Hybrid drones are intended for vertical takeoff and landing capabilities, significantly reducing the risk of damage to the airframe throughout landing operations. Meanwhile, drones can be further divided into fully electrical (eVTOL) and Hybrid VTOL drones based on their propulsion system. More precisely, hybrid drones combine gasoline engines with electric motors for efficiency and emissions reduction in transportation. In contrast, fully electric models, as the name suggests, only use an electric propulsion system.
In the past few years, VTOL aircraft and hybrid vehicles have become popular in many industries and continue to progress. Hybrid drones are generally used in several industries because they are versatile solutions for harsh environments. VTOL and hybrid drones are extensively used in urban air mobility, commercial cargo transport, humanitarian missions, and, most recently, air taxis to transport humans in cities. The latest innovations in power systems, propulsion systems and advanced materials advance their competence and sustainability. This new industry is changing how we travel and the transportation of goods.
This blog will discuss how hybrid drones will shape the future of aviation and why they are transforming industries such as farming, defense, logistics and emergency aid.
There is a slight difference between hybrid drones and fully electric drones. The hybrid ones combine traditional internal combustion engines with electric motors or generators. VTOL is the short form of Vertical Take-Off and Landing. The vertical phase uses electric propulsion systems. This is because of the vehicle's dynamic response in vertical mode, which needs actuators with a fast response time to control the vehicle in a stable position, which can be attained using an electric propulsion system. However, when the vehicle switches to forward mode, the Hybrid VTOL uses a fuel engine. This use of fuel engines in horizontal mode can have several benefits.
Instead, fully electric VTOLs rely on electric motors both in vertical and horizontal mode. Therefore, they only gain power from batteries. At present, batteries' energy density limits the range and endurance of fully electric VTOLs compared to their hybrid counterparts. So, they cannot fly long distances.
Here, we will discuss a few advantages of hybrid drones that can be applied to security and surveillance operations.
An advantage of hybrid drones is the extended flight time. Fixed-wing drones, which use the lifting force that moves with their wings, have reached a point where they reduce energy consumption, which is essential to upholding a stable flight using the lift force on the wings. Therefore, not only does the aerodynamic design of drones in horizontal mode let them cover more areas in one flight than multi-rotor drones, but fuel engines, compared to electrical motors powered by batteries, extend the flight time even more.
Payload capacity is the maximum weight of extra equipment, cargo, sensors, or other things a drone can carry, and it is significant in several application For instance, carrying a higher payload means installing a bigger camera with higher resolution for aerial photography or carrying more water or seed for agricultural applications. Considering the same flight time, hybrid drones have a higher maximum payload capacity than fully electric drones.
All the benefits ultimately bring about higher efficiency for hybrid drones. In several applications, because of the low flight time and the small payload capacity, you need to land the drone, reload, and then take off again to complete the mission. This adds extra operation time and some risks, as the take-off and landing phases are where most aerial crashes happen.
Furthermore, considering the fully electric drones that use the battery as an example, they need to land after a while to swap or recharge the battery. So, you have to either have multiple backup batteries to decrease the time between flights, expensive or recharge the battery, which takes some time. Overall, these progressions are not only enhancing operational flexibility but also causing innovation in aerial mobility and unmanned aviation applications.
This compatibility is significant for applications such as urban air mobility, which uses small aircraft to move people around cities; precision agriculture, which uses GPS, sensors, and data analysis to advance how crops are grown on farms; and infra inspection, which comprises roads, buildings, bridges, and utilities to make sure they are safe, working well, and meeting regulations.
The emergence of hybrid drones represents a special advance in aviation technology, depicting unparalleled efficiency in air operations. These planes, which are intended to take off and land straight up without an airport, can transform various industries. From emergency response and infrastructure inspections to surveillance and logistics, VTOL drones can change how we approach air missions.
In emergencies, hybrid drones can be deployed to affected areas and perform search and rescue, finding life and transporting important equipment. Infra inspections are a versatile tool for obtaining the position of pipelines and power lines, helping recognize potential hazards.
Furthermore, hybrid drones revolutionize industries, such as agriculture. They can be used for precision monitoring, spraying, and crop mapping, significantly impacting users' work speed and productivity. They bring new prospects and allow faster transport of goods in urban environments.