Whisper Aero and NASA Collaborate on Ultra-Quiet Space Tech
Contrary to popular belief, space isn’t silent. Crewed spacecraft and stations generate significant noise from life support systems, electronics, and crew activity. NASA has long prioritized reducing acoustic disturbances for astronaut well-being, implementing numerous upgrades to the International Space Station (ISS) over the years. Now, the agency is taking noise reduction to the next level with Tennessee-based startup Whisper Aero.
A New Frontier for Whisper’s Quiet Tech
Known for its ultra-quiet electric propulsion systems for drones, aircraft, and even leaf blowers, Whisper Aero has secured a NASA contract to design the quietest possible fan for crewed space environments. The six-month Phase 1 SBIR (Small Business Innovation Research) project aims to deliver prototype parts, with potential follow-up testing in Phase 2.
Key Objectives:
- Noise Reduction: Target 61 decibels (dB) at two feet, surpassing NASA’s current 66 dB baseline.
- Efficiency Gains: Achieve 75% greater efficiency than existing systems, reducing weight and eliminating bulky silencers.
- Durability: Ensure continuous operation for years, a stark contrast to terrestrial applications like leaf blowers.
Why Space Acoustics Matter
Noise levels in the ISS’s crewed sections average 73 dB, comparable to a noisy vacuum cleaner. Prolonged exposure can impact astronaut health and performance. Whisper’s solution leverages its proprietary shrouded fan technology, which shifts blade passage frequencies into the ultrasonic range to minimize audible tones.
Challenges of Space Adaptation:
- Extended Operational Lifespans: Space fans must run continuously for years without maintenance.
- Environmental Constraints: Zero gravity and limited space demand compact, lightweight designs.
The Bigger Picture: Private Space Stations and Tourism
With the ISS slated for decommissioning by 2030, private space stations are emerging as successors. These ventures—potentially catering to luxury space tourists—will prioritize acoustic comfort as a competitive edge. While Whisper hasn’t confirmed partnerships, COO Ian Villa notes, “It’s definitely a challenge for them.”
Beyond the ISS: Spacesuits and Future Applications
NASA is also exploring quieter fans for spacesuits, though integration details remain under wraps. Villa emphasizes the importance of proactive noise mitigation: “It’s a challenge often forgotten until it’s too late. We’ve seen this in aircraft, but NASA is addressing it head-on.”
Whisper’s Mission: Cleaner, Quieter Air Delivery
Whether in space or on Earth, Whisper’s goal remains unchanged: “Deliver cleaner, quieter, more efficient air delivery.” As space travel evolves, so too will the demand for technologies that make it not just possible, but pleasant.
For context:
- 70–80 dB: Noisy washing machine or vacuum cleaner
- 30–60 dB: Normal conversation
- 61 dB: Whisper’s target for space fans (quieter than a typical office)
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