| |
Microjet S400 6x3 3S |
Microjet 16-15-2 Prop |
Microjet S400 Gunther 3S |
| Motor |
Graupner Speed 400 6V #3321 (cat) |
Mega ACn 16-15-2 |
QRP Hyper 400 6V |
| Motor Constant (rpm/V) |
3097 |
4600 |
2672 |
| No Load Current (A) |
0.7 |
2.97 |
0.89 |
| Armature Resistance (Ohms) |
0.269 |
0.012 |
0.254 |
| |
|
|
|
| Battery |
Hyperion HP-LVX0800 |
Hyperion HP-LVZ2000 |
Hyperion HP-LVX0800 |
| Series Cell Count |
3 |
3 |
3 |
| Parallel Cell Count |
1 |
1 |
1 |
| Cell Capacity (mAh) |
800 |
2000 |
800 |
| Pack Capacity (mAh) |
800 |
2000 |
800 |
| Cell Voltage (V) |
3.7 |
3.7 |
3.7 |
| Pack Voltage (V) |
11.1 |
11.1 |
11.1 |
| Cell Resistance (Ohms) |
0.021 |
0.0084 |
0.021 |
| Pack Resistance (Ohms) |
0.063 |
0.0252 |
0.063 |
| |
|
|
|
| Speed Control (ESC) |
Castle Creations Pixie 20P |
Hyperion 50A |
Castle Creations Pixie 20P |
| Resistance (Ohms) |
0.0025 |
0.0025 |
0.0025 |
| Maximum Current (A) |
20 |
50 |
20 |
| Number of ESCs |
1 |
1 |
1 |
| |
|
|
|
| Drive System |
Graupner 6x3 Folding Prop |
APC Speed 4.1X4.1 |
Gunther 125x110mm |
| Gear Ratio |
1.00:1 |
1.00:1 |
1.00:1 |
| Propeller (in x in) |
6x3 |
4.1x4.1 |
4.9x4.3 |
| Series Motors |
1 |
1 |
1 |
| Parallel Motors |
1 |
1 |
1 |
| Number of Propellers |
1 |
1 |
1 |
| Blades per Propeller |
2 |
2 |
2 |
| |
|
|
|
| Airframe |
Microjet |
Microjet |
Microjet |
| Wing Span (cm) |
66 |
66 |
66 |
| Wing Area (dm²) |
10.2 |
10.2 |
10.2 |
| Total Weight (g) |
425 |
564 |
425 |
| |
|
|
|
| Static Predictions |
|
|
|
| Current (A) |
12.0 |
51.1 |
10.2 |
| Motor Voltage (V) |
10.3 |
9.7 |
10.4 |
| Input Power (W) |
123.7 |
494.6 |
106.8 |
| Input Power Loading (W/kg) |
291.0 |
875.6 |
251.4 |
| Power Loss (W) |
72.9 |
68.2 |
44.3 |
| Motor/Gearbox Output (W) |
50.8 |
426.4 |
62.5 |
| Output Power Loading (W/kg) |
119.5 |
754.8 |
147.1 |
| Motor/Gearbox Efficiency (%) |
41.0 |
86.2 |
58.5 |
| Shaft Efficiency (%) |
38.1 |
75.2 |
55.0 |
| Motor RPM |
13925 |
40782 |
17854 |
| Propeller RPM |
13925 |
40782 |
17854 |
| Static Thrust (g) |
276 |
823 |
224 |
| Pitch Speed (m/s) |
17.7 |
70.8 |
32.5 |
| Run Time (min:sec) |
4:00 |
2:21 |
4:41 |
| |
|
|
|
| Flight Predictions |
|
|
|
| Stall Speed (m/s) |
9.5 |
10.9 |
9.5 |
| Optimal Flight Speed (m/s) |
13.1 |
15.1 |
13.1 |
| Throttle for Optimal (%) |
57 |
30 |
49 |
| Duration at Optimal (m:s) |
20:49 |
45:35 |
23:28 |
| Motor Temp at Optimal (°C) |
40 |
35 |
41 |
| Hands-off Speed (m/s) |
13.1 |
15.1 |
13.1 |
| Throttle for Hands-off (%) |
57 |
30 |
49 |
| Duration Hands-off (m:s) |
20:49 |
45:35 |
23:28 |
| Motor Temp Hands-off (°C) |
40 |
35 |
41 |
| Best Rate of Climb (m/s) |
4.04 |
20.13 |
4.13 |
| Rate of Sink (m/s) |
-1.55 |
-1.79 |
-1.55 |