Airbus has completed a three-day ground vibration test of the A350F in Toulouse, France, marking an important step in the freighter’s preparation for its first flight. Conducted in June, the test measured how the aircraft responded to controlled vibration inputs, giving engineers the data needed to refine the finite-element models used for aeroelastic analysis and dynamic-load calculations. Ground vibration testing helps engineers identify an aircraft’s structural characteristics and confirm how closely its measured behavior corresponds with theoretical predictions. Preparation began several days before testing as teams installed sensors, an electrodynamic shaker exciter and a data-acquisition chain before configuring and weighing the aircraft.
“This validation is a ‘key enabler’ for the first flight, providing the necessary evidence to complete the first step of aeroelastics model validation – which is essential for the opening of the aircraft’s flight envelope,” said Nicolas Lastere, Loads and Aeroelastics Expert at Airbus.
Engineers generated vibration inputs in two ways. External shakers were connected to the aircraft at the wingtips, engines and rear fuselage cone, while the A350F’s control surfaces performed sine sweeps across different frequency ranges. Accelerometers captured the resulting dynamic response, enabling the test team to identify the aircraft’s structural characteristics and compare its measured behavior with the analytical models.
A350F engine Ground Vibration Test. External shakers connected to the engines generated controlled vibration inputs, allowing Airbus engineers to measure the aircraft’s structural response during the three-day test program in Toulouse. Image courtesy of Airbus. © Airbus.
Airbus combined the aircraft’s existing flight-test instrumentation with additional autonomous sensors installed specifically for the ground test. This data-fusion approach allowed the team to bring onboard and test-specific measurements together while optimizing the test duration. Acceleration data was monitored in real time, with post-processing performed after each run so preliminary results could be sent to the design office. Engineers could then review the findings and adjust the remaining test matrix when necessary.
“When the test was underway, the aircraft was ‘excited’ by its own control surfaces through sine sweeps performed on different frequency bandwidths. In addition, some shakers were connected to the airframe at the wingtips, on the rear fuselage cone (‘section 19.1’) and on the engines to complement the varieties of excitations,” said Fabien Ayme, Aeroelastic Testing Expert at Airbus.
“The accelerations were all monitored by the testing team in real-time. After each run, post-processing was performed in order to validate the data and provide first results to the design office for analysis – so they could adapt the test matrix,” Ayme added.
Airbus reported that the completed test produced high-quality results with a good overall match between the measurements and theoretical model predictions. Engineers are now completing the remaining data processing and model tuning as the A350F moves toward its flight-test campaign. Ground vibration testing followed approximately two years of preparation involving teams responsible for vibration testing, flight-test instrumentation, flight-control systems, aeroelasticity, tooling development, mass properties, quality and final assembly.
Flight vibration testing, also known as flutter testing, is planned during the first three months of the flight-test campaign. Those tests will take the A350F to its maximum dive speed and Mach limits, identified as VD and MD, and represent another step toward service-entry clearance. Results from the completed ground test will provide the validated analytical foundation needed for that next phase.
“By validating the aircraft’s structural dynamics on the ground, the GVT team has ensured that when the A350F finally takes to the skies, it does so with the confidence of a design – particularly its aeroelastic model – that has been rigorously tested, measured and quantified,” Ayme said.
About Airbus
Airbus designs and manufactures commercial aircraft, helicopters, defense and space systems, and related products and services. Its commercial aircraft portfolio includes passenger and freighter platforms, while its broader operations support civil aviation, defense, security and space customers worldwide. For more information, please click here.
Source/Photo Courtesy and Copyright of Airbus
(Editor’s Note: All trademarks mentioned in this article, including company names, product names, and logos, are the property of their respective owners. Use of these trademarks is for informational purposes only and does not imply any endorsement.)
Molly Bakewell Chamberlin is the Founder, Publisher and Editor-in-Chief of Components Source Network, a 100% woman- and disability-owned B2B publishing and expert marketplace platform serving the global high-tech manufacturing and engineering community. She is the architect, author and developer of the Network’s 11 specialized e-news sites and 11 peer-vetted expert e-marketplaces, including Sensors + Testing Monthly. With more than 25 years of experience in strategic technical marketing, public relations and business development, she is also the Founder and President of Embassy Global, LLC, which has supported more than 200 high-tech industry brands worldwide since 2008. Molly also serves pro bono as Second Vice Chair of the Government Team for the WBENC Forum and is a long-standing advocate for small business, supplier diversity, sustainability and women in STEM. Connect with Molly on LinkedIn.
- Yokogawa Spectrum Analyzer Supports Laser Validation - August 28, 2026
- TI Introduces Multiaxial Current Sensing for EV Inverters - August 27, 2026
- PI XYZ Piezo Stage Delivers Angstrom-Level Resolution - August 27, 2026
