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Author Topic: F-16 fuselage  (Read 81424 times)

Offline simpit

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Re: F-16 fuselage
« Reply #375 on: November 08, 2017, 06:46:28 AM »
Very nice.

I like the switching box. I think I am following your lead on that. Do you have pictures of other parts of your powering circuit, especially how are you branching out from the main supply wire.

Cheers

Tulkas

Hi Tulkas,

see the picture above in my post from 3. September 2017 (http://www.viperpits.org/smf/index.php?topic=10598.msg162073#msg162073). there you perfectly see the methode of wiring. Rebuild it on your own risk  ;) - im not an expert in electric skills (ask henkie!!!).

@henkie:

After connecting serveral real panels I have a strong impact of voltage at the end of my 1,5m - 2 m long wire (1,5mm diameter), due to the resistance of the wires and the low voltage of 5V. Every panel leeches about 1 Amp current. I think there will be no other way as to install for every panel a separate wire. What do you think?

Have a nice day

Hans Dieter

Offline henkie

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Re: F-16 fuselage
« Reply #376 on: November 08, 2017, 03:58:11 PM »
Indeed, easy wiring if going from one panel to the next panel.
But easy and good is not always going well together  :whistle:

Assume you have five "consumers", and each consumer draws 1 Amp.
The wires to the last consumer only have to transport 1 Amps, but the wires going to the one-but-last needs to transport the current for the one-but-last *plus* the last consumer, thus 2 Amps.
So, if you have five consumers, the wires from the power source to the first consumer must be rated for 5 Amps (at least).

Also, always keep in mind that high currents *require* low resistance in its connection(s).
Ohm's law makes this clear. In the following formulas U stand for Volts, I stands for current (Amps) and R stands for resistance (Ohms). P stands for power or energy.
Ohm's law says U = I * R  (1)    and  P = U * I   (2)
So, if you you have a connector transition resistance of "just" 0.1 Ohm your voltage drop across that connection will be according to formula (1): U = 5 Amps * 0.1 Ohm = 0.5 Volt.
You can see that as current increases the voltage drop (loss) will also increase.

But there is an other aspect that might be even more important, and that is energy (read: heat due to losses). Using formula (2) and substituting U using formula (1) you get
P = (I * R) * I = I^2 * R. Thus, energy loss increases linearly when the resistance increases, but the loss increases with the square of the current.
In the above example, current is 5 Amps and resistance is 0.1 Ohm. The energy loss will be 5^2 * 0.1 = 2.5 Watt. That 2.5 Watt will cause the connection to become "hand-warm".
If the current is higher you could risk some charring or even a fire!

Conclusion.
Try to keep currents low. That minimizes loss (voltage drop) and energy loss (heat development).
So, it would be better to wire each panel directly to the power source. I know, that is more wiring, but as I said easy and good not go well together  ;D

Especially with *real* panels. Those bulbs for backlighting do suck some *real* juice!
Measurements of a pit with all panels real show a total current of 30+ Amps at 5V!  ::)
Obviously thát current requires (very) good handling ...

Offline Rufus

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Re: F-16 fuselage
« Reply #377 on: November 08, 2017, 09:04:23 PM »
Well explained, Henkie... :thumbsup: ...this is info we can all use!
- Rufus

Offline simpit

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Re: F-16 fuselage
« Reply #378 on: December 13, 2017, 03:59:14 PM »
The current status of my project:

Have a nice day

Hans Dieter

Offline Marvin

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Re: F-16 fuselage
« Reply #379 on: December 13, 2017, 04:07:18 PM »
Outstanding!
" Where's the KABOOM! "

Windows 8.1 64 bit, Intel Core i7 - 5820K CPU (3.30GHz 6-cores, 15MB Cache, Overclocked up to 3.8 GHz w/ Turbo Boost), 32.0 GB Quad Channel DDR4 at 2133MHz, 128GB SSD 6Gb/s Main + 2TB 72

Offline Kukki

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Re: F-16 fuselage
« Reply #380 on: December 13, 2017, 05:00:41 PM »
Amazing work Simpit  :thumbsup: :thumbsup: :thumbsup: :thumbsup: :thumbsup: TOP Work man, and what a speed you work in metal with.

Keep up the GREAT work my friend  :vprules: :beer:
Kukki - (Skype: kukki_22)

Offline wralex

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Re: F-16 fuselage
« Reply #381 on: December 13, 2017, 07:29:56 PM »
Very nice Simpit.

When did you expect the delevery to my house?  :whistle: :thumbsup:

Online atsalis_p

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Re: F-16 fuselage
« Reply #382 on: December 14, 2017, 01:08:15 AM »
BEAUTY!!...  :thumbsup:
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Offline Ugamanuga

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Re: F-16 fuselage
« Reply #383 on: December 14, 2017, 03:33:36 AM »
Outstanding Job!  :clap:

Btw, wouldn't it be easier and cheaper to deliver it to my house  instead of wralex's one?  :whistle:

Offline simpit

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Re: F-16 fuselage
« Reply #384 on: December 14, 2017, 06:34:48 AM »
@wralax + Ugamanuga: As soon as I won´t be able to enter the cockpit anymore  :whistle:  ;)

@ kukki: With your support next week I´ll post new pictures with the installed armrests: thanks again!!
Have a nice day

Hans Dieter

Offline simpit

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Re: F-16 fuselage
« Reply #385 on: December 24, 2017, 06:56:04 AM »
As promised (PM to Kukki) here the first step to install the arm rests. Notice the front arm rest and the fixing bars. Think the construction  is strong enough to withstand a rested arm.

Hope to be able to implement the rear arm rest during the next days!

Thanks again Kukki for the support!
Have a nice day

Hans Dieter

Offline Kukki

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Re: F-16 fuselage
« Reply #386 on: December 24, 2017, 08:22:01 AM »
Fantastic Simpit, looks super good, and to be honest I almost never use my wrist rest (not pulling 9 G´s)  :harhar:
But tha arerest I use all the time.

Merry Christmas to you too my friend  :thumbsup:
Kukki - (Skype: kukki_22)

Offline tiger-31

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Re: F-16 fuselage
« Reply #387 on: December 24, 2017, 12:29:18 PM »


Thanks again Kukki for the support!

Was that pun intented?  :reading:

Offline simpit

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Re: F-16 fuselage
« Reply #388 on: December 26, 2017, 04:57:02 AM »
Some parts were from Kukki!
Have a nice day

Hans Dieter