NASA SBIR 2008 Solicitation


PROPOSAL NUMBER: 08-1 A4.01-9846
SUBTOPIC TITLE: Ground Test Techniques and Measurement Technology
PROPOSAL TITLE: Elastic Films for Cyrogenic Skin Friction Measurements

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Innovative Scientific Solutions Inc
2766 Indian Ripple Road
Dayton, OH 45440 - 3638
(937) 429-4980

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Dr. Jim W Crafton
2766 Indian Ripple Rd
Dayton, OH 45440 - 3638
(937) 429-4980

Expected Technology Readiness Level (TRL) upon completion of contract: 6 to 7

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
Here we introduce a new sensor for measurement of skin friction and pressure, Surface Stress Sensitