Please select Into the mobile phone version | Continue to access the computer ver.
How high can this drone fly?
36781 393 2017-12-16
Uploading and Loding Picture ...(0/1)
o(^-^)o
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

DroneLeg Posted at 2017-12-30 04:37
Good joke. I work in agriculture, I would like to make high-resolution images from thousands of hectares of farmland and then analyze them on a computer. What drone do you offer?

I personally don't offer any drones but I'd recommend the DJI AGRAS MG-1S for agriculture. Go onto the DJI store and look under the 'Enterprise' section - it's the level above professional.
2017-12-30
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

Here are some official stats on it: -

Total Weight        10 kg (without battery)
Standard Takeoff Weight        23.8 kg
Max Takeoff Weight        24.8 kg (at sea level)
Max Thrust-Weight Ratio        1.71 (with 23.8 kg takeoff weight)
Power Battery        DJI Designated Battery (MG-12000S)
Max Power Consumption        6400 W
Hovering Power Consumption        3800 W(@with 23.8 kg takeoff weight)
Hovering Time*        22 min(@12000 mAh & 13.8 kg takeoff weight)
10 min(@12000 mAh & 23.8 kg takeoff weight)
*Hovering time acquired at sea level, with wind speeds lower than 3m/s.
Max Operating Speed        7 m/s
Max Flying Speed        12 m/s(P & F Mode,with GPS);15 m/s (A Mode)
Max Service Ceiling Above Sea Level        2000 m
Recommended Operating Temperature        0 ℃ to 40 ℃
You can only purchase it from very specialised, authorised dealers and don't expect much change out of US$25,000 for the full kit.
2017-12-30
Use props
horcsab1967dron
lvl.4

Hungary
Offline

A CW Posted at 2017-12-30 05:21
Here are some official stats on it: -

Total Weight        10 kg (without battery)

This looks great, I can buy one for Phantom 4. Can this also be cameras?
2017-12-30-23-07-42--1087075590.jpeg
2017-12-30
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

I know little else about this drone. It’s designed to spray crops but I believe it does have a camera for 3D mapping. You’d need to contact DJI directly for more info. To be clear, this is not a recreational drone and in a totally different league to the Phantom series.
2017-12-30
Use props
horcsab1967dron
lvl.4

Hungary
Offline

A CW Posted at 2017-12-30 16:31
I know little else about this drone. It’s designed to spray crops but I believe it does have a camera for 3D mapping. You’d need to contact DJI directly for more info. To be clear, this is not a recreational drone and in a totally different league to the Phantom series.

Dji Mavic Pro?

Hovering Time: 27 min
7000 meter
DJI-Mavic-Pro-Drone.jpg
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

horcsab1967dron Posted at 2017-12-31 00:38
Dji Mavic Pro?

Hovering Time: 27 min

Yes, thats the original Mavic - whats your question?
2017-12-31
Use props
horcsab1967dron
lvl.4

Hungary
Offline

A CW Posted at 2017-12-31 00:41
Yes, thats the original Mavic - whats your question?

I would recommend this to DroneLeg. It's 7 km far away, it would be perfect for him, I think he does not want to spray with the drone. What do you think?
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

horcsab1967dron Posted at 2017-12-31 01:01
I would recommend this to DroneLeg. It's 7 km far away, it would be perfect for him, I think he does not want to spray with the drone. What do you think?

