NASA SBIR 2018-I Solicitation

Proposal Summary

 18-1- A1.02-1269
 Quiet Performance - Propulsion Noise Reduction Technology
 Effects of BLI and Inflow Distortion on Noise Generation and Performance of Fan-Rotor
SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Technology in Blacksburg, Inc.
265 Industrial Drive
Christiansburg , VA 24073-2538
(540) 961-4401

Principal Investigator (Name, E-mail, Mail Address, City/State/Zip, Phone)
Jonathan Fleming
265 Industrial Dr. Christiansburg, VA 24073 - 2538
(540) 382-8502

Business Official (Name, E-mail, Mail Address, City/State/Zip, Phone)
Ms. Tamara Murray
265 Industrial Dr. Christiansburg, VA 24073 - 2538
(540) 381-8502
Estimated Technology Readiness Level (TRL) :
Begin: 3
End: 5
Technical Abstract

In response to NASA SBIR topic A1.02 Quiet Performance – Propulsion Noise Reduction Technology, the team of Techsburg, AVEC, and Ampaire proposes implementation and design application of a low-order noise modeling tool for installed ducted fan-rotor aerodynamic and acoustic analysis. Named the “Installed Ducted-Fan Noise Model” (IDFNM), and following after Techsburg/AVEC’s work in noise modeling for pusher propellers, this tool will offer early-stage design analysis support for installed ducted fan-rotor propulsion systems by capturing the aerodynamic unsteady loading and noise sources resulting from inflow distortion or non-uniform inflow. This tool is well suited for highly integrated and innovative propulsion airframe integration concepts, such as boundary layer ingesting fan configurations. Application of this tool will focus on a highly-efficient design for Ampaire’s TailWind electric aircraft. In collaboration with Ampaire, Techsburg and AVEC will work to design an optimized first-generation BLI ducted fan for the TailWind passenger aircraft. During Phase I, Techsburg and AVEC will work on design tool maturation, and also conduct a propulsor design trade study, complete with aerodynamic and acoustic predictions, for the TailWind aft-mounted, boundary layer ingesting ducted fan.  Phase II work will include an anechoic wind tunnel test program for validation of prediction tools over a range of operating conditions and the delivery of an integrated low-order noise prediction software package for the "Installed Ducted-Fan Noise Model”.

Potential NASA Applications

The ultimate deliverable of the proposed work is the "Installed Ducted-Fan Noise Model” (IDFNM) which will contribute to NASA's Advanced Air Transport Technology Program and related work as it seeks to improve on conventional aircraft performance and noise emissions.  Furthermore, this proposal features focused design work on the Ampaire Tailwind, an aircraft with a BLI ducted fan propulsor in the 500-kW class that is aligned well with NASA’s development goals and X-57 roadmap.

Potential Non-NASA Applications

Noise from non-uniform flow ingestion into rotating fans is a fundamental engineering problem. The application of inflow distortion noise modeling has many uses apart from ducted fan design and development. These applications include HVAC fan systems, cooling fans, turbomachinery, marine propulsion, impeller/blower cage designs, and commercial products that utilize blowers and fans to move air. These will be investigated as potential markets for the technology and design approach.

Form Generated on 05/25/2018 11:26:55