NASA SBIR 2005 Solicitation


SUBTOPIC TITLE:Habitation Systems
PROPOSAL TITLE:Adaptive Intelligent Ventilation Noise Control

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Physical Optics Corporation
20600 Gramercy Place, Building 100
Torrance, CA 90501-1821
(310) 320-3088

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Keehoon   Kim
20600 Gramercy Place, Building 100
Torrance, CA  90501-1821
(310) 320-3088

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
To address the NASA need for quiet on-orbit crew quarters (CQ), Physical Optics Corporation (POC) proposes to develop a new Adaptive Intelligent Ventilation Noise Control (AIVNC) system to reduce acoustic noise inside the CQ and work spaces. AIVNC is based on a new multimodal, skin-like active noise controller that will be easy to retrofit and will not interfere with air flow or generate secondary noise. AIVNC cancels ventilation noise by producing high fidelity, broadband counter-acoustic energy by means of very thin, flat multifrequency active patches under the control of an intelligent adapting module (IAM) based on a spontaneous adapting acoustic model. In Phase I POC demonstrated AIVNC with in-duct streamlined MAPs based on two piezoelectric materials, reproducing high-quality sound at up to 90 dB from 300 to 10000 Hz with very low distortion; a compact driving MAP amplifier; two IAM algorithms predicting ventilation noise one step ahead to cancel it, reducing noise by up to 27 dB rms with real ISS ventilation noise provided by NASA. In Phase II POC will advance/optimize AIVNC components to build a fully functional AIVNC prototype to reduce CQ noise by >30 dB, satisfying NC 40 requirements for NASA crew quarters.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
As an effective means of controlling structural/acoustic noise, POC's AIVNC adaptive active control technology will have many NASA space applications in addition to habitat noise suppression. The AIVNC system can be incorporated, for example, into acquisition, targeting, and pointing stabilizers to reduce structural and acoustic noise/vibration, including aerodynamic noise such as future civil tiltrotor noise, both rotary and fixed-wing aircraft noise for UAVs, space-based mirrors, high-altitude balloon experiments, and advanced high-energy lasers.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Our AIVNC technology can address a wide range of large, exceptionally rich, and diverse markets in the aerospace industry, including cancellation of cabin and cockpit noise and fuselage vibration. Because of its flexibility and adaptability, an intelligent active control system based on AIVNC technology can be implemented into any noise or vibration controllers. It will suppress aeroacoustic noise in civil aircraft and exterior noise during takeoff and landing, and reduce fan discharge noise propagation.

NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.

Autonomous Reasoning/Artificial Intelligence
Controls-Structures Interaction (CSI)
Multifunctional/Smart Materials
On-Board Computing and Data Management
Pilot Support Systems

Form Printed on 07-25-06 17:04