Calibration Adaptor Bracket for Consistent Flight Control Force Feedback

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Solution Overview

Problem

Existing methods for measuring force feedback in flight simulator components like sidesticks and stab trims lack reproducibility and consistency across different simulators.

Innovation Solution

A calibration adaptor bracket and method that positions a force gauge relative to a control interface, allowing precise measurement of force feedback in multiple directions, using a housing with aligned attachment points for the force gauge and a plunger, and optionally incorporating an accelerometer for angle measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If existing methods for measuring force feedback are used, then force measurement can be performed, but the measurements are not readily reproducible from time to time and simulator to simulator

Engineering Contradiction:
Improveforce feedback measurement consistencyVSAvoidmeasurement reproducibility
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The measurement system is segmented into distinct functional components: a standardized adaptor bracket that interfaces with the control interface, a force gauge for measurement, and an accelerometer for orientation detection. This segmentation allows each component to be optimized independently and ensures consistent assembly procedures across different simulators, improving measurement reproducibility.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system measures multiple parameters simultaneously (force magnitude, force direction, and control interface orientation) to fully characterize the force feedback. By changing from single-parameter to multi-parameter measurement, the system captures the complete force feedback state, enabling consistent reproduction across different simulators through comprehensive data collection.

Inventive Principle:
Principle #35Parameter changes

2Ease of manufacture

If force feedback measurement is implemented, then calibration can be performed, but the process lacks standardization across different flight simulators

Engineering Contradiction:
Improvecalibration standardizationVSAvoidcross-simulator compatibility
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The adaptor bracket is designed with universal features that allow it to interface with multiple types of control interfaces (yokes, sidesticks, rudder pedals) across different flight simulator models. The standardized connection points and mounting mechanisms enable the same measurement procedure to be applied universally, achieving both standardization and cross-simulator compatibility.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The adaptor bracket serves as an intermediary device between the diverse control interfaces and the measurement instruments. It provides standardized attachment points for the force gauge and accelerometer, mediating the connection in a way that enables consistent measurement procedures across different simulator types without requiring modifications to the original control interfaces.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Measurement precision

If multiple measurement directions are implemented, then comprehensive force feedback characterization is achieved, but the device complexity increases

Engineering Contradiction:
Improveforce feedback characterization completenessVSAvoidmeasurement system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The force gauge and accelerometer are merged into a single integrated measurement assembly mounted on the adaptor bracket. This combination allows simultaneous measurement of force vectors and orientation in multiple directions without requiring separate complex systems, achieving comprehensive force feedback characterization while managing device complexity through integration.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4068248B1Calibration adaptor bracket, apparatus and method
Publication Date: 2026.01.21 CAE INC
  • EP4068248B1 patent drawingFigure 1A
  • EP4068248B1 patent drawingFigure 1B~1G
  • EP4068248B1 patent drawingFigure 2

AI summary

Adaptors for positioning a force gauge relative to a control interface in a flight simulator or aircraft are disclosed where the control interface is moveable in at least one of a back-and-forth direction and a side-to-side direction. In some embodiments the adaptor comprises a housing positionable adjacent the control interface where the housing comprises a first surface configured to snugly receive a predetermined surface of the control interface and a second surface comprising a first housing connector configured for connection to the gauge connector such that pressure is exertable on the control interface by the force gauge in a first direction of measurement aligned with one of the back-and-forth direction and the side-to-side direction.