Can someone please tell me what the GRAD column is for in the mission planning screen shown below?
Thanks
Wayne
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Can someone please tell me what the GRAD column is for in the mission planning screen shown below?
Thanks
Wayne
You need to be a member of diydrones to add comments!
Replies
It is grade (slope) expressed as a percentage. Grade (%) = 100*(rise/run) or = 100*(Δaltitude/Δposition)
I figured this out by opening an elevation profile window in the Flight Plan screen of Mission Planner. (One can also translate the change in Lat & Long as you Δposition, but I didn't figure out how until later.) Read the distance between WPs of interest. Now divide the change in Alt by that distance and multiply by 100 to give your grade in %.
In the above screenshot, the distance from WP1 (takeoff) to WP2 is ~61m. The change in Alt is 100m. Plug it into the equation and you get the "Grad" shown - or something close. I'm not sure if there is some rounding going on, but I get a grade of 164% when using an online calculator for distance.
The nice thing about this is Google Earth also plots slope in % in their Elevation Profile. So you can compare the actual mission slope to the planned slopes.
BTW... the above mission would call for a 59° angle of climb from takeoff. I hope you have lots of power! ;)
I'd love to know this as well. The units seem too high...
Nobody knows the exact answer? How do we use this feature? Someone out there must know!
OK I've wondered about this too, but something in this example doesn't make sense to me. In the picture above the 'Verify Height' box is checked, but only one 'slope' is defined in the Grad field......either the area defined is perfectly flat or the box was checked after the mission was planned. This is what it should look like if you define a grid area and have "Verify Height' checked.
This is what it should look like if 'Verify Height' is not checked.
Regards,
Nathaniel ~KD2DEY
I've been wondering about this one too. I've used the AutoWP feature hundreds of times to plan very similar grids, and I can't seem to figure out the pattern behind the autogenerated Grad value. I'd really like to be able to control it.