see also: FlugZeit FlightTime

Inhaltsverzeichnis

  1. Test setup
    1. BL-Settings
  2. How to read the curves
    1. Example
    2. Flight time
  3. MK3644/24
    1. MK3644/24 12" Prop 25V
    2. MK3644/24 13" Prop 25V
    3. MK3644/24 14" Prop 25V
    4. MK3644/24 15" Prop 25V
    5. MK3644/24 Propeller comparison
    6. MK3644/24 Thrust vs Setpoint
  4. MK3638 4S
  5. Altigator A5050
    1. Altigator A5050 16x5 XOAR 4S
    2. Altigator A5050 16x6 XOAR 4S
  6. KDE3520XF/400kV
    1. KDE3520XF/400kV 14x8" Eprop 6S
    2. KDE3520XF/400kV 15x5" 6S
    3. KDE3520XF/400kV 16x5,5" 6S
  7. KDE4012XF/400
    1. KDE4012XF_400 16" 6S
    2. KDE4012XF_400 17" 6S
    3. KDE4012XF_400 18" 6S
  8. KDE4014XF/380
    1. Compare to MK3644
    2. KDE4014XF/380 16" 6S
    3. KDE4014XF/380 17" vs. 18" 6S
    4. KDE4014XF/380 18" 6S
  9. T-Motor U5/400
    1. T-Motor U5/400 16"
    2. T-Motor U5/400 18"
  10. T-Motor U7/490
    1. T-Motor U7/490 13" 6S
    2. T-Motor U7/490 15x5,5" 4S
    3. T-Motor U7/490 16x5,5" 4S
    4. T-Motor U7/490 17x5,8" 4S
    5. T-Motor U7/490 18" 4S
  11. T-Motor U8/135
    1. T-Motor U8/135 28" 6S

Test setup

https://gallery3.mikrokopter.de/var/albums/tech/U8_28_135kV_6S.jpg?m=1413802451

https://gallery3.mikrokopter.de/var/albums/tech/KDE4014XF-380_18_6S_Ozkan.gif?m=1413802069

BL-Settings

If not other noticed, these curves were recorded with:

  • 24° Timing
  • 20kHz

How to read the curves

With this curves it is easy to estimate the needed current and even estimate the flight-time.

  • please note that the unit of the currents are in the most graohs in 10mA - that means: 100 is 1A and 1000 is 10A

  • If there are courves Thrust vs. Setpoint -> 2550 = 100% -> 1270 = 50%

You can get the needed current for each needed thrust

Example

The total weight of a MikroKopter (4 Rotors) is 1400g -> so each motor needs a thrust of 350g for hovering (1400g / 4 = 350g)

http://gallery.mikrokopter.de/main.php/v/tech/MK3538_characteristic_curve_0-8A_howto.GIF.html

Current needed for 350g with the 13x6,5 APC - Propeller? -> 1,8A

Current needed for 350g with the 12x8 APC - Propeller? -> 2,4A

The total current for all four motors would be 7,2A (4 * 1,8A) or 9,6A (4 * 2,4A)

Flight time

You can estimate the flight time with this formular:

Time = 54 * Lipo / Current

(54 because we estimate 10% losses -> 60 * 0,9)

In case we would have a 3300 Lipo (3,3Ah), the Flight time for the 13x6,5 would be:

Time = 54 * 3,3 / 7,2 = 24,7 min

The same for the 12x8 Prop:

Time = 54 * 3,3 / 9,6 = 18,5 min

That is a different of 33% in flight time!

