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Last month, Siemens and the European Aeronautic Defence and Space Company demonstrated a plane that was small enough to sit up to two people. The aircraft’s greatest feature was the introduction of a new hybrid electric vehicle containing two passengers. With a brigade, you can fly 900 kilometers at a time. Hybrid aircraft mainly use electric engines to fly, and gas engines are used as spares. Hybrid aircraft have two advantages: First, quiet, and second, saving 25% of energy.
For the aviation industry, this may be a major improvement. Some leading companies believe that in the future aircraft can rely partly on electricity. Although the new technology was initially used on small aircraft, it was ultimately expected to reduce passenger aircraft noise and exhaust emissions.
Frank Anton, Head of the Siemens Hybrid Aircraft Program, said: “We will eventually see hybrid electric aircraft entering the market within 2020.†He said that during this time it was possible to see 4 hybrid aircraft, 19 aircraft. To be after 2020. Anton also predicted that the next 100 hybrids will use only half the fuel today.
On Boeing 737s, Boeing has deepened the concept of hybrid aircraft, with 737s having 150 seats. Unfortunately, the 737s will not formally enter service until 2030. EADS is the parent company of Airbus. It has designed a concept passenger aircraft and uses only electric flights.
Marty Bradley, an advanced aircraft concept researcher at Boeing's Research and Technology Department, said: "A few years ago, battery-powered aircraft was a joke." Although batteries and electric engines are quiet and efficient, the batteries are too large and too heavy to store energy. There is much less liquid fuel.
Now, two things have changed. First, the energy that the battery can store increases steadily, and this trend will continue. Second, the technology that combines batteries, electric engines, and traditional engines has advanced, and engines have become smaller, lighter, and more efficient.
In 2011, Siemens demonstrated an early hybrid aircraft, but it was too heavy to be used at all. In the new generation of products, the weight of electric engines, power electronics, and transmissions has dropped by 100 kilograms, and the weight of passengers and travelers that can be loaded has become comparable to that of small aircraft.
In hybrid aircraft design, the aircraft uses a relatively small petrol engine, and the efficiency of the engine is optimal when the aircraft is cruising. If the aircraft is to take off or rise, batteries and electric engines provide more power. When the plane is down, the battery can recover power. As the battery improves, it can provide more and more energy.
How fast the electric aircraft is popularized depends to a large extent on how fast the battery develops. The electric aircraft developed by EADS can store 1,000 kwh of electricity per kilogram of battery, which is equivalent to 5 times that of traditional lithium battery. However, the limitations still exist, and it is estimated that by 2050 all-electric aircraft will be limited to 1600 km.
As for large aircraft, electricity was originally used to drive large turbofan engines above a jet engine. When the aircraft is taxiing, large aircraft are powered by electricity, which saves the aircraft's energy consumption on the ground.
Overall, hybrid power technology will only be used on small aircraft in the coming years. In the short term, the benefits of using electricity are quiet.
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