The 7KM range is the max horizontal distance in FCC compliant areas such as the US. In Europe, which uses CE compliance, the range of this drone is 4KM. The ceiling limit is 5KM ASL though, as with all modern DJI drones, is capped at 500M AGL for legal reasons. I have no idea what is best for that persons needs as I don't know him or what he needs a drone for.
2017-12-31
Use props
PeteHB
Second Officer

France
Offline

I am a little confused about the conflict between max hight above take off point and the max hight above ground level. For example take off point is 100M above sea level then the max hight a DJI drone can fly above this is 500M ie 600M total but if the ground rises slowly to say 1000M not unusual then the drone should be capable of flying up the slope but maintaining the restricted hight AGL but is stopped by the 500M above take of level restriction. There is a conflict here that should be easy to resolve by software when following terrain hight as in Google Maps. I was going to buy and use Litchi to do a way point rout flying up the side of a small mountain following the AGL as it increased then realised that the drone would be stupidly restricted by the max hight above take off point.
Am I correct in my assumptions?
2017-12-31
Use props
horcsab1967dron
lvl.4

Hungary
Offline

PeteHB Posted at 2017-12-31 01:14
I am a little confused about the conflict between max hight above take off point and the max hight above ground level. For example take off point is 100M above sea level then the max hight a DJI drone can fly above this is 500M ie 600M total but if the ground rises slowly to say 1000M not unusual then the drone should be capable of flying up the slope but maintaining the restricted hight AGL but is stopped by the 500M above take of level restriction. There is a conflict here that should be easy to resolve by software when following terrain hight as in Google Maps. I was going to buy and use Litchi to do a way point rout flying up the side of a small mountain following the AGL as it increased then realised that the drone would be stupidly restricted by the max hight above take off point.
Am I correct in my assumptions?

It's a very good question, that's what I remembered. Your question is A CW can only answer, he is a genius.
2017-12-31
Use props
horcsab1967dron
lvl.4

Hungary
Offline

A CW Posted at 2017-12-31 01:13
The 7KM range is the max horizontal distance in FCC compliant areas such as the US. In Europe, which uses CE compliance, the range of this drone is 4KM. The ceiling limit is 5KM ASL though, as with all modern DJI drones, is capped at 500M AGL for legal reasons. I have no idea what is best for that persons needs as I don't know him or what he needs a drone for.

I do not understand in Europe why restrictions are more stringent than in the USA. This is outrageous.
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

horcsab1967dron Posted at 2017-12-31 03:24
I do not understand in Europe why restrictions are more stringent than in the USA. This is outrageous.

This is the best explanation I've come to accept: -

"FCC certification is required for radio frequency devices in the United States. It sets limits on on intentional and unintentional electromagnetic radiation to protect the electromagnetic spectrum.

CE is a compliance scheme imposed by Europe. It also has requirements for the protection of the electromagnetic spectrum, but the requirements include other aspects such as the protection of the consumer and in some cases the environment".
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

PeteHB Posted at 2017-12-31 01:14
I am a little confused about the conflict between max hight above take off point and the max hight above ground level. For example take off point is 100M above sea level then the max hight a DJI drone can fly above this is 500M ie 600M total but if the ground rises slowly to say 1000M not unusual then the drone should be capable of flying up the slope but maintaining the restricted hight AGL but is stopped by the 500M above take of level restriction. There is a conflict here that should be easy to resolve by software when following terrain hight as in Google Maps. I was going to buy and use Litchi to do a way point rout flying up the side of a small mountain following the AGL as it increased then realised that the drone would be stupidly restricted by the max hight above take off point.
Am I correct in my assumptions?

The drones altitude is displayed using a barometer against the home point from where the drone took off. The downward vision positioning system has a range of 13M - any altitude above that and the drone can not see the ground. It will adjust its altitude using the terrain follow intelligent flight mode but only when flying under 13M on a gradient of less than 20 degrees. Always ensure you set the RTH altitude above any obstacles in your environment.
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

horcsab1967dron Posted at 2017-12-31 03:13
It's a very good question, that's what I remembered. Your question is A CW can only answer, he is a genius.

Thanks for the complement but besides knowing a bit about drones I am far from a genius LOL
2017-12-31
Use props
PeteHB
Second Officer

France
Offline

A CW Posted at 2017-12-31 03:47
The drones altitude is displayed using a barometer against the home point from where the drone took off. The downward vision positioning system has a range of 13M - any altitude above that and the drone can not see the ground. It will adjust its altitude using the terrain follow intelligent flight mode but only when flying under 13M on a gradient of less than 20 degrees. Always ensure you set the RTH altitude above any obstacles in your environment.

