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[ 2 ] United to work with Archer Aviation to accelerate production of advanced, short-haul electric aircraft [Internet]. Chicago: United Airlines; 2021 Feb 10 [cited 2022 Feb 17]. Available from: https://www.united.com/en/us/newsroom/announcements/cision-125140. 链接1

[ 3 ] American airlines invests in the future of urban air mobility [Internet]. Fort Worth: American Airlines; 2021 Jun 10 [cited 2022 Feb 17]. Available from: https://news.aa.com/news/news-details/2021/American-Airlines-Invests-in-the-Future-of-Urban-Air-Mobility-FLT-06/default.aspx. 链接1

[ 4 ] Vertical hires renowned test pilot as it enters next phase of development [Internet]. Bristol: Vertical Aerospace; 2021 Oct 4 [cited 2022 Feb 17]. Available from: https://vertical-aerospace.com/vertical-hires-renowned-test-pilot-as-it-enters-next-phase-of-development/. 链接1

[ 5 ] Lilium holds capital markets day, announces plan for $1 billion commercial deal & strategic alliance with leading Brazilian airline Azul and the appointment of new board members following business combination with Qell [Internet]. Munich: Lilium Air Mobility; 2021 Aug 2 [cited 2022 Feb 17]. Available from: https://lilium.com/newsroom-detail/capital-markets-dayplanned-1-billion-commercial-deal-with-brazilian-airline-azul-appointment-of-new-board-members. 链接1

[ 6 ] ANA holdings and Joby partner to bring air taxi service to Japan [Internet]. Santa Cruz: Joby Aviation; 2022 Feb 14 [cited 2022 Feb 17]. Available from: https://www.‍jobyaviation.‍com/news/ana-holdings-and-joby-partner-bring-air-taxi-service-to-japan/. 链接1

[ 7 ] Wisk aero secures $450 million from the Boeing company [Internet]. Mountain View: Wisk Aero; 2022 Jan 24 [cited 2022 Feb 17]. Available from https://wisk.aero/news/press-release/wisk-aero-secures-450-million-from-boeing. 链接1

[ 8 ] EHang 216 [Internet]. Fairfax: Electric VTOL News; [cited 2022 Mar 10]. Available from: https://evtol.news/ehang-216/#:_:text=EHang%20is%20an%20autonomous%20aerial,eight%20arms%20instead%20of%20four.

[ 9 ] Infrastructure barriers to the elevated future of mobility [Internet]. London: Deloitte; 2019 May 30 [cited 2022 Feb 17]. Available from: https://www2.deloitte.‍com/us/en/insights/focus/future-of-mobility/infrastructure-barriers-to-urban-air-mobility-with-VTOL.html. 链接1

[10] eVTOL/Urban air mobility TAM update: a slow take-off, but sky’s the limit [Internet]. New York City: Morgan Stanley; 2021 May 6 [cited 2022 Feb 17]. Available from: https://assets.‍verticalmag.‍com/wp-content/uploads/2021/05/Morgan-Stanley-URBAN_20210506_0000.pdf. 链接1

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[12] eVTOL aircraft directory [Internet]. Fairfax: Electric VTOL News; [cited 2022 Mar 10]. Available from: https://evtol.news/aircraft. 链接1

[13] Archer taps FCA’s scale and expertise to accelerate electric vertical take off and landing aircraft (eVTOL) production [Internet]. Palo Alto: Archer Aviation; 2021 Jan 12 [cited 2022 Feb 17]. Available from: https://www.archer.com/news/archer-taps-fcas-scale-and-expertise-to-accelerate-electric-vertical-take-off-and-landing-aircraft-evtol-production. 链接1

[14] McIntosh A. Technology behind the Lilium Jet [Internet]. Munich: Lilium Air Mobility; 2021 Apr 8 [cited 2022 Feb 17]. Available from: https://lilium.com/newsroom-detail/technology-behind-the-lilium-jet. 链接1

[15] Nevans J. Lilium expands flight test program, unveils new design configurations [Internet]. Kitchener: evtol.com; 2022 Mar 4 [cited 2022 Mar 14]. Available from: https://evtol.com/news/lilium-expands-flight-test-program-unveils-new-design-configurations/. 链接1

[16] Archer’s Maker aircraft [Internet]. Palo Alto: Archer Aviation; [cited 2022 Feb 17]. Available from: https://www.archer.com/maker. 链接1

