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SOARING TWENTIES

机译:二十多岁

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Steve Wright, associate professor of aerospace engineering at the University of the West of England Everybody is talking about electric Vertical Take-Off and Landing vehicles (eVTOLs), also known as flying taxis. There is going to be disappointment - the technology is not moving as quickly as some companies might hope - but they will start to appear over our heads in the 2020s. There are all sorts of compromises that need to be made to get the efficiency as high as possible, but frankly companies aren't going to solve the energy-density issue. We are spoiled rotten by hydrocarbon fuel, which has about 40MJ per kilogram, but the best batteries at the moment have 1MJ. Even if we double or triple energy density in batteries over the next 10 years, we're still a long way away from aviation fuel. If we get to one-hour flights by 2030, I'd be really surprised.
机译:西英格兰大学航空工程副教授史蒂夫·赖特(Steve Wright)每个人都在谈论电动垂直起降飞机(eVTOL),也称为飞行出租车。令人失望的是-技术的发展没有某些公司希望的那样快-但它们将在2020年代开始出现在我们的头上。为了获得尽可能高的效率,需要做出各种妥协,但是坦率地说,公司不会解决能源密度问题。每公斤约40MJ的碳氢化合物燃料会糟透了我们,但目前最好的电池只有1MJ。即使在未来10年内,我们将电池的能量密度提高一倍或两倍,但距离航空燃料还有很长的路要走。如果到2030年我们能达到一小时的飞行,我真的会感到惊讶。

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  • 来源
    《Professional engineering》 |2020年第1期|18-23|共6页
  • 作者

    JOSEPH FLAIG;

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  • 入库时间 2022-08-18 05:24:03

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