The drone has GPS capability and GPS has the ability to determine hight so it should be perfectly feasible for a drone to track a mapped hight and reference that to its GPS determined hight, within reasonable parameters.
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

PeteHB Posted at 2017-12-31 03:51
The drone has GPS capability and GPS has the ability to determine hight so it should be perfectly feasible for a drone to track a mapped hight and reference that to its GPS determined hight, within reasonable parameters.

Maps don't change quick enough with new structures and development etc. Airports become abandoned and residential areas built on them but maps will still show as a field etc. This is an age old discussion and DJI refuse to align GPS maps to the drones altitude readings. Further more, losing GPS signal does happen quite a bit with drones - this would cause massive issues if the altitude readings are also driven by GPS/GLONASS satellites (yes, DJI drones do also use Russian satellites).  
2017-12-31
Use props
PeteHB
Second Officer

France
Offline

A CW Posted at 2017-12-31 03:55
Maps don't change quick enough with new structures and development etc. Airports become abandoned and residential areas built on them but maps will still show as a field etc. This is an age old discussion and DJI refuse to align GPS maps to the drones altitude readings. Further more, losing GPS signal does happen quite a bit with drones - this would cause massive issues if the altitude readings are also driven by GPS/GLONASS satellites (yes, DJI drones do also use Russian satellites).

Whilst that is an argument it is a weak one most countries have regulations that prohibit the flying over habited spaces and the user should respect that and contravene it at his peril. The obvious use of using GPS to follow terrain and stay within limits of acceptable hight AGL is in unpopulated areas in the mountains and countryside, people fly in these areas now knowing the risk of loss of signal which is many times more likely than the loss of GPS signal which is extremely rare even the degradation of position that occurs when selective positioning is turned off is rare. So the question still remains.
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

PeteHB Posted at 2017-12-31 04:08
Whilst that is an argument it is a weak one most countries have regulations that prohibit the flying over habited spaces and the user should respect that and contravene it at his peril. The obvious use of using GPS to follow terrain and stay within limits of acceptable hight AGL is in unpopulated areas in the mountains and countryside, people fly in these areas now knowing the risk of loss of signal which is many times more likely than the loss of GPS signal which is extremely rare even the degradation of position that occurs when selective positioning is turned off is rare. So the question still remains.

Perhaps you misunderstand. Maps may show areas being uninhabited that have since been built on and the maps not updated to show. This presents a risk. As I also previously stated, GPS signal disconnects during flight sometimes - what then?
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

In either case the answer to your question is that the altitude is assessed above the home point and not the ground during flight. You and I can debate this all day but thats the bottom line and it won't change anytime soon.
2017-12-31
Use props
PeteHB
Second Officer

France
Offline

A CW Posted at 2017-12-31 04:11
Perhaps you misunderstand. Maps may show areas being uninhabited that have since been built on and the maps not updated to show. This presents a risk. As I also previously stated, GPS signal disconnects during flight sometimes - what then?

I understand that but it is the pilots responsibility to survey his flying area and if it has changed from his map data then he should adjust his flight plan accordingly.

If the GPS signal is lost then it is or would be the same result as if the GPS signal is lost now and that is so rare as to be negligible loss of GPS signal between the satellites and the drone is different than between the drone and the controlling device.
2017-12-31
Use props
PeteHB
Second Officer

France
Offline

A CW Posted at 2017-12-31 04:13
In either case the answer to your question is that the altitude is assessed above the home point and not the ground during flight. You and I can debate this all day but thats the bottom line and it won't change anytime soon.

I agree it is not likely to change but it is a ridiculous conflict and I mean the one between max hight and AGL hight that could easily be resolved.
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

PeteHB Posted at 2017-12-31 04:22
I understand that but it is the pilots responsibility to survey his flying area and if it has changed from his map data then he should adjust his flight plan accordingly.

If the GPS signal is lost then it is or would be the same result as if the GPS signal is lost now and that is so rare as to be negligible loss of GPS signal between the satellites and the drone is different than between the drone and the controlling device.

Sounds complicated having to assess terrain gradients. Some people who own drones are teenagers and just want to take a photo or video...
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

PeteHB Posted at 2017-12-31 04:22
I understand that but it is the pilots responsibility to survey his flying area and if it has changed from his map data then he should adjust his flight plan accordingly.

If the GPS signal is lost then it is or would be the same result as if the GPS signal is lost now and that is so rare as to be negligible loss of GPS signal between the satellites and the drone is different than between the drone and the controlling device.

If GPS signal is lost as things stand the drone reverts to ATTI and the altitude readings remain gauged against the home point using the barometer which is vital as ATTI requires full manual flight. If GPS is used to assess the altitude in fully updated hardware built into the receivers of the drone then the drone would no longer know it's altitude against any point and this will cause a potentially very dangerous situation. This is all very speculative and thus frankly pointless. DJI drones do not assess altitude using GPS co-ordinates and probably never will for safety reasons.   
2017-12-31
Use props
PeteHB
Second Officer

France
Offline

A CW Posted at 2017-12-31 04:24
Sounds complicated having to assess terrain gradients. Some people who own drones are teenagers and just want to take a photo or video...

But they are still required to fly within the laws of the country they are operating in.
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

PeteHB Posted at 2017-12-31 04:24
I agree it is not likely to change but it is a ridiculous conflict and I mean the one between max hight and AGL hight that could easily be resolved.

It would be nice to have for sure as the current altitude readings are not accurate to the ground the drone is actually flying over but like I said, it will be a long time coming.
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

PeteHB Posted at 2017-12-31 04:33
But they are still required to fly within the laws of the country they are operating in.

Everyone is.
2017-12-31
Use props
PeteHB
Second Officer

France
Offline

A CW Posted at 2017-12-31 04:29
If GPS signal is lost as things stand the drone reverts to ATTI and the altitude readings remain gauged against the home point using the barometer which is vital as ATTI requires full manual flight. If GPS is used to assess the altitude in fully updated hardware built into the receivers of the drone then the drone would no longer know it's altitude against any point and this will cause a potentially very dangerous situation. This is all very speculative and thus frankly pointless. DJI drones do not assess altitude using GPS co-ordinates and probably never will for safety reasons.

Whilst I agree it may be pointless to speculate there is no reason that GPS data and barometric data cannot be used in conjunction with each other to give a perfectly safe fall back position if one or the other is lost, in fact the likelihood of failure would be many orders of magnitude higher for failure of the barometric pressure sensing component than GPS signal failure.
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

PeteHB Posted at 2017-12-31 04:37
Whilst I agree it may be pointless to speculate there is no reason that GPS data and barometric data cannot be used in conjunction with each other to give a perfectly safe fall back position if one or the other is lost, in fact the likelihood of failure would be many orders of magnitude higher for failure of the barometric pressure sensing component than GPS signal failure.

As I said, it would be nice wouldn't it. Anyway, HNY!
2017-12-31
Use props
PeteHB
Second Officer

France
Offline

A CW Posted at 2017-12-31 04:38
As I said, it would be nice wouldn't it. Anyway, HNY!

A HNY to you too, if nothing else it has got our post count and points up.
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

PeteHB Posted at 2017-12-31 04:39
A HNY to you too, if nothing else it has got our post count and points up.

Hahahahaha - thats true I guess!
2017-12-31
Use props
KedDK
Captain
Flight distance : 1133038 ft
Denmark
Offline

PeteHB Posted at 2017-12-31 01:14
I am a little confused about the conflict between max hight above take off point and the max hight above ground level. For example take off point is 100M above sea level then the max hight a DJI drone can fly above this is 500M ie 600M total but if the ground rises slowly to say 1000M not unusual then the drone should be capable of flying up the slope but maintaining the restricted hight AGL but is stopped by the 500M above take of level restriction. There is a conflict here that should be easy to resolve by software when following terrain hight as in Google Maps. I was going to buy and use Litchi to do a way point rout flying up the side of a small mountain following the AGL as it increased then realised that the drone would be stupidly restricted by the max hight above take off point.
Am I correct in my assumptions?

"Am I correct in my assumptions?"
Yes you are and i agree with you that DJI shouldn't do those restrictions as they can stop you doing a 100% legal flight.
2017-12-31
Use props
KedDK
Captain
Flight distance : 1133038 ft
Denmark
Offline

horcsab1967dron Posted at 2017-12-31 03:24
I do not understand in Europe why restrictions are more stringent than in the USA. This is outrageous.

That is just the way it is, has to do with power allowed to use for transmission.

What i don't get is that DJI is using 17dBm @ 2.4GHz and only 14dBm @ 5.8GHz, to my best understanding it would be legal to use 20dBm @ 2.4GHz and up to 30dBm @3.8GHz, but possibly i am missing something.
Both the above links found by searching on this site.
2017-12-31
Use props
PeteHB
Second Officer

France
Offline

KedDK Posted at 2017-12-31 05:10
"Am I correct in my assumptions?"
Yes you are and i agree with you that DJI shouldn't do those restrictions as they can stop you doing a 100% legal flight.

After my exchanges with A CW I understand that yes I was correct and there is an obvious conflict which should be easy to address but as A CW points out there is probably no chance of that happening. DJI are just covering all their bases and not really thinking through of the conflicts that they produce which is unfortunate as they could still have all their safeguards if they thought about it.
2017-12-31
Use props
horcsab1967dron
lvl.4

Hungary
Offline

A CW Posted at 2017-12-31 03:55
Maps don't change quick enough with new structures and development etc. Airports become abandoned and residential areas built on them but maps will still show as a field etc. This is an age old discussion and DJI refuse to align GPS maps to the drones altitude readings. Further more, losing GPS signal does happen quite a bit with drones - this would cause massive issues if the altitude readings are also driven by GPS/GLONASS satellites (yes, DJI drones do also use Russian satellites).

In Europa why allow USA (GPS) and Russian (GLONASS) systems to use DJI, when it has its own global navigation satellite system (GNSS) in Galileo?
2017-12-31
Use props
DroneLeg
lvl.4

Hungary
Offline

horcsab1967dron Posted at 2017-12-31 00:38
Dji Mavic Pro?

Hovering Time: 27 min

Thanks for the advice, this drone would be more useful to me. This type is already available for purchase, how much is it worth?
2017-12-31
Use props
horcsab1967dron
lvl.4

Hungary
Offline

DroneLeg Posted at 2017-12-31 07:51
Thanks for the advice, this drone would be more useful to me. This type is already available for purchase, how much is it worth?

The drone is in action, now buy it! 899 $
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

I got the new platinum version of the Mavic Pro - highly recommend it for recreational use.
2017-12-31
Use props
horcsab1967dron
lvl.4

Hungary
Offline

A CW Posted at 2017-12-31 09:12
I got the new platinum version of the Mavic Pro - highly recommend it for recreational use.

Better than a Phantom 4? I'm very happy with P4.
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

I prefer to fly it to my Phantom 4 Pro TBH. It’s so quiet and portable.
2017-12-31
Use props
A CW
Captain
Flight distance : 13838848 ft
  • >>>
United Kingdom
Offline

horcsab1967dron Posted at 2017-12-31 07:46
In Europa why allow USA (GPS) and Russian (GLONASS) systems to use DJI, when it has its own global navigation satellite system (GNSS) in Galileo?

I have no idea!
2017-12-31
Use props
Advanced
You need to log in before you can reply Login | Register now

Credit Rules