The support in front of the solar cell sail panel is made of shape memory alloy. The shape memory alloy can remember its shape at a certain temperature, which is also an effect caused by the phase change mechanism. When the ambient temperature of use changes and reaches a certain temperature, it will automatically stretch according to the initially set shape. Solar cell panels used on spacecraft are made of shape memory alloys. When the spacecraft is irradiated by the sun after takeoff and the temperature reaches a certain value, it automatically deploys and starts to work.
First, the mass of gasoline will increase the cost and difficulty of launching. Data shows that each gram of thrown object will consume 1 kg of fuel, which is not worth the loss.
>Second, gasoline will create dangerous conditions during the throwing processcement.
If the third satellite needs electricity and uses gasoline, it must then be converted to electricity. Next, the satellite must carry a small generator. an oxygen tank (otherwise, how can it burn gasoline in space?) This is almost impossible, and the exhaust gases emitted from combustion will produce a reaction force on the satellite, affecting its orbit
In comparison, solar panels are lightweight and energy can be obtained from the sun almost all the time. There are no batteries in space. If the panel is covered in ash, of course you should choose it.
Another point. is that the phrase "use the electrical energy stored in the solar panel as energy" does not serve as a conversion function for energy, the solar panel only absorbs light and is not used for energy storage. energy. All real satellites carry batteries.