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see also: * FlugZeit * [[en/FlightTime|FlightTime]] |
see also: FlugZeit [[en/FlightTime|FlightTime]] <<TableOfContents>> |
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= MK3644 = <<TableOfContents>> |
= How to read the curves = With this curves it is easy to estimate the needed current and even estimate the flight-time. |
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= Thrust courves of different motors = * How to read the courves is described here: [[en/FlightTime#how_to_read_the_curves|How]] * please note that the unit of the current s in 10mA - that means: 100 is 1A and 1000 is 10A |
* please note that the unit of the currents are in the most graohs in 10mA - that means: 100 is 1A and 1000 is 10A |
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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|{{http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=67421}}]] 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 |
see also: FlugZeit FlightTime
Inhaltsverzeichnis
Test setup
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)
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
MK3644/24 13" Prop 25V
MK3644/24 14" Prop 25V
MK3644/24 15" Prop 25V
MK3644/24 Propeller comparison
(full range and 0-10A range)
MK3644/24 Thrust vs Setpoint
MK3638 4S
Altigator A5050
Successfuly Tested on BL V3 (Firmware 1.10)
Altigator A5050 16x5 XOAR 4S
Altigator A5050 16x6 XOAR 4S
KDE3520XF/400kV
Successfuly Tested on BL V3 (Firmware 1.10)
KDE3520XF/400kV 14x8" Eprop 6S
KDE3520XF/400kV 15x5" 6S
KDE3520XF/400kV 16x5,5" 6S
KDE4012XF/400
Successfuly Tested on BL V3 (Firmware 1.10)
KDE4012XF_400 16" 6S
KDE4012XF_400 17" 6S
KDE4012XF_400 18" 6S
KDE4012XF/400
Successfuly Tested on BL V3 (Firmware 1.10)
Compare to MK3644
KDE4012XF/400 16" 6S
KDE4012XF/400 17" vs. 18" 6S
KDE4012XF/400 18" 6S
T-Motor U5/400
Successfuly Tested on BL V3 (Firmware 1.10)
T-Motor U5/400 16"
T-Motor U5/400 16"
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)
T-Motor U7/490 18"
T-Motor U8/135
Successfuly Tested on BL V3 (Firmware 1.10))