Laser Alignment System for Aircraft Engine Installation

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Solution Overview

Problem

The existing methods for installing aircraft engines into military aircraft, such as the F-35, are time-consuming and prone to errors due to the complexity of aligning the engine trailer with the aircraft engine bay, which can result in damage to the trailer, engine, or aircraft.

Innovation Solution

A laser system is used to align the installation trailer with the aircraft engine bay by positioning a laser transmitter assembly on the trailer rails and a laser receiver target assembly on the engine bay rails, ensuring precise alignment and reducing the risk of misalignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a lead technician physically moves the trailer while requesting adjustments, then the trailer alignment can be controlled, but the technician lacks field of view and direct control over adjustment magnitude

Engineering Contradiction:
Improvetrailer alignment controlVSAvoidfield of view
Core Design Contradiction:
Ease of operationVSLoss of information

Solution Approach 1:

The patent replaces the manual mechanical alignment process with an automated optical measurement system. Laser transmitters mounted on the trailer and target assemblies on the aircraft automatically measure alignment parameters, eliminating the need for the technician to physically move and visually assess the trailer position.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces laser transmitters and target assemblies as intermediary devices between the trailer and the technician. These devices transmit alignment information optically, providing the technician with precise measurement data without requiring direct visual observation of the trailer's position relative to the aircraft.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If technicians communicate adjustments manually, then alignment can be achieved, but overcompensation or insufficient adjustments occur

Engineering Contradiction:
Improvealignment speedVSAvoidalignment accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The patent implements a feedback system where laser transmitters continuously measure the trailer's position relative to the aircraft, and this measurement data is provided to the technician in real-time. This quantitative feedback enables precise control of adjustments, preventing overcompensation or insufficient adjustments that occur with manual communication alone.

Inventive Principle:
Principle #23Feedback

3Reliability

If traditional manual alignment methods are used, then the process can be completed, but it takes up to eight hours and risks damage to expensive components

Engineering Contradiction:
Improvedamage preventionVSAvoidalignment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces the slow, manual mechanical alignment process with an automated optical measurement and control system. The laser-based measurement system provides real-time alignment data, enabling technicians to make precise adjustments quickly and safely, reducing alignment time from up to eight hours to a fraction of that time while preventing damage to the engine and aircraft.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

The laser alignment system significantly reduces the time required for engine installation, minimizes the risk of damage to the engine, trailer, and aircraft, and enhances the accuracy of the alignment process.

Implementation Method 1

A laser system is used to align the installation trailer with the aircraft engine bay by positioning a laser transmitter assembly on the trailer rails and a laser receiver target assembly on the engine bay rails

Methodology Applied
Scientific EffectLaser: Laser

Data Source

PatentUS12208924B1Aircraft engine installation alignment system
Publication Date: 2025.01.28 THE GOVERNMENT OF THE UNITED STATES AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE
  • US12208924B1 patent drawing
  • US12208924B1 patent drawing
  • US12208924B1 patent drawing

AI summary

A laser guided alignment system for facilitating installation of an aircraft engine into an engine bay of an aircraft is disclosed herein. A laser assembly may be attached to one or more rails of an engine trailer or rails of an engine bay. A laser receiving assembly may be attached to one or more of the rails of the engine bay or the rails of the trailer. The engine can be moved from the trailer to the engine bay when the laser guide assembly is aligned on target.