Whisper Aero Collaborates with NASA to Introduce its Advanced Quiet Technology to Space Exploration

Contrary to what one might assume, space is not a realm of silence. The operational noises of crewed spacecraft — encompassing everything from life support mechanisms and electronic devices to communication systems and the activities of astronauts — contribute to a surprisingly loud environment. NASA has acknowledged the potential impact of these noise levels on astronauts and has implemented numerous enhancements to reduce auditory disturbances within the International Space Station (ISS).

However, the journey to achieving a quieter space habitat is ongoing. A recent partnership sees Whisper Aero, an innovative Tennessee company renowned for creating exceptionally quiet electric propulsion systems for various applications including aircraft, drones, and even gardening equipment, securing a NASA contract. The venture’s goal is to engineer an exceptionally quiet fan suitable for space habitats, with the ambition to present prototype components to NASA at the conclusion of a six-month project. Success in this initial phase could propel Whisper into further developmental phases next year.

The second phase would involve a detailed comparison between Whisper’s fan design and a standard NASA Spacecraft Cabin Ventilation Fan, focusing on both acoustic performance and aerodynamic efficiency under the Small Business Innovation Research (SBIR) contract’s phase one findings.

Whisper’s COO, Ian Villa, highlighted in a recent discourse that the challenge of noise and efficiency in space mirrors those on Earth unless novel technology is applied to address these issues distinctly in crewed space sectors.

A study reveals noise levels in the ISS’s inhabited areas average around 73 decibels (dB). NASA’s space fan operates at 66 dB at a two-foot distance, while Whisper aims to surpass this with a quieter, 61 dB level at the same distance and enhance energy efficiency by 75%. Whisper’s goal points towards a design that’s not only more compact and lighter but also eliminates the need for bulky silencers. By comparison, a typical noisy household appliance ranges between 70 and 80 dB, with normal conversational tones falling between 30 and 60 dB.

Leveraging its terrestrial technology expertise, Whisper is adapting its advanced fan designs, which shift blade passage frequencies into ultrasonic ranges, thereby reducing noise, for space applications. These adjustments account for the unique challenges presented by space, where systems must perform flawlessly for extended periods under different operational stresses compared to their Earth-based counterparts.

The pressing issue of acoustic management is equally critical for emerging private space station projects eyeing to replace the ISS towards the decade’s end. Villa remained silent on discussions with these entities but acknowledged the universal challenge this represents.

Villa expressed optimism about Whisper’s mission to revolutionize air movement technology, emphasizing the importance of delivering systems that are cleaner, quieter, and more efficient, regardless of the environment — space or Earth.

As the space industry evolves, the nuances of sound management — both in terms of decibel levels and sound quality — may prove crucial, especially as the sector moves towards accommodating luxury space tourists alongside professional astronauts. The competitive advantage could hinge on creating the most agreeable environmental conditions.

There’s also interest from NASA in integrating Whisper’s quiet fan technology into space suits, though specific application strategies remain under consideration.

Noise issues, Villa notes, often go unnoticed until resolving them becomes a significant challenge, a scenario all too common in aviation and now emerging within spacecraft design. NASA’s proactive stance on addressing noise pollution marks a refreshing and forward-thinking approach to enhancing astronaut well-being.