AV130 mount + GH2 kamera en Iftron video zender zijn gemonteerd, moet het alleen nog aansluiten, tijd voor de weegschaal dus.
Compleet vliegklaar met de 5S 8000mAh lipo van 1100g zit ik nu op 4470g, volgens mijn eerder gemaakte berekening (zit weer aardig in de buurt
) geeft dit een vliegtijd van zo'n 11 minuten, en met een totaal liftvermogen van 13,8Kg heb ik dan nog 9,33Kg lift over
Hier de post die ik op rcgroups geplaatst had van de berekening,
To estimate the power and efficiency of the Avroto M2814 motors I did some testing on 5S with an Graupner E-11x5 prop.
The test I did was with an 15x15 square alum tube, so the numbers will be a little negatief because round tubes are more efficient
(less bouncing back from the prop down wash), because of this there will also be less vibrations coming from the booms.
The Flexacopter flying weight without camera bud with an 5S 8000mAh lipo will be +/-
3100g divided by six =
517g for each motor
with an extra payload of
1500g (heavy DSLR) the numbers for each motor will be
767g.
So the numbers we are looking for are,
517g and 767g
From
87 > 98 sec at the time line you can see the
500g test and the red line indicate that we are pulling
3A multiplied by six =
18A total with
3000g flying weight.
From
137 > 145 sec at the time line you can see the
800g test and the red line indicate that we are pulling
5,8A multiplied by six =
34,8A total with
4500g flying weight.
80% from the
8000mAh lipo give
6,4Ah usable energy, this will give a flying time of 6,4÷18=0,35h 0,35x60=
21min flying time with 3000g.
6,4÷34,8=0,18h 0,18x60=
10,8min flying time with 4500g.
Not important bud nice to know is that the total lift power of the six Avroto's is
13,8Kg (3200W!!), so plenty of headroom.
0yEaTga9UG4[/media] M2814 - YouTube