[17] Joby completes flight of more than 150 miles with electric vertical take-off air taxi [Internet]. Santa Cruz: Joby Aviation; 2021 Jul 27 [cited 2022 Feb 17]. Available from: https://www.‍jobyaviation.‍com/news/joby-completes-flight-of-more-than-150-miles/. 链接1

[18] 14 Code of Federal Regulations Part 91. General operating and flight rules [Internet]. Washington, DC: US Government; [cited 2022 Feb 17]. Available from: https://www.ecfr.gov/current/title-14/chapter-I/subchapter-F/part-91. 链接1

[19] eVTOL certification: where are they now and the challenges that still lie ahead [Internet]. Rockville: Aviation Today; 2021 May 24 [cited 2022 Feb 17]. Available from: https://www.‍aviationtoday.‍com/2021/05/24/evtol-certification-now-challenges-still-lie-ahead/. 链接1

[20] Special condition for small-category VTOL aircraft. Cologne: European Union Aviation Safety Agency; 2019.

[21] 14 Code of Federal Regulations, Part 23. Small airplanes: regulations, policies & guidance [Internet]. Washington, DC: US Government; [cited 2022 Feb 17]. Available from: https://www.‍govinfo.‍gov/content/pkg/CFR-2021-title14-vol1/pdf/CFR-2021-title14-vol1-part23.pdf. 链接1

[22] eVTOL: making the electric dream a safe one [Internet]. Reston: Aerospace America; 2021 Sep [cited 2022 Feb 17]. Available from: https://aerospaceamerica.aiaa.org/features/evtol-making-the-electric-dream-a-safe-one/. 链接1

[23] CAAC formally adopts special conditions for EH216-S AAV type certification [Internet]. Guangzhou: EHang Holdings Limited; 2022 Feb 23 [cited 2022 Mar 10]. Available from: https://www.ehang.com/news/860.html. 链接1

[24] Archer announces launch of urban air mobility network partnerships with LA and Miami by 2024 [Internet]. Palo Alto: Archer Aviation; 2021 Mar 9 [cited 2022 Feb 17]. Available from: https://archeraviation.‍medium.‍com/archer-announces-launch-of-urban-air-mobility-network-partnerships-with-la-and-miami-by-2024-7b34d6fdd66c. 链接1

[25] Building radically better ways of moving—Lilium factsheet [Internet]. Munich: Lilium Air Mobility; 2021 Sep [cited 2022 Feb 17]. Available from https://lilium.‍com/files/redaktion/refresh_feb2021/newsroom/mediakit/Lilium_Factsheet_September_2021.pdf. 链接1

[26] Podcast: UAM skeptics on the hot seat [Internet]. New York City: Aviation Week Network; 2021 Mar 15 [cited 2022 Feb 17]. Available from: https://aviationweek.com/aerospace/podcast-uam-skeptics-hot-seat. 链接1

[27] Fundamentals of noise and sound [Internet]. Washington, DC: Federal Aviation Administration; 2020 Jul 13 [cited 2022 Feb 17]. Available from: https://www.faa.gov/regulations_policies/policy_guidance/noise/basics/. 链接1

[28] How loud is an eVTOL? [Internet]. Palo Alto: Archer Aviation; 2021 Oct 21 [cited 2022 Feb 17]. Available from: https://archer.‍com/news/how-loud-is-an-evtol. 链接1

[29] Electric aircraft set to take flight by 2026 under new agreements with United Airlines Ventures, Breakthrough Energy Ventures, Mesa Airlines, Heart Aerospace [Internet]. Chicago: United Airlines; 2021 July 13 [cited 2022 Feb 17]. Available from: https://www.‍united.‍com/en/us/newsroom/announcements/electric-aircraft-set-to-take-flight-by-2026-under-new-agreements-with-united-airlines-ventures-breakthrough-energy-ventures-mesa-airlines-heart-aerospace-2653765004. 链接1

[30] Eviation’s maiden flight could usher in electric Aviation Era [Internet]. New York City: IEEE Spectrum; 2022 Feb 7 [cited 2022 Feb 17]. Available from: https://spectrum.‍ieee.‍org/eviations-maiden-flight-to-usher-in-era-of-electric-aviation. 链接1

[31] The ‘Spirit of Innovation’ officially breaks speed record and becomes the world’s fastest all-electric vehicle [Internet]. Goodwood: Rolls-Royce; 2022 Jan 20 [cited 2022 Feb 17]. Available from: https://www.rolls-royce.com/media/press-releases.aspx. 链接1