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Messages - Ivan Mile

33
Elektronika i baterije / Odg: Motori tolerancija napona
Probavao jesam, ali ovaj motor koji misliš stavit na 4S je jednostavno mali i pre slab (DYS 1804 2300KV) po eCalc u proračunu sa propelom 4x3 ide preko 130W a njemu je ograničenje 85W, na propele 4x2 (95W) a o potisku da negovorim.


Propela 4x3 proračun
Load:
3.82
C
Voltage:
15.52
V
Rated Voltage:
14.80
V
Energy:
32.56
Wh
Total Capacity:
2200
mAh
Used Capacity:
1760
mAh
min. Flight Time:
12.6
min
Mixed Flight Time:
21.3
min
Weight:
248
g
8.7
oz
[/t][/t]
Motor @ Optimum Efficiency
[/size]Current:
6.58
[/size]A
[/size]Voltage:
15.52
[/size]V
[/size]Revolutions*:
30399
[/size]rpm
[/size]electric Power:
102.0
[/size]W
[/size]mech. Power:
78.2
[/size]W
[/size]Efficiency:
76.6
[/size]%
Motor @ Maximum
[/size]Current:
8.41
[/size]A
[/size]Voltage:
15.47
[/size]V
[/size]Revolutions*:
29117
[/size]rpm
[/size]electric Power:
130.1
[/size]W
[/size]mech. Power:
96.4
[/size]W
[/size]Efficiency:
74.1
[/size]%
[/size]est. Temperature:
49
[/size]°C
[/size]
120
[/size]°F
Propeller
[/size]Static Thrust:
438
[/size]g
[/size]
15.4
[/size]oz
[/size]Revolutions*:
29117
[/size]rpm
[/size]Stall Thrust:
272
[/size]g
[/size]
9.6
[/size]oz
[/size]Thrust @ 0 km/h:
438
[/size]g
[/size]Thrust @ 0 mph:
15.4
[/size]oz






[/size]Propela 5x3
[/size][/color]
Battery
Load:
6.54
C
Voltage:
15.40
V
Rated Voltage:
14.80
V
Energy:
32.56
Wh
Total Capacity:
2200
mAh
Used Capacity:
1760
mAh
min. Flight Time:
7.3
min
Mixed Flight Time:
15.9
min
Weight:
248
g
8.7
oz
[/t][/t]
Motor @ Optimum Efficiency
[/size]Current:
6.58
[/size]A
[/size]Voltage:
15.52
[/size]V
[/size]Revolutions*:
30399
[/size]rpm
[/size]electric Power:
102.0
[/size]W
[/size]mech. Power:
78.2
[/size]W
[/size]Efficiency:
76.6
[/size]%
Motor @ Maximum
[/size]Current:
14.39
[/size]A
[/size]Voltage:
15.31
[/size]V
[/size]Revolutions*:
24933
[/size]rpm
[/size]electric Power:
220.3
[/size]W
[/size]mech. Power:
91.9
[/size]W
[/size]Efficiency:
41.7
[/size]%
[/size]est. Temperature:
118
[/size]°C
[/size]
244
[/size]°F
Propeller
[/size]Static Thrust:
627
[/size]g
[/size]
22.1
[/size]oz
[/size]Revolutions*:
24933
[/size]rpm
[/size]Stall Thrust:
487
[/size]g
[/size]
17.2
[/size]oz
[/size]Thrust @ 0 km/h:
627
[/size]g
[/size]Thrust @ 0 mph:
22.1
[/size]oz

[/size]
38
Birtija / Odg: Vic do vica
Natjecali se Amerikanac, Nijemac i Rus ko ima najveće avione pa će Amerikanac:
- Naši avioni su toliko veliki da nijedan ne može sletjeti na aerodrom u Los Angelesu.
Na to će Nijemac:
- Naši avion su toliki da nijedan ne može sletjeti na aerodrom u Frankfurtu.
A na to će Rus:
- Ja jednog dana krenuo svojim avionom sa još 22 kopilota, kad se u zadnjem dijelu aviona čulo neko zujanje. Ja reko 22. kopilotu:
- Sergej idi vidi šta je to.
Sergej otišao džipom u srijedu poslijepodne, vraća se u subotu prijepodne i reče:
- Gospodine kapetane nismo zatvorili prozor od WC-a uletio Boing 747, zuji oko žarulje.