Aerospace & Defense Technology - April 2022 - 12

Electrified
Propulsion for Aerospace
Where to Start?
T
he advent of electrified propulsion
in the aerospace sector,
captured in microcosm by
the fast-emerging eVTOL market,
both threatens to upset the establishment
of major aerospace players
and offers significant new opportunities
for start-up companies. In all cases,
it is forcing a marriage of system simulation
and architecture definition
techniques from markets already meeting
these challenges, such as automotive.
The demands of these aerospace
applications are causing engineers on
both sides to find the best blend of
tools and approaches to meet their
goals.
In the eVTOL marketplace there is no
common ground yet regarding the
number of propulsion modules, their
disposition or the underlying electrification
technology to convert stored
energy into thrust. As a result, there are
several approaches, each with its own
set of perceived benefits in addressing
key attributes like mass, range, safety,
and efficiency. Taking this to a deeper
level invites a myriad of questions and
challenges. Among the most hotly
debated are those related to the overall
architecture options available, including
rim driven fan (RDF) or hub driven
fan (HDF), whether a gearbox has a
rightful place in the overall optimized
system and how certification hurdles
can be overcome by intelligently integrating
systems.
To address the architecture question,
Drive System Design (DSD) has applied
its architecture definition tool, ePOP,
with the intent of providing a way forward,
or at least quantifying the tradeoffs
affecting the eVTOL industry. The
high-level architectural questions that
eVTOL engineers are asking themselves
are the proper starting point in taking a
full-system approach to electrified propulsion
in aerospace. Additionally, it
enables designers to leverage the learnings
and technology from other market
segments already deploying systems of
this nature.
Taking a given range, vehicle, payload
and flight profile for an eVTOL
12
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Aerospace & Defense Technology, April 2022
ADT Feature 3 Aircraft Electrification 0422_2.indd 12
Intro
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Aerospace & Defense Technology - April 2022

Table of Contents for the Digital Edition of Aerospace & Defense Technology - April 2022

Aerospace & Defense Technology - April 2022 - Intro
Aerospace & Defense Technology - April 2022 - Sponsor
Aerospace & Defense Technology - April 2022 - Cov1
Aerospace & Defense Technology - April 2022 - Cov2
Aerospace & Defense Technology - April 2022 - 1
Aerospace & Defense Technology - April 2022 - 2
Aerospace & Defense Technology - April 2022 - 3
Aerospace & Defense Technology - April 2022 - 4
Aerospace & Defense Technology - April 2022 - 5
Aerospace & Defense Technology - April 2022 - 6
Aerospace & Defense Technology - April 2022 - 7
Aerospace & Defense Technology - April 2022 - 8
Aerospace & Defense Technology - April 2022 - 9
Aerospace & Defense Technology - April 2022 - 10
Aerospace & Defense Technology - April 2022 - 11
Aerospace & Defense Technology - April 2022 - 12
Aerospace & Defense Technology - April 2022 - 13
Aerospace & Defense Technology - April 2022 - 14
Aerospace & Defense Technology - April 2022 - 15
Aerospace & Defense Technology - April 2022 - 16
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Aerospace & Defense Technology - April 2022 - 56
Aerospace & Defense Technology - April 2022 - Cov3
Aerospace & Defense Technology - April 2022 - Cov4
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