Aerial Propulsion Unit Elastic Mounting for Cooling and Airflow

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Solution Overview

Problem

Existing electrically driven propulsion units for aerial vehicles face challenges in efficiently attaching electric and electronic components, which can impair cooling efficiency and affect propulsion airflow.

Innovation Solution

The use of an elastic attaching device with an elastic element that provides an elastic restoring force to attach electric and electronic components to the propulsion unit, eliminating the need for complex designs like threaded holes and allowing for a thinner attachment structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If screws are used to attach electric and electronic components to the stator part, then the components can be securely fixed, but the attachment structure needs to be rather thick to accommodate the screw in a threaded hole

Engineering Contradiction:

Improveattachment strengthVSAvoidattachment structure thickness

Core Design Contradiction:

StrengthVSLength of stationary object

Solution Approach 1:

The invention extracts the threading function from the attachment structure by using a separate threaded insert (attachment element) that can be screwed into the stator part. This allows the stator part itself to remain thin while still providing secure attachment through the inserted element, which contains the threaded hole.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The attachment element serves as an intermediary component between the stator part and the electric/electronic components. It mediates the connection by providing the threaded interface needed for secure attachment without requiring the stator part to have thick walls with integrated threaded holes.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Strength

If the attachment structure is made thick to accommodate screws, then secure attachment is achieved, but the cooling efficiency of the electric and electronic components is impaired

Engineering Contradiction:

Improveattachment strengthVSAvoidcooling efficiency

Core Design Contradiction:

StrengthVSTemperature

Solution Approach 1:

By extracting the threading function to a separate attachment element, the stator part can be made thin to maintain good thermal contact with cooling surfaces, while the attachment element provides the necessary mechanical strength for secure component fixation.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The attachment function is segmented into a separate element rather than being integrated into the stator part. This allows independent optimization of the stator part for cooling efficiency (thin design) and the attachment element for mechanical strength (with threaded hole).

Inventive Principle:

Principle #1Segmentation

3Strength

If screws are used for attachment, then components can be securely fixed, but the screw may penetrate the attachment structure and affect the propulsion air flow

Engineering Contradiction:

Improveattachment strengthVSAvoidpropulsion air flow interference

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The threaded interface is extracted to a separate attachment element that can be positioned and designed to avoid penetrating into the propulsion air flow path, while still providing secure attachment for the electric and electronic components.

Inventive Principle:

Principle #2Taking out (Extraction)

4Temperature

If a thin attachment structure is used, then cooling efficiency is improved, but secure attachment of components becomes difficult

Engineering Contradiction:

Improvecooling efficiencyVSAvoidattachment strength

Core Design Contradiction:

TemperatureVSStrength

Solution Approach 1:

The attachment element acts as an intermediary that bridges the gap between the thin stator part and the requirement for secure component attachment. It can be screwed into the stator part to provide strong mechanical fixation without requiring the stator part itself to be thick.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution enhances cooling efficiency, reduces mechanical interference with propulsion airflow, and facilitates easy replacement of components, while maintaining a compact and lightweight design.

Implementation Method 1

at least one attaching device (9) comprising an elastic element (10) which attaches the attaching object (8) by means of an elastic restoring force to the attachment structure (7)

Methodology Applied

Scientific EffectElastic restoring force: Elasticity

Data Source

PatentEP4545416A1Electrically driven propulsion unit of an aerial vehicle, and aerial vehicle comprising an electrically driven propulsion unit

Publication Date: 2025.04.30 ARCHER AVIATION INC

Figure 1~2
Figure 3~4
Figure 5~6a

AI summary

An electrically driven propulsion unit (4, 6) of an aerial vehicle (1) comprises: an attachment structure (7); and at least one attaching object (8) to be attached to the attachment structure (7) at a first side (A) thereof, the at least one attaching object (8) being an electric or electronic component. In order to attach the electric and/or electronic component the propulsion unit (4, 6) further comprises at least one attaching device (9) comprising an elastic element (10) which attaches the attaching object (8) by means of an elastic restoring force to the attachment structure (7).