Lilium Jet：獲得歐盟設計組織批准
・配備電裝汽車馬達（4kg/100kW）
・與霍尼韋爾國際公司共同開發電機
我們為您帶來 Nikkei Crosstech (xTECH) 上發表的文章摘要。
Germany Lilium: eVTOL
Germany’s Lilium eVTOL has made significant progress in the process of obtaining type certification.
European Aviation Safety Agency (EASA):
EASA is the European aviation safety agency that applies for type certification for commercial operations.
～Design Organization Approval～
On November 27, 2023, we received “Design Organization Approval” from the European Aviation Safety Agency (EASA).
What is design agency approval?
1. It is a hallmark of quality assurance for companies that design and develop safe and compliant aircraft.
2. Obtaining design authority approval is a core requirement for any commercial aircraft manufacturer.
Highly rated DENSO motors:
Denso motors are attracting a lot of attention.
Denso supplies the high-output motor that determines the eVTOL’s performance.
Start of production of Lilium Jet:
It was announced that production had begun on December 6, 2023 (Figure 1).
Lilium Jet production is being developed at a facility in Germany.
The first seven aircraft will be used for type certification flight tests at EASA.
Lilium Jet specifications:
The wings and propellers are deflected vertically during takeoff and landing, and horizontally when cruising.
Thrust vectoring eVTOL aircraft:
The structure of the system is more complex compared to a ‘multicopter’.
However, it can fly at high speed and over long distances.
Joby Aviation’s S4:
Joby Aviation’s S4 is the most advanced in the type certification process.
The S4 is currently undergoing type certification with the US Federal Aviation Administration (FAA).
Lilium Jet flight efficiency
According to specifications, Lilium Jet has superior flight efficiency compared to S4.
For this reason, it is attracting a lot of attention from those involved in the aviation industry.
1. The S4 seats five people (one pilot) and has a cruising range of approximately 240km.
2. Lilium Jet seats up to 7 people (1 pilot and 6 passengers)
The cruising range is over 250km (Figure 2)
https://xtech.nikkei.com/atcl/nxt/column/18/02438/121400032/
DENSO motor: ‘4kg/100kW’ causes an uproar in the industry
We will provide you with a summary of articles published in Nikkei/xTECH.
DENSO motor:
This recruitment is a very important step for DENSO.
In May 2022, we jointly developed an electric motor for eVTOL with Honeywell International.
It has been decided that DENSO’s motors will be used in Lilium eVTOL aircraft.
Adopted in Lilium/eVTOL machine:
Germany’s Lilium will adopt it in the eVTOL “Lilium Jet” that it is developing (Figure 1)
US Joby Aviation is the favorite:
Currently, Joby Aviation of the US is funded by Toyota Motor Corporation.
1. The S4 has a wealth of spec values and flight test results.
2. Many people in the industry say it is the most powerful eVTOL for air taxis.
Lilium Jet competes against:
Mr. Atsushi Matsuda is an engineer who developed unmanned helicopters and is currently the president of AM Creation.
The Lilium Jet is a dark horse and one to watch.
Features of Lilium Jet:
The unique propulsion system is the Ducted Electric Vectored Thrust (DEVT).
30 ducted fans:
30 duct fans (a structure in which propellers are placed inside the duct) are placed in the flap.
Thrust deflection electric duct (DEVT):
1. During takeoff, the aircraft lowers its flaps and climbs vertically. After that, raise the flaps and fly horizontally (Figure 2)
2. Normal propellers generate airflow not only in the direction of propulsion but also in the orthogonal direction.
3. Ducted fans increase flight efficiency. Furthermore, the noise level is also low.
Jointly developed by DENSO and Honeywell
The key to this ducted fan is the drive motor jointly developed by Denso and Honeywell.
1. One motor for each duct fan.
2. A total of 30 pieces are installed in one Lilium Jet (Figure 3)
3. Compatible with air cooling, simplifying the cooling mechanism.