See also: FlugZeit

MK3644/24

Successfuly Tested on BL V3 (Firmware 1.10)

MK3644/24 12" Prop 25V

https://gallery3.mikrokopter.de/var/albums/tech/MK3644_6S_12_TvsI_V1_10.gif?m=1412677139

MK3644/24 13" Prop 25V

https://gallery3.mikrokopter.de/var/albums/tech/MK3644_6S_13_TvsI_V1_10.gif?m=1412677181

MK3644/24 14" Prop 25V

https://gallery3.mikrokopter.de/var/albums/tech/MK3644_6S_14_TvsI_V1_10.gif?m=1412677155

MK3644/24 15" Prop 25V

https://gallery3.mikrokopter.de/var/albums/tech/MK3644_6S_15x5_TvsI_V1_10.gif?m=1412677170

MK3644/24 Propeller comparison

https://gallery3.mikrokopter.de/var/albums/tech/MK3644_6S_TvsI_Compare_12-15.gif?m=1412677197https://gallery3.mikrokopter.de/var/albums/tech/MK3644_6S_12_TvsI_PropCompare_0-10A.gif?m=1412677207

(full range and 0-10A range)

MK3644/24 Thrust vs Setpoint

https://gallery3.mikrokopter.de/var/albums/tech/MK3644_6S_12_TvsS_PropCompare.gif?m=1412678531

MK3638 4S

https://gallery3.mikrokopter.de/var/albums/tech/MK3538_characteristic_curve.gif?m=1409673363

Altigator A5050

Successfuly Tested on BL V3 (Firmware 1.10)

Altigator A5050 16x5 XOAR 4S

https://gallery3.mikrokopter.de/var/albums/tech/Altigator_A5050_4S_16x5_TvsI.gif?m=1413802701

https://gallery3.mikrokopter.de/var/albums/tech/Altigator_A5050_4S_16x5_TvsS.gif?m=1413802706

Altigator A5050 16x6 XOAR 4S

https://gallery3.mikrokopter.de/var/albums/tech/Altigator_A5050_4S_16x6_TvsI.gif?m=1413802709

KDE3520XF/400kV

Successfuly Tested on BL V3 (Firmware 1.10)

https://gallery3.mikrokopter.de/var/resizes/tech/KDE3520XF_400kV_Eprop-01.jpg?m=1413884213

KDE3520XF/400kV 14x8" Eprop 6S

https://gallery3.mikrokopter.de/var/albums/tech/KDE3520XF_400kV_14x8Eprop_6S_TvsI-01.gif?m=1413800269

https://gallery3.mikrokopter.de/var/albums/tech/KDE3520XF_400kV_14x8Eprop_6S_TvsS-01.gif?m=1413800277

https://gallery3.mikrokopter.de/var/albums/tech/KDE3520XF_400kV_14x8Eprop_6S_Effectivity-01.gif?m=1413800274

KDE3520XF/400kV 15x5" 6S

https://gallery3.mikrokopter.de/var/albums/tech/KDE3520XF_400kV_15x5_6S_TvsI.gif?m=1413800660

https://gallery3.mikrokopter.de/var/albums/tech/KDE3520XF_400kV_15x5_6S_TvsS.gif?m=1413800664

KDE3520XF/400kV 16x5,5" 6S

https://gallery3.mikrokopter.de/var/albums/tech/KDE3520XF_400kV_16x5_6S_TvsI.gif?m=1413800669

KDE4012XF/400

Successfuly Tested on BL V3 (Firmware 1.10)

KDE4012XF_400 16" 6S

https://gallery3.mikrokopter.de/var/albums/tech/KDE4012XF_400_16_6S_Graf_TvsI_csv.gif?m=1413800898

https://gallery3.mikrokopter.de/var/albums/tech/KDE4012XF_400_16_6S_Graf_TvsS_csv.gif?m=1413800902

KDE4012XF_400 17" 6S

https://gallery3.mikrokopter.de/var/albums/tech/KDE4012XF_400_17_6S_Graf_TvsI.gif?m=1413801158

KDE4012XF_400 18" 6S

https://gallery3.mikrokopter.de/var/albums/tech/KDE4012XF_400_18_6S_Graf_TvsI.gif?m=1413801161

https://gallery3.mikrokopter.de/var/albums/tech/KDE4012XF_400_18_6S_Graf_TvsS.gif?m=1413801167

KDE4014XF/380

Successfuly Tested on BL V3 (Firmware 1.10)

https://gallery3.mikrokopter.de/var/resizes/tech/KDE4014XF-380_18_6S_1.JPG?m=1413801490

Compare to MK3644

https://gallery3.mikrokopter.de/var/albums/tech/KDE4014_vs_MK3644.gif?m=1413801391

https://gallery3.mikrokopter.de/var/albums/tech/KDE4014XF-380_16_6S_graph_TvsI.gif?m=1413801396

KDE4014XF/380 16" 6S

https://gallery3.mikrokopter.de/var/albums/tech/KDE4014XF-380_16_6S_graph_TvsI.gif?m=1413801396

https://gallery3.mikrokopter.de/var/albums/tech/KDE4014XF-380_16_6S_graph_TvsS.gif?m=1413801399

KDE4014XF/380 17" vs. 18" 6S

https://gallery3.mikrokopter.de/var/albums/tech/KDE4014XF-380_17And18_6S_graph_TvsI_Compare.gif?m=1413801486

KDE4014XF/380 18" 6S

https://gallery3.mikrokopter.de/var/albums/tech/KDE4014XF-380_18_6S_graph.gif?m=1413801494

https://gallery3.mikrokopter.de/var/albums/tech/KDE4014XF-380_18_6S_graph2.gif?m=1413801981

T-Motor U5/400

Successfuly Tested on BL V3 (Firmware 1.10)

T-Motor U5/400 16"

https://gallery3.mikrokopter.de/var/albums/tech/U5_16x55_6S-01.gif?m=1413802197

T-Motor U5/400 18"

https://gallery3.mikrokopter.de/var/albums/tech/U5_400_18_Critical2-01.gif?m=1413802206

https://gallery3.mikrokopter.de/var/albums/tech/U5_400_18_Critical-01.gif?m=1413802201

Note: In combination of 18" and 6S Lipo, the motor starts to generate commutation problems at higher currents. We recommend to operate this motor max. with 17" or better with 16" Propellers

T-Motor U7/490

Successfuly tested on BL V3 (Firmware 1.10)

The U7/490 runs perfectly on the BL V3, but we would recommend to select a lower rpm/V and run them on 6S.

T-Motor U7/490 13" 6S

https://gallery3.mikrokopter.de/var/albums/tech/U7_490kV_4S_16x55_TvsS.gif?m=1413883146

https://gallery3.mikrokopter.de/var/albums/tech/U7_490kV_6S_13_TvsS.gif?m=1413883153

T-Motor U7/490 15x5,5" 4S

https://gallery3.mikrokopter.de/var/albums/tech/U7_490kV_4S_15x55_TvsI.gif?m=1413882881

https://gallery3.mikrokopter.de/var/albums/tech/U7_490kV_4S_15x55_TvsS.gif?m=1413882885

T-Motor U7/490 16x5,5" 4S

https://gallery3.mikrokopter.de/var/albums/tech/U7_490kV_4S_16x55_TvsI.gif?m=1413882890

T-Motor U7/490 17x5,8" 4S

https://gallery3.mikrokopter.de/var/albums/tech/U7_490kV_4S_17x58_TcsI.gif?m=1413883265

https://gallery3.mikrokopter.de/var/albums/tech/U7_490kV_4S_18_%2842ALimit%29_TvsS_csv.gif?m=1413883557

T-Motor U7/490 18" 4S

/!\ Note: the 490rpm/V in combination with 18" Prop results in overcurrent (higher that 45A)

BL-Firmware 1.06

https://gallery3.mikrokopter.de/var/albums/tech/U7_490kV_4S_18_TvsI.gif?m=1413802446

BL-Firmware 1.10: https://gallery3.mikrokopter.de/var/albums/tech/U7_490kV_4S_18_TvsI_V1_10.gif?m=1413883274

https://gallery3.mikrokopter.de/var/albums/tech/U7_490kV_4S_18_%2842ALimit%29_TvsS_csv.gif?m=1413883557

T-Motor U8/135

Successfuly Tested on BL V3 (Firmware 1.10))

T-Motor U8/135 28" 6S

https://gallery3.mikrokopter.de/var/albums/tech/U8_28_135kV_6S_Test4_up_down.gif?m=1413802455

https://gallery3.mikrokopter.de/var/albums/tech/U8_28_135kV_6S.jpg?m=1413802451