned the parameters. My fixed wings with Pixhawk almost could do everything I…
Hi, I use Pixhawk to fly my fixed RC model airplane. Now my aircraft carries a smoke cartridge to release smoke during flight. I would like to set up that the airplane, which is controlled by Pixhawk auto mode, could start and keep releasing smoke…
"I'm curious about the suggestion of not flying more than 10 feet above the plants is mainly for the concern of the droplet drift or the droplet evaporation?
At a zero wind day, what about I let the machine fly even higher than that?"
At a zero wind day, what about I let the machine fly even higher than that?"
"Then what's the drawback of unmanned helicopter compared with multirotors? Anyway the multirotors are still on the market."
It seems that multirotors have to be powered by the expensive battery. And the helicopter can use engine and could have much larger load. I’m wondering what’s the advantage of multirotor compared with helicopter in the agricultural UAVs pesticide…
"Do not apply the product when the wind speed exceeds 10mph.
I doubt do the users follow this advice or not. At most of the regions, the wind wind speed will usually exceed that value and users have to spray pesticide on time. Will the droplet…"
I doubt do the users follow this advice or not. At most of the regions, the wind wind speed will usually exceed that value and users have to spray pesticide on time. Will the droplet…"
"How do the permanent markers typically look like? Any picture of that? How do people make them?"
"Thank you very much for your careful answers, George. I just get back from my busy airfoil optimization task and will start to look at the spraying system. I will start to ask questions here."
What is the typically cruising (during pesticide spraying) speed of agricultural duster UAV? It looks like it flies quite slowly when it’s spraying the pesticide. Why don’t people increase the spraying efficiency by increasing the cruising speed…
