What is a Hybrid-Electric Propulsion?
Energy has been in the spotlight in recent years as the need for clean, renewable energy sources has taken center stage. Whether the media is covering stories about climate change, energy conservation or new forms of energy to power the future, developments in the energy sector have received a lot of attention.
Of particular note is the use of energy in the aviation industry, specifically in hybrid aircraft. These are aircraft that use more than one fuel source, and hybrid models have been used in commercial aviation as well as in military applications. Most hybrid aircraft use a mixture of traditional aviation fossil fuel sources and electric power, allowing these aircraft to take advantage of aviation technologies like hybrid-electric propulsion.
How Does Hybrid-Electric Propulsion Work?
Hybrid-electric propulsion is a form of propulsion that relies on electric power and fossil fuels. In some hybrid setups, traditional fuel handles some processes while electricity handles others. Hybrid propulsion systems may also use both types of energy simultaneously.
Typically, the electricity supplied in a hybrid-electric propulsion system will come from onboard batteries. These batteries are rechargeable, and the amount of charge they can hold depends on their size. One downside to this, however, is that batteries used in all-electric vehicles tend to be large and heavy. As a result, they can add extra weight to aircraft, potentially reducing efficiency in the process.
What are the Benefits of Hybrid-Electric Propulsion?
Hybrid-electric propulsion provides several benefits, including the lessening of carbon emissions. When an aircraft is powered by electricity alongside fossil fuels, it tends to emit less carbon compared to using only fossil fuels. This may also reduce the frequency of required maintenance since electric motors and components have fewer moving parts to repair and replace.
Additionally, hybrid-electric propulsion systems are often quieter than their traditional engine counterparts. This not only makes these aircraft good for pilot and crew communication while flying, but it may also be an advantage for stealth missions when using this technology for military purposes.
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