Tyto Calibration Methodology V2.1

At Tyto Robotics, accuracy and precision are top priorities. To further strengthen confidence in our measurements, we recently updated our calibration methodology with an even more rigorous approach to thrust and torque matrix generation, validation, and traceability.

As part of our commitment to transparency, we are publishing the updated methodology (V2.1) used to generate calibrate Flight Stand thrust stands. In addition, beginning in the coming weeks, all Flight Stands will be shipped with a calibration report that documents the calibration process and results.

Technical definitions

Accuracy: The maximum allowed average error observed during calibration. The calibration is performed using dead weights and precision load cells over a range representative of the tool’s intended measurement range. The calibration is done with a single force, after the matrix generation process.

Resolution: Three times the standard deviation of the noise floor measured during a 1-second static recording at the full sample rate. Improved effective resolution may be achieved when exporting filtered data.

Overview

Our matrix generation process is inspired by elements of ASTM E74 and ASTM E2624 and adapted for the multi-axis thrust and torque measurements used in UAV propulsion testing.

The process uses Tyto-developed metrology equipment to apply controlled forces and torques representative of typical UAV test conditions. This includes extensive crosstalk loading scenarios with over 20 points for the Standard version and over 200 points for the Pro version.

More specifically, during the matrix generation process, various combinations of Fx, Fy, Fz, Mx, My, Mz are applied at the same time to characterize the behavior of the unit during a real test. To achieve this, custom machines are used to apply precise forces automatically. The loading sequences are used to generate a matrix for the measurement system, which increases the accuracy of the tool as the matrix is generated using forces representative of real-world loading conditions.

Calibration is then performed using Tyto’s internal methodology, which relies on dead weights and precision load cells across representative portions of the tool’s measurement range. This process is built around controlled loading, repeatability, and traceability, while accounting for the multi-axis nature of the system. All force, voltage, and current sensors use traceable equipment that is itself recalibrated by external accredited labs at regular intervals.

This verification data is available as a PDF upon request. Contact our sales team for more information.

Summary

As the Flight Stand technology evolves, Tyto Robotics will continually update its methodologies to ensure the highest level of accuracy and transparency for its partners. We remain dedicated to supporting the UAV industry with highly accurate, reliable test equipment.