which class are you in??

I am 12 years old and I am in class 8. This hobby is a way of keeping my thinking power concentrated on one thing.

i am in 9th.
i am going through FA3. last on monday!
after that will repair my avispad.
I entered the hobby when i was in 7th.

You guys are lucky that your parents supported your expensive hobby.

Well, that is true, but I chose the best bang for the busk parts. I only chose something else when there was no other way.

my father is happy to expend when i am upto something educational.
He knows my love with aviation and we are planning the best way for me to become an commercial or a iaf pilot 5 years later.
And BTW for my 1st plane, i saved the money my self.

Thats a great great dad . And it means you get pocket money.
Lucky one

Thats a great great dad . And it means you get pocket money.
Lucky one

Thats a great great dad . And it means you get pocket money.
Lucky one

Thats a great great dad . And it means you get pocket money.
Lucky one

Allright.
lets get back to kartick 's topic.
why post 4 times?

My wap connection . Admin help

The solar cells are working fine. Don't expect the test results any time soon. It is a bit cloudy here, so we have to wait till the clouds clear.

Hello guys,
It is still cloudy and rainy in Madurai, which means that I did not have a chance to test the solar cells. I will not be purchasing the motor because I have not come to a firm decision on which airframe to use. I will properly test the solar cells soon. I have also found this nice setup made just to test solar cells. It is feasible and easy for me as I need not buy anything more. I have a background in electronics(one of my hobbies) and I am familiar with the Arduino which is used in this setup. You can check it out here:http://www.engineersgarage.com/contribution/solar-panel-parameters-monitoring-using-arduino. I will be modifying this setup to include a fan and an SD card shield to record data every 20 minutes.

 I am yet to purchase:
20 cells(for 3S) / 11 cells(for2S)
Heat shrinks
Bullet connectors
Hot glue gun

There are some important and essential components which are waiting for me in Singapore. I will be in posession of them in the 3rd week of December.

My future plan:
1. Test the solar cells
2. Get loads of practice on the Nutball

To continue any further in this project, we will have to decide on the airframe. I don't know whether to continue with a large Nutball or to design a Kfm-4 based flying made especially for this project.

For 2S:
Diameter of the Nutball will be : 34"
Wingspan of the flying wing will be: 50"

I have planned to use a DT750 for both the setups.

But all this is not for sure as we do not know the true performance of the solar cells. Please give me some answers. I am confused  .Also, please tell me whether to use these 6x6 cells or maxeon cells (refer reply #98 )

Regards,
Karthick Ashwath.

Can you build this:
http://www.rcgroups.com/forums/showthread.php?t=2055551
It is damn slow and has a wing with no curved surfaces on top.
You can see the images.
It uses the same motor as yours.
 
wing- 60"x20"
I think i would suit your needs.

just read the build thread and clear all doubts before going on to build/Experiment!

Yes It is a good idea. I will make one (it is very simple) but I don't know where to get DollarTree foam board(that type). I can only get Elmer's acid free foam board which is a lot heavier but much stronger. It is not much of a problem as the DT750 has lots of extra thrust and a bit of strength is not bad. But I don't know whether I will be able to fit 25 cells. I can fit only 20 cells in a 60" by 12" rectangle. Where do I fit the other 5 cells? I also don't know what prop to use. The build process is perfect for a beginner.If we increase the fuselage width to 6" from 5", we can fit the other 5 cells. Thanks.
Regards,
Karthick Ashwath.

you can use depron.
I used Depron for my old fogey.
Just increase the wing length from 60 to 66.
I figure out that u have cells of 6"x6".
so 180 sq. inch of space is reqd. further.
so, increasing wing length to 76inch shoul do.

OR you may scale up the plans

yup, you can increase the fuse length if you want but for that, compensate by adding few inches to the wing length.
Prop can be decided later on according to A.U.W.
This plane would be excellent!

If I increase the wingspan to 72" and the fuse width to 6" I will be able to fit 25 cells if not more.The other option is to leave the measurements exactly as they are but ise 6x6 cells in the 12" part pf the wing and cover the 5" and 3" parts with 3x6 solar cells.

What do you mean by:
" I will be able to fit 25 cells if not more."

I will post clarifications in a second.

I have gone for a change of plans. I am not going to change any measurements to accommodate more cells. Instead, I will be putting 3x6 solar cells in the 3" and 5" parts of the wing and 6x6 cells in the 12" part of the wing. This means that I will be able to fit

12/6*60/6 = 2* 10 = 20 6x6 solar cells
3" part of the wing one set of 3x6 solar cells (10 cells)
5" part of the wing one more set of 3x6 solar cells (10 more cells)

So in total we will be able to fit 20 6x6 solar cells and 20 3x6 solar cells.

So at any given time, we will be producing :
3.5W per 6x6 cell(actually 4.3 W, but it will not produce this power on less sunny days)

1 W per 3x6 cell(actually 1.

So at any given time, we will be producing at least 20*1 + 3.5*20 = 20*4.5 = 90W

So there will be enough and more power to power the motor at full throttle and also charge the battery.(power of the motor on 10V on a 10*5 APC prop is 86W)

excellent going.
So whats the next step?

read the posts;
may help- http://www.rcuniverse.com/forum/e-flight-power-sources-126/10594707-can-i-charge-use-lipo-battery-same-time-urgent.html
i have compleated a 360 degreee in my no. of posts