Unmanned aerial vehicle dynamic performance of the system development need to pay attention to what factors
if you want to push the development of unmanned aerial vehicle (uav) flight performance, the volume of the battery must be more and more small, the weight must be more and more light. When it comes to power density, we can see that we have reached a certain limit. Lithium polymer (Li-Po)And lithium ion battery,Li-ion)Volume has become very small, the price also in the range of people inherit, it is mainly the result of the mobile phone industry leading. So this type of battery is widely used, can now be fair to say that the vast majority (96%)Drone use battery as a power source.
if it's just for eppo unmanned aircraft power system and increase the quantity of the battery, it doesn't prolong the time of flight and extend its load capacity. In view of the present situation of the specific energy, to achieve higher payload and longer time of flight need to consider some things: quality than can (Per unit mass of energy)And volume ratio (With the energy per unit volume)。
just consider the energy source is not the right way, because the entire system (Energy + propulsion system)Will affect the performance of the flight. If propulsion system (Such as turbine or fuel cell)Very heavy, has the extremely high energy density source (Such as kerosene or H2)Does not have what effect.
the efficiency of the propulsion system factors also are very different: the battery power supply system will be 73% of the energy into the power, fuel cell will be 44% of the energy into the power, and the combustion engine is only 39% of the energy is converted into power.
the other factors that affect energy use is its intended mission. Should unmanned aerial vehicle (uav) flight for longer periods of time or carry a higher load? Unmanned aerial vehicle (uav) should be limited within the radius of the flight or in the far above the clouds flying? These problems has great effect on the use of energy, different operation schemes to choose different sources of energy.
