# problem in operation of drone

Discussion in 'Homework Help' started by irfanraza, Nov 13, 2009.

1. ### irfanraza Thread Starter New Member

Nov 13, 2009
1
0
I attach a solar panel to a drone. I have a plate of 18V maximum output voltage of 21.60 V open circuit voltage, 2.25 W of power, of 0.137 A short circuit current of 0,125 A maximum output current. The plane has a small electric motor which is fed by a battery Ni-MH 650mAh and 9.6V.
He understood that it was sufficient that the board had a higher voltage to the plane, but I tried connecting the plane and got no response.
What can I do?

Thanks.

2. ### Papabravo Expert

Feb 24, 2006
10,021
1,757
650 mAh is the capacity of the battery. It is mA times hours. If the motor requires 650 mA to run then the 9.6V battery will last 1 hour. That is 650 mAh. If the motor requires 650 mA to run then the solar panel has no chance to run the motor.

BTW 9.6V * 0.65A = 6.24 Watts => solar panel has no chance to run the motor => there is nothing you can do except find a way to up the current from the solar panel or change panels for one with more capability.

3. ### Audioguru New Member

Dec 20, 2007
9,411
895
My electric model airplane used an 8.4V/650mAh Ni-MH battery to power its 5A motor for about 5 minutes for each charge. Your solar panel provides only 1/40th of the required current for my airplane.

Now I am using two Lithium-ion cells (7.4V total/2200mAh) from a laptop pc which provide about the same weight but they produce much more power for about 20 minutes per charge. The motor is very hot after a flight.

Last edited by a moderator: Nov 15, 2009