| |
Untitled |
Untitled |
Untitled |
| Motor |
Hacker B50 12S |
Hacker B50 12S |
Hacker B50 12S |
| Motor Constant (rpm/V) |
3033 |
3033 |
3033 |
| No Load Current (A) |
1,9 |
1,9 |
1,9 |
| Armature Resistance (Ohms) |
0,0128 |
0,0128 |
0,0128 |
| |
|
|
|
| Battery |
Sanyo 1700SCR |
Sanyo 1700SCR |
Sanyo 1700SCR |
| Series Cell Count |
14 |
14 |
14 |
| Parallel Cell Count |
1 |
1 |
1 |
| Cell Capacity (mAh) |
1700 |
1700 |
1700 |
| Pack Capacity (mAh) |
1700 |
1700 |
1700 |
| Cell Voltage (V) |
1,2 |
1,2 |
1,2 |
| Pack Voltage (V) |
16,8 |
16,8 |
16,8 |
| Cell Resistance (Ohms) |
0,004 |
0,004 |
0,004 |
| Pack Resistance (Ohms) |
0,056 |
0,056 |
0,056 |
| |
|
|
|
| Speed Control (ESC) |
On/Off Switch |
On/Off Switch |
On/Off Switch |
| Resistance (Ohms) |
0,003 |
0,003 |
0,003 |
| Maximum Current (A) |
50 |
50 |
50 |
| Number of ESCs |
1 |
1 |
1 |
| |
|
|
|
| Drive System |
|
|
|
| Gear Ratio |
6,70:1 |
6,70:1 |
6,70:1 |
| Propeller (in x in) |
16x8 |
16x10 |
17x9 |
| Series Motors |
1 |
1 |
1 |
| Parallel Motors |
1 |
1 |
1 |
| Number of Propellers |
1 |
1 |
1 |
| Blades per Propeller |
2 |
2 |
2 |
| |
|
|
|
| Airframe |
|
|
|
| Wing Span (cm) |
400 |
400 |
400 |
| Wing Area (dm²) |
70 |
70 |
70 |
| Total Weight (g) |
4992 |
4992 |
4992 |
| |
|
|
|
| Static Predictions |
|
|
|
| Current (A) |
39,7 |
46,1 |
50,2 |
| Motor Voltage (V) |
14,5 |
14,1 |
13,8 |
| Input Power (W) |
574,5 |
648,6 |
694,8 |
| Input Power Loading (W/kg) |
115,0 |
129,8 |
139,0 |
| Power Loss (W) |
75,0 |
85,5 |
93,1 |
| Motor/Gearbox Output (W) |
499,5 |
563,1 |
601,8 |
| Output Power Loading (W/kg) |
100,0 |
112,7 |
120,4 |
| Motor/Gearbox Efficiency (%) |
86,9 |
86,8 |
86,6 |
| Shaft Efficiency (%) |
74,8 |
72,8 |
71,3 |
| Motor RPM |
42139 |
40713 |
39766 |
| Propeller RPM |
6289 |
6077 |
5935 |
| Static Thrust (g) |
3108 |
3195 |
3655 |
| Pitch Speed (m/s) |
21,3 |
25,7 |
22,6 |
| Run Time (min:sec) |
2:34 |
2:13 |
2:02 |
| |
|
|
|
| Flight Predictions |
|
|
|
| Stall Speed (m/s) |
11,1 |
11,1 |
11,1 |
| Optimal Flight Speed (m/s) |
13,3 |
13,3 |
13,3 |
| Throttle for Optimal (%) |
78 |
57 |
67 |
| Duration at Optimal (m:s) |
12:31 |
10:26 |
11:36 |
| Motor Temp at Optimal (°C) |
33 |
30 |
31 |
| Hands-off Speed (m/s) |
15,9 |
15,9 |
15,9 |
| Throttle for Hands-off (%) |
93 |
67 |
80 |
| Duration Hands-off (m:s) |
10:08 |
8:50 |
9:17 |
| Motor Temp Hands-off (°C) |
36 |
31 |
34 |
| Best Rate of Climb (m/s) |
3,09 |
5,21 |
4,90 |
| Rate of Sink (m/s) |
-0,88 |
-0,88 |
-0,88 |
|