Why Testing & Measurement Matter in eVTOL Development

eVTOL development demands high-precision acoustic measurements—both for aerodynamic noise characterization and in-cabin sound validation. GRAS microphones are built to perform in challenging aerospace environments, offering the accuracy and robustness needed for reliable data in every phase of testing.

Urban air mobility demands precise testing and measurement solutions to ensure:

  • Regulatory Compliance – Meet evolving urban noise and vibration regulations.
  • Enhanced Passenger Experience – Minimize cabin noise and structural vibrations for a smoother, more comfortable journey.
  • Minimized Environmental Impact – Reduce both acoustic emissions and mechanical disturbances for sustainable citywide adoption.
  • Optimized Performance & Efficiency – Improve aerodynamics, propulsion, and structural integrity through advanced testing insights.
  • Looking for Solutions in Aerospace? – Explore our aerospace applications

Contact me

eVTOL Flyer

Precision-engineered Microphones for Next Gen Urban Air Mobility

Get instant access to our flyer packed with practical insights for tackling today’s most critical eVTOL acoustic challenges. Whether you're validating rotor blade and boundary-layer noise, optimizing in-cabin comfort, or preparing for community noise certification, this guide shows how GRAS microphones enable accurate, high-resolution acoustic measurements—across wind tunnels, flight campaigns, and real-world test environments.
Download Free

On-demand Webinar

UAS Noise Measurement

As eVTOL (Electric Vertical Take-Off and Landing) technology evolves, achieving the right balance between performance, safety, and noise control is essential. These aircraft, designed for urban air mobility, rely on electric propulsion for vertical take-off and landing, making noise management a critical factor in their success.

Watch this on-demand masterclass to learn key considerations for precise UAS noise assessments.

Watch now

Whitepaper: Turbulence and Measuring in Boundary Layers 

Wind Noise Testing: Precision Tools for Boundary Layer Acoustic Testing

Wind-induced noise presents a critical challenge in eVTOL and advanced aerospace applications—especially as distributed electric propulsion reduces traditional masking effects. Capturing accurate acoustic data early in the development cycle is essential for aerodynamic refinement, certification readiness, and public noise acceptance.

GRAS offers precision solutions designed for demanding aeroacoustic environments, including Ultra-Thin Precision (UTP) microphones for boundary layer analysis and low-profile surface-mounted sensors ideal for high-pressure, in-situ testing on airframes and wind tunnel models.

Equipped with integrated TEDS and preamplifiers, these microphones deliver consistent, traceable results—supporting everything from CFD model validation to iterative flight testing. When timing is tight and test conditions are complex, GRAS helps you measure what matters.

Download Whitepaper

Findings from NASA and Joby

NASA Publishes Acoustic Dataset from STRIVES-5 eVTOL Tests

See how NASA’s STRIVES-5 campaign is redefining eVTOL noise testing—powered by 58 GRAS flush-mounted microphones arranged in a precision ground array. This case reveals how high-resolution acoustic data was captured during real flight operations to support advanced modeling, certification frameworks, and public noise acceptance. If you're involved in aeroacoustic validation, array design, or regulatory compliance, this is a rare look into how cutting-edge measurement solutions are enabling the next generation of urban air mobility.

Download Case

Contact Us

Fill out the form below and one of our specialists will get back to you.

Thank you for your interest in GRAS measurement microphones and solutions. We’re looking forward to answering your questions and discussing your project needs.

Please enter your contact details here, and we will get in touch with you within five work days.