poppylfh-sp Posted at 2016-10-19 09:14
Y'all realize the speed indicated is NOT true airspeed of the drone, it's ground speed, i.e., airspeed plus wind speed where drone is flying. Wind speed at even less than 100' above the ground can be quite a bit more than on the surface and at 400' AGL can be significantly more. One way to determine the wind speed at altitude is to come to a hover and then switch to ATTI mode and do nothing with the controls and you will get the wind speed as shown as airspeed on the RC and wind direction by noting the direction the drone is moving. I've recently flown where wind around 10 mph on surface but when at 397' P4 was traveling at 90 mph, which is a GPS derived ground speed. This was confirmed with a very slow "airspeed" once I turned upwind in Sport Mode and increased significantly as I descended. For flight recorde showing 125, I'd really expect that is a glitch as aircraft could not have a positive airspeed after turning upwind when it's max true airspeed is define to no over 100 mph, just saying.

just saying lol

Alex_Law_P4 Posted at 2018-3-26 04:19
Amazing place and nice GTR in the back at the end

It's a KIA STINGER GT not Gtr?

Ground speed still means the drone is motoring. Imagine hitting an object or a person at 62mph.

Would not be a pretty sight.  However I tend to fly where people are not around.  

This is in GPS mode not even sports mode.  A slight tail wind on the return leg of a flight.  

dw goldengrove Posted at 2018-4-8 15:36
It's a KIA STINGER GT not Gtr?

My bad I don't know my cars that well lol

blackcrusader Posted at 2018-4-8 16:20
Ground speed still means the drone is motoring. Imagine hitting an object or a person at 62mph.

Would not be a pretty sight.  However I tend to fly where people are not around.  

62.3 mph is just on a 100 KM/H - as stated it must be a different measurement than we are getting as this is a good 30% more than DJI specs state  and unmodified. If these speeds were achievable I am sure DJI would be telling the world for Sales reasons and they are not.
I have tried in Atti mode and Sport with some serious Tail winds (about 40KM winds) and cannot get over 76.6KM/h on P4   and 56.6 on Spark both are well over DJI specs stated. My friend has a Mavic and his best time in same area is 75km/h. So it bewilders me how these speeds are achieved it must be a varied measurement of speed and i stand by it. I know I have mentioned this before on this thread but its bugging me!!
Perhaps DJI can clarify?

P4P+ 97.6kph or 60.6mph

Clocked 64mph this morning, nice tail winds