Ravi, I would love to be in a position to offer kits now but we currently only have the prototype. I am working on the second one with some improvements. Having a fuselage mould will help a lot, which is my current task. Also looking at ways to make the wing saddle quicker. All I can say is watch this space.
i'm now starting to use my plane for generation of mosaics, was thinking about a simplified gimbal, with about 20 degrees of freedom for each side on pitch and roll, just to keep the camera looking down. not sure if really needed, and its much more complex than just placing the camera down on the fuse, or even ataching it to the belly with rubber bands...
It gets a bit complicated with belts. The only reason for the one I have is because I want to use a standard (not quite) servo and use a (32/20 teeth) step up to get a large rotation.
Have just ordered a HS 5245 and programmer. This should then do 180deg and with the belt drive 288deg. Im trying to keep it all small.
Am wondering about a shell/cover for the whole lot – complicated moulding.
Comments
Hi Leo . very nice build , how do you build the fuselarge ? I thought of building a 4m wing version and can take payload of 5kg . Kindly advice thanks
Ken
Leo and Vince, could you develop a composite airframe, for my needs?
Please, PM with your contacts.
Thanks!
Ravi, I would love to be in a position to offer kits now but we currently only have the prototype. I am working on the second one with some improvements. Having a fuselage mould will help a lot, which is my current task. Also looking at ways to make the wing saddle quicker. All I can say is watch this space.
Thanks for your interest.
Vince
can someone let me know what is the sourcing for holden drone airframe. i mean form where can it be bought.
Hoping to make a start on a new fuselage plug and moulds. Easier to draw than to make, unless my enquiries about 3d printing work out.
Motocalc predictions
Comparison - EAV
100m above Sea Level, 101.3kPa, 18°C
EAV
Motor Pulso 4120/20
Motor Constant (rpm/V) 465
No Load Current (A) 1.1
Armature Resistance (Ohms) 0.054
Battery RC Lab 5500
Series Cell Count 5
Parallel Cell Count 1
Cell Capacity (mAh) 5500
Pack Capacity (mAh) 5500
Cell Voltage (V) 3.7
Pack Voltage (V) 18.5
Cell Resistance (Ohms) 0.01
Pack Resistance (Ohms) 0.05
Speed Control (ESC) Castle Creations Phoenix 60
Resistance (Ohms) 0.0012
Maximum Current (A) 85
Number of ESCs 1
Drive System APC Propellers
Gear Ratio 1.00:1
Propeller (in x in) 16x10
Series Motors 1
Parallel Motors 1
Number of Propellers 1
Blades per Propeller 2
Airframe Holden Drone
Wing Span (cm) 220
Wing Area (dm²) 62
Total Weight (g) 5048
Static Predictions
Current (A) 39.0 actual 44
Motor Voltage (V) 16.5
Input Power (W) 644.0
Input Power Loading (W/kg) 127.5
Power Loss (W) 142.3
Motor/Gearbox Output (W) 501.7
Output Power Loading (W/kg) 99.3
Motor/Gearbox Efficiency (%) 77.9
Shaft Efficiency (%) 69.5
Motor RPM 6151
Propeller RPM 6151 actual-6700
Static Thrust (g) 2921 actual 4100
Pitch Speed (m/s) 26.0
Run Time (min:sec) 8:27
Flight Predictions
Stall Speed (m/s) 10.7
Optimal Flight Speed (m/s) 14
Throttle for Optimal (%) 57
Duration at Optimal (m:s) 54:46
Motor Temp at Optimal (°C) 31
Hands-off Speed (m/s) 16.7
Throttle for Hands-off (%) 66
Duration Hands-off (m:s) 41:50
Motor Temp Hands-off (°C) 33
Best Rate of Climb (m/s) 4.60
Rate of Sink (m/s) -1.22
Note: Motor performance calculations take ambient temperature and heating effects into account.
Generated by MotoCalc 8.08, 21/12/2012 17:25.
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Now getting 4.1Kg static with a 16x10 prop 6700rpm 44A 5cell.
Leo, how's the gimbal going?
i'm now starting to use my plane for generation of mosaics, was thinking about a simplified gimbal, with about 20 degrees of freedom for each side on pitch and roll, just to keep the camera looking down. not sure if really needed, and its much more complex than just placing the camera down on the fuse, or even ataching it to the belly with rubber bands...
Just love CAD
Interesting vids.
It gets a bit complicated with belts. The only reason for the one I have is because I want to use a standard (not quite) servo and use a (32/20 teeth) step up to get a large rotation.
Have just ordered a HS 5245 and programmer. This should then do 180deg and with the belt drive 288deg. Im trying to keep it all small.
Am wondering about a shell/cover for the whole lot – complicated moulding.
Perhaps I should start a new blog
https://www.youtube.com/watch?v=ceca7eIGciw&feature=youtube_gdat...
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