Acoustic Sensors for DFAN Testing
Acoustic Sensors for Direct Field Acoustic Noise (DFAN) Testing
PCB microphones are purpose-built to meet the rigorous demands of Direct Field Acoustic Noise (DFAN) testing, ensuring precise and reliable measurements in extreme acoustic environments. Trusted by industry leaders worldwide, these compact and durable sensors provide the accuracy needed to verify that spacecraft components can withstand the harsh noise conditions of rocket launches.
The Role of DFAN Testing for Spacecraft Validation
DFAN testing recreates the intense acoustic environment experienced during a rocket launch, ensuring that payloads and spacecraft components can endure the extreme noise and vibration. Compared to traditional Reverberant Field Acoustic Noise (RFAN) testing, DFAN offers significant advantages: portability, reduced costs, and the ability to conduct tests in-house. By eliminating the need for a dedicated reverberant chamber, DFAN testing also minimizes the risks and expenses associated with transporting sensitive spacecraft hardware for testing.
How DFAN Testing Works
In DFAN testing, a network of acoustic drivers surrounds the test article, creating an intense sound field that simulates the noise levels of a rocket launch. Control and monitoring microphones, such as PCB's precision models, capture real-time data from the test environment, enabling the control system to adjust and maintain uniform sound distribution. This ensures the accuracy and reliability of test results, which are critical for validating payload durability.
Why Choose PCB Microphones?
PCB microphones for DFAN applications combine precision and durability to meet the unique challenges of these demanding tests.
- Compact Design Minimizes Interference: With dimensions of 0.28 x 2.07 inches, PCB microphones for DFAN testing integrate seamlessly into tight setups, reducing interference with the acoustic environment to deliver accurate data.
- Handles Extreme Conditions: Built to perform under high sound pressure levels up to 194 dB and in broad frequency ranges up to 70,000 Hz.
- Calibrated for Accuracy and Reliability: Each microphone is factory-calibrated to national standards traceable to NIST, PTB, and DFM, providing verified precision and dependable performance straight out of the box.
Microphones for DFAN Testing