Modular VTOL Aircraft Coupling Layout for Safer Passenger Access

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Solution Overview

Problem

Existing modular aircraft designs pose safety risks due to unwanted contact between passengers or cargo and propulsion units, limited seating comfort, noise nuisance, and restricted access areas, while also compromising aerodynamics and stability.

Innovation Solution

A modular aircraft design with a flight module featuring electric motors and propellers arranged in a hexagonal structure, a transport module with a safety distance from the flight module, and a coupling device allowing for detachable and adjustable connections, along with air guidance devices for improved stability and aerodynamics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the passenger transport unit is connected directly to the central module without any gap, then the structural integrity is improved, but the safety risk of unwanted contact between passengers/cargo and propulsion units increases

Engineering Contradiction:
Improvestructural integrityVSAvoidsafety risk
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The aircraft is divided into separate modular components: a flight module containing propulsion units and a transport module containing the passenger/cargo area. These modules are connected via a coupling device rather than being directly integrated, allowing the structural connection to be maintained while creating physical separation between passengers and dangerous propulsion elements.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A coupling device acts as an intermediary element between the flight module and transport module. This coupling device includes a safety distance that prevents direct contact between the transport module and propulsion units, thereby mediating the connection to eliminate safety risks while preserving structural integrity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If propulsion units are arranged close to the transport unit, then the device complexity is reduced, but the access area for passengers is restricted

Engineering Contradiction:
Improveconfiguration simplicityVSAvoidaccess area
Core Design Contradiction:
Device complexityVSArea of stationary object

Solution Approach 1:

The coupling device extends in the longitudinal dimension, creating a safety distance that separates the transport module from the flight module. This dimensional extension allows the propulsion units to remain positioned for efficient aerodynamics while ensuring sufficient access area for passengers in the transport module.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Length of moving object

If the transport unit is positioned close to the flight module, then the overall aircraft size is reduced, but noise nuisance for passengers increases

Engineering Contradiction:
Improveaircraft sizeVSAvoidnoise nuisance
Core Design Contradiction:
Length of moving objectVSObject-affected harmful factors

Solution Approach 1:

The coupling device serves as a noise-isolating intermediary between the noisy propulsion units in the flight module and the passenger area in the transport module. By positioning the transport module at a safety distance through this coupling device, noise transmission to passengers is reduced while maintaining a compact overall aircraft configuration.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Adaptability or versatility

If the coupling device allows detachable connection, then the adaptability is improved, but the structural stability is reduced

Engineering Contradiction:
Improvemodular adaptabilityVSAvoidstructural stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The coupling device incorporates a swivel joint that allows dynamic adjustment and detachment of the transport module from the flight module. This dynamic connection mechanism enables the structure to adapt to different operational configurations while maintaining stability during connected flight operations through proper mechanical coupling.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The detachable coupling device enables segmentation of the aircraft into independent flight and transport modules that can be connected or separated as needed. This segmentation provides versatility for different missions while the coupling mechanism itself is designed to ensure structural stability when the modules are connected for flight.

Inventive Principle:
Principle #1Segmentation

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

Enhances passenger safety and comfort by preventing contact with propulsion units, reduces noise pollution, and improves aerodynamics and stability, enabling efficient and safe vertical take-off and landing operations.

Implementation Method 1

each drive unit has an electric motor and at least one propeller operatively connected to the electric motor

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

The propeller blades and their roots can be made of a fiber-reinforced composite material, such as carbon fiber-reinforced plastic

Methodology Applied
Scientific EffectAerodynamic lift: Aerofoil

Data Source

PatentEP3724069B1Modular flight apparatus
Publication Date: 2026.04.01 GERMANIUMTECH GMBH
  • EP3724069B1 patent drawingFigure 1
  • EP3724069B1 patent drawingFigure 2
  • EP3724069B1 patent drawingFigure 3

AI summary

The invention relates to a modular vertical take-off and landing aircraft (1) for transporting persons and/or loads, having: — a flight module (2) with multiple drive units (4) arranged on a wing assembly (3), each drive unit (4) having an electric motor (5) and a propeller (6) that is operatively connected to the electric motor (5), — a transport module (7) having a conveying pod (8) and a connection device (9) for connecting the conveying pod (8) to the flight module (2), the connection device (9) having an elongate shaft (10), one end of which is attached to the conveying pod (8), and — a coupling device (11) for connecting the flight module (2) to another end of the elongate shaft (10) of the transport module (7).