Re: solar project and I got myself into a pickle...I need some help

Forget about the 22A drain, pick another motor.
Try a low power Astro Colbalt motor for a glider(more efficient). This will only keep the glider air born since you will not harness
the power for a 22A motor.
Hi-Start lauch, and no batteries. They add weight. Gliders with motors just use the availble power to climb to altitued and thats
it.
I believe the AMA mag had someones design for a solar glider. The wings were completely covered. Not sure when, 92' or some where
around then.
Hope this helps.

Cheers

"mattsimonton" <mattsimonton@xxxxxxxxxxxxx> wrote in message
news:a3df3096e6e11add01d14aa93cd476de@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> my project is to build an all solar enduro electric glider. I have figured
> out the air frame and I need to figure out the electronics. for anyone
> who knows rc planes I am using the Great planes 400gd electrifly system
> that is rated 7.2-8.4 volts
> max continuous amps:22A max
> internal resistance is .0036( i dont know the unit)
> I was thinking of using 30 solar cells (15 in series with an additional
> cell in parallel) 15 cells equal 7.5 volts at 7500ma
> I was hoping running the second set of 15 cells in parrallel would
> increase my current so the motor would not overload the cells. each cell
> is rated 500ma at .5 volts.
> if this is correct( I doubt I am right about it though lol) I need to
> construct a powersource that can hold a charge of 5v at 1a for atleast
> 5minutes. (just incase I lose power from the cells)
>
> another thoery I had was to let the solar cells charge another power
> source and the motor runs off of that (ofcourse I wouldnt run the reciever
> and the motor of the same source) so that the solar cells would not be
> subejected to that type of draw.
>
> please help me in any way shape and form (I can read schematics) feel
> free to take any info and draw up shematics, because this will be entered
> into the annual sciece fair if it is successful.
> thanks alot for the help
> matt
>


.

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