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Old Dec 30, 2007, 01:35 AM
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Quadrocopter/tricopter NAV Lighting Ideas

Lets start a Quadrocopter/Tricopter Lighting Concept thread ...

Here's mine ...

I wanted to come up with a removable concept for Quadrocopter NAV lights for night flying only. Something that can be removed when flying during the day. The universal problem flying quadrocopters is orientation ... and it is even harder to track in the dark. I customized this solution for the X-3D Brushless Quadrocopter ... but, this can easily be adapted for other X and Y configurations as well. This is what I came up with.

Epilespy Warning: contains fast blinking lights

Video Here:
Removable Quadrocopter Lighting Boom (Flight Test) (8 min 0 sec)


Raining outside so test was done in tight quarters inside the garage.

The first part shows the different manually selectable sequencing light patterns.

The CF Ring El/Glow Wire is switchable ON/OFF via the Transmitter.

The light booms also highlight the florescent tape on the props.

Front orientation is easily visible via el/glow wire along the top front boom and all LEDs ON underneath. Rear pattern = all LEDs blinking, Left/Right pattern = LEDs strobing outward.

Happy with the results ... Gives it a nice Close Encounters look.

More info here ... http://forum.xufo.net/bb/viewtopic.php?t=8065

Lets see what others come up with ...

--Eric--
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Last edited by tend2it; Dec 30, 2007 at 04:51 AM. Reason: added warning
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Old Dec 31, 2007, 02:58 AM
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Forgot to attach some stills of the quadrocopter removable lighting boom ...

--Eric--
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Old Jan 12, 2008, 05:46 PM
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Hi,

I have lights !





















Bought the leds from www.besthongkong.com


My only gripe is that they don't flash.

Regards,
Joe Ling
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Old Jan 13, 2008, 04:13 AM
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@joeling - looks cool and really BRIGHT!

Finally got around to weighing my removable NAV Lighting Boom ... it came out to 55grams ... not too bad at all.

--Eric--
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Old May 08, 2015, 12:51 PM
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hi guys,
i m new to this..
i want to make my quad.
i have four 930 kv motors and 30 A ESC: props of 10* 4.7
my quad will weight about 1500 g (including evrything)
so pls tell me what battry should i use to have flight time of about 10-15 min.
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Old May 08, 2015, 04:24 PM
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Those are "orientation/Hey look at me" lights.

These are navigation lights: Strobon Navigation Strobes

680 Pro with Strobon Navigation LEDs (0 min 23 sec)


Tarot 680 Pro Maiden (3 min 8 sec)
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Old May 09, 2015, 07:21 AM
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hey can u help with my query
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Old May 09, 2015, 07:50 AM
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hi old gazer
can u clear my query..
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Old May 09, 2015, 10:19 AM
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Quote:
Originally Posted by nikunj sharma View Post
hi guys,
i m new to this..
i want to make my quad.
i have four 930 kv motors and 30 A ESC: props of 10* 4.7
my quad will weight about 1500 g (including evrything)
so pls tell me what battry should i use to have flight time of about 10-15 min.
Read this:

For any platform of any size and weight, the flight time is the result of:

time = whkg / (1000*R / eff_gw) * 60, where

whkg = battery energy density, in Watt hour / kg, ranging from about 150 for the high C packs to 270 for LiIons. 10C Multistars are 185.
R = ratio between AUW and battery weight
eff_gw = motor/prop efficiency, grams per Watt, taken from mfr data.
Be aware to get from table the efficiency for the intended thrust, and for 50% throttle !
Efficiency greatly depends on load, so don't use efficiency stated for 1kg, to compute flight time of 2-3 lg platform !
Also, don't use values for more than 60% throttle, the platform will be unstable, no more room for motors to do their control job....

As I wrote, this formula works for ANY size platform and energy source, lets do the math for some particular cases:

Case I Ph2
battery wh/kg = 5.2(Ah)*11.1V/0.37(kg) = 156wh/kg
R ratio between AUW and battery = 1250/370 = 3.4
propulsion efficiency = 11g/W
time = 156 / (1000*3.4 / 11) * 60 = 30 min

Case 2 the 129 min record
battery wh/kg = 266Wh/kg - typical LiIon energy density
R ratio between AUW and battery = 3.4/2 = 1.7
propulsion efficiency = 14.1g/W
time = 266 / (1000*1.7 / 14.1) * 60 = 132 min

And finally, my 30 min case
battery wh/kg = 165, I use a Zippy Compact, having a bit more energy than the average LiPo
R ratio between AUW and battery = 0.75/0.195 = 3.8
propulsion efficiency = 11g/W - using Phantom 2 clone
time = 165 / (1000*3.8 / 11) * 60 = 28 min

As you can see from the above, reasonable precision of all estimations, proving this formula is valid for any configuration, so now you have a tool that should tell you what is wrong in your setup, and where to work to improve flight time.

The biggest unknown for most users is the propulsion efficiency, for this reason I think is mandatory to not buy stuff without manufacturer precise specification of this parameter.
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The motors and ESCs you have will determine how many cells (3S, 4S, etc.) you can use. With that being the case, a 4S LiPo will give you a longer flight time than an equivalent capacity 3S LiPo.
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Old May 13, 2015, 09:47 AM
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thanx man...
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Old May 19, 2015, 03:54 PM
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i have kk2.1 board..
930 kv motor 2200 mah lipo 3s
my quadcopter drifts on the ground it self...doesnt lifts...?????
specially in the backward direction....and in right backward...
pls help me out..........
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