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Incorporating durable hybrid energy and power sources into military UAVs

Unmanned aerial vehicles (UAVs) have become an integral part of military operations, providing valuable intelligence, surveillance, and reconnaissance capabilities. As technology advances, the future of UAVs in combat scenarios will require fully integrated, higher agility unconventional weapons and armor systems. These include electromagnetic weapons and directed energy weapon systems that can be deployed with precision and efficiency. To support the power demands of these advanced weapons and technologies, hybrid energy sources and power systems are currently the best alternative.

In a combat UAV platform, the power source consists of an energy-storage system comprising advanced batteries and high-voltage capacitors. These power sources must meet the demands of mobility, lethality, survivability, and various other functions such as command, control, communications, computers, intelligence, surveillance, and reconnaissance (C4ISR). The challenge arises when the power draw must be provided solely from energy storage systems for extended ranges and periods of time.

The continuous power requirements for a combat UAV can range from tens to hundreds of kilowatts supplied by the prime battery system. Additionally, pulsed power needs can range from a few to hundreds of megawatts depending on the loads and repetition rates. To manage these power requirements efficiently, a common power and energy management system onboard the UAV is essential to distribute electric power to various users according to a defined precedence strategy.

Designing and integrating the components for a combat-ready UAV system requires critical and enabling technologies such as high-temperature power electronics, high-energy-density batteries, high-voltage capacitors, and high-torque-density traction motors. These components need to be integrated within the power needs, loads, and size constraints of the UAV to ensure optimal performance.

One of the key challenges in integrating directed-energy weapons (DEWs) into UAVs is the power management required to support these high-energy systems. DEWs convert electrical energy into radiated energy to focus on targets and cause physical damage. The integration of high-power microwave (HPM) devices into UAVs for targeting adversarial autonomous aircraft involves complex technical challenges related to power management, targeting precision, stability, maneuverability, and potential countermeasures.

To address these challenges, a balanced approach is necessary to design and integrate power supplies and energy storage systems for military UAVs equipped with DEW systems. This approach must prioritize efficiency, reliability, and operational flexibility while considering factors such as power-to-weight ratios, energy density, thermal management, ruggedness, and resilience.

In conclusion, the successful integration of hybrid energy sources and high-performance power supplies in military UAVs will enhance operational capabilities, reliability, versatility, and endurance. By leveraging advanced technologies and innovative design strategies, future UAVs will be lighter, faster, more lethal, and sturdier, providing troops with a significant strategic advantage on the battlefield.

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