Difference between revisions of "Solar-Storm"
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Solar Storm is the result of a conceptual design study for a Hybrid-Solar cell powered MAV. And as far as I can search through the internet Solar Storm is the smallest solar MAV (which is autonomous) in the world | Solar Storm is the result of a conceptual design study for a Hybrid-Solar cell powered MAV. And as far as I can search through the internet Solar Storm is the smallest solar MAV (which is autonomous) in the world (please correct me if I am wrong...). | ||
more coming... | more coming... | ||
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[[Image:SolarStorm1.jpg|Solar Storm]] | [[Image:SolarStorm1.jpg|700px|Solar Storm]] | ||
== Specifications == | == Specifications == | ||
*'''Span:''' 500 mm | *'''Span:''' 500 mm | ||
*'''Weight:''' 300 g | *'''Weight:''' 300 g | ||
*'''Solar cells:''' 20 cells, serially linked for a maximum theoretical power of 6.5W | |||
*'''MPPT:''' Custom designed Maximum Power Point Tracker | |||
== | == Performances == | ||
Solar-Storm has only 2 test flights yet. First to tune :) and second to measure the endurance. | Solar-Storm has only 2 test flights yet. First to tune :) and second to measure the endurance. | ||
The numbers we | The numbers we got from the first flight test (by using only 730mAH battery) are encouraging: | ||
*'''Endurance:''' 53 minutes | *'''Endurance:''' 53 minutes | ||
*'''Average level-flight consumption:''' 11-12 W | *'''Average level-flight consumption:''' 11-12 W | ||
*'''Average power from Solar cells:''' ~4-5 W | *'''Average power from Solar cells:''' ~4-5 W | ||
Note: It was a partially cloudy day, sun was hiding behind the clouds for 20 minutes of the flight. | Note: It was a partially cloudy day, sun was hiding behind the clouds for 20 minutes of the flight. | ||
The following plot show 7min power numbers for 7 minutes. From top to bottom, the curves show: | |||
* (purple) The voltage (V) of the solar cells array | |||
* (orange) The power (W) of the solar cells array extracetd through the MPPT. | |||
* (green) The total current (I) consumed by the whole system | |||
* (blue) The current (I) going out of the battery. | |||
[[Image:Solarplot.png|Solar Plot]] | We can observe on the last curve that the battery was sometimes charged in flight ! | ||
[[Image:Solarplot.png|700px|Solar Plot]] | |||
Solar-Storm will be capable of flying more than 145 minutes at its designed conditions. But not tested yet :) | Solar-Storm will be capable of flying more than 145 minutes at its designed conditions. But not tested yet :) | ||
Revision as of 08:53, 23 September 2009
Solar Storm is the result of a conceptual design study for a Hybrid-Solar cell powered MAV. And as far as I can search through the internet Solar Storm is the smallest solar MAV (which is autonomous) in the world (please correct me if I am wrong...).
more coming...
Specifications
- Span: 500 mm
- Weight: 300 g
- Solar cells: 20 cells, serially linked for a maximum theoretical power of 6.5W
- MPPT: Custom designed Maximum Power Point Tracker
Performances
Solar-Storm has only 2 test flights yet. First to tune :) and second to measure the endurance.
The numbers we got from the first flight test (by using only 730mAH battery) are encouraging:
- Endurance: 53 minutes
- Average level-flight consumption: 11-12 W
- Average power from Solar cells: ~4-5 W
Note: It was a partially cloudy day, sun was hiding behind the clouds for 20 minutes of the flight.
The following plot show 7min power numbers for 7 minutes. From top to bottom, the curves show:
- (purple) The voltage (V) of the solar cells array
- (orange) The power (W) of the solar cells array extracetd through the MPPT.
- (green) The total current (I) consumed by the whole system
- (blue) The current (I) going out of the battery.
We can observe on the last curve that the battery was sometimes charged in flight !
Solar-Storm will be capable of flying more than 145 minutes at its designed conditions. But not tested yet :)