On January 29, the US Boeing Company issued a statement announcing its investment in HorizonX, a venture capital firm, to invest in a California startup, Cuberg. Cuberg is currently developing a battery made from lighter, less flame-resistant components and hopes to test the prototype later this year. Boeing’s investment in the company is considered to be the latest step in its expansion in the field of electric aircraft. Boeing HorizonX Vice President Steve Nordlund said that Cuberg's battery technology has the highest energy density currently available on the market, and its unique chemistry is expected to provide a safe and stable solution for future electric air transport. For some time, the pace of the development of electric aircraft giants in the aviation industry has been accelerating. At the end of November last year, European industrial giants Rolls-Royce, Airbus and Siemens signed a cooperation agreement to jointly develop a hybrid test machine called “E-Fan X†and hope to achieve the first test flight by 2020. Going forward, Boeing invested in a pure electric and hybrid aircraft startup called Zunum Aero, which is working to start selling hybrid aircraft by 2022. According to media reports, due to cost considerations, many American airlines are currently withdrawing from the short-haul aviation market dominated by 50 passenger aircraft. Some analysts said that in the next 15 years, the size of the electric aircraft market will exceed 22 billion US dollars. Compared with existing fuel commercial aircraft, the advantages of electric aircraft are mainly reflected in the two aspects of low cost and environmental protection. At present, international aviation fuel prices are at a high level, which obviously increases the industry's interest in electric aircraft development. Once the electric aircraft is mature, it will be very attractive in terms of cost. Previously, the two-seat electric aircraft "e-Genius" developed by German scientists conducted a test flight across the Alps. In a 100-kilometer voyage, the energy consumption of "e-Genius" was only 25 kWh of electricity. It is $3. At the same time, research shows that as a “big household†of global greenhouse gas emissions, the aviation industry emits 500 million tons of carbon dioxide per year. The International Civil Aviation Organization estimates that the carbon emissions from aircraft fuel in 2050 will reach three times the current level. In this context, the industry is generally regarded as one of the fundamental measures to reduce environmental pollution in the aviation industry. In addition, electric aircraft are also expected to change the face of the aviation industry that people are already familiar with. The electric aircraft "Taurus G4" previously developed by the Slovenian aircraft manufacturer Bat Company shows that the electric aircraft takes off for a shorter runway, the climb speed is faster, and the noise is significantly smaller than the existing aircraft, so the airport for future take-off and landing electric aircraft It can even be located in the central area of ​​the city. On the whole, the current research and development of electric aircraft is still in the early stage of acceleration, and various concept designs are being continuously introduced, but the key to achieving the leap is battery technology. According to professional analysis, the energy density of existing lithium batteries is about 1 MJ/kg, while the energy density of aviation fuel is more than 40 MJ/kg. In other words, replacing the fuel with existing battery technology, only the weight of the battery itself will place a huge burden on the aircraft. In addition to the energy density problem, batteries used in powering aircraft also need to address a range of technical issues, including life issues, stability in extreme weather conditions such as low temperatures or thunderstorms, heat dissipation issues, and public confidence in the safety of electric aircraft.
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