Interchangeable Aircraft Fairing With Common Mounting Pattern

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Solution Overview

Problem

Existing aircraft fairings and radomes lack the ability to be easily reconfigured for different aircraft missions, often requiring modifications to the aircraft structure and resulting in suboptimal aerodynamic performance and unsightly appearances.

Innovation Solution

An interchangeable fairing system with a common mounting pattern and aerodynamic design that allows for rapid reconfiguration of fairings to accommodate different equipment and missions, featuring a removable forward and aft portion, web frame, and drag angle attachments for secure attachment to the aircraft without altering the existing structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional aircraft fairings are used, then structural integrity is maintained, but reconfiguration for different missions requires modifications to the aircraft structure

Engineering Contradiction:

Improvemission reconfiguration capabilityVSAvoidstructural modification complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The fairing is divided into a fixed portion attached to the aircraft structure and a removable portion that can be easily detached and replaced. This segmentation allows different removable fairings to be installed for different missions without modifying the underlying aircraft structure, thus improving adaptability while maintaining structural integrity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The fixed portion of the fairing serves as a universal mounting structure that can accommodate multiple different removable fairings designed for various missions. This multi-functionality enables the same base structure to support diverse configurations, achieving mission versatility without requiring structural modifications for each mission type.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If removable fairing portions are implemented, then interchangeability is enabled, but attachment security must be maintained

Engineering Contradiction:

Improvefairing interchangeabilityVSAvoidattachment security

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The attachment system is segmented into discrete mounting points with corresponding attachment features on both the fixed and removable portions. This segmentation allows for standardized, secure connections that can be reliably attached and detached while maintaining strong attachment security during flight.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Mounting brackets or attachment mechanisms serve as intermediaries between the fixed fairing structure and the removable fairing portions. These intermediary components provide reliable mechanical connections that ensure secure attachment while facilitating easy interchangeability when needed.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Loss of energy

If aerodynamic coupling is optimized, then drag is reduced, but design flexibility for different configurations is limited

Engineering Contradiction:

Improveaerodynamic dragVSAvoidconfiguration flexibility

Core Design Contradiction:

Loss of energyVSAdaptability or versatility

Solution Approach 1:

The aerodynamic fairing is segmented into fixed and removable portions with aerodynamic coupling features at the interface. This segmentation allows each portion to be optimized for aerodynamics while the removable portion can be changed for different missions, maintaining low drag across multiple configurations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the fairing have different design qualities optimized for their specific functions. The fixed portion provides structural support and baseline aerodynamics, while the removable portion can be optimized for specific mission requirements. The interface between portions is designed with local aerodynamic features to minimize drag disruption.

Inventive Principle:

Principle #3Local quality

4Ease of operation

If common mounting patterns are used, then interchangeability is facilitated, but mounting precision must be maintained

Engineering Contradiction:

Improvefairing interchangeabilityVSAvoidmounting alignment precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

A common mounting pattern is designed into the fixed fairing structure that serves as a universal interface for multiple different removable fairings. This standardized mounting system facilitates easy interchangeability while incorporating alignment features that maintain precise mounting alignment across all fairing types.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The mounting pattern includes self-aligning features such as tapered guides, keyed interfaces, or automated positioning mechanisms that ensure precise alignment during installation. This self-service approach to alignment reduces the need for complex external alignment procedures while maintaining high mounting precision.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12515784B1Aerodynamic fairing

Publication Date: 2026.01.06 TEXTRON INNOVATIONS INC

AI summary

An interchangeable fairing system has a removeable fairing with a common mounting pattern for mounting onto an aircraft and aerodynamically coupling a fixed fairing structure with a fuselage structure. Different types of fairings having the common mounting pattern are interchangeable, allowing for swapping of the different fairings mounted to the aircraft.