Low-Noise High-Efficiency Spacecraft Ventilation Fan

This proposal targets the quieting of the NASA Quiet Spacecraft Fan (QSF) by 5 dB while achieving same or better fan aerodynamic performance at the same design point. The team of AVEC and Techsburg proposes to address the solicitation requirements by applying a suite of modern technologies drawn from our experience in designing quiet, high-efficiency fans and propellers for many applications both military and commercial. To this end, a hierarchy of aerodynamic and acoustic computational tools will be used for guiding the fan design from conceptual design trade studies through high fidelity analysis for risk assessments prior to fabrication and testing. This effort differs from previous design approach in that both aerodynamic and acoustic tools will be used concurrently in the quieting of the QSF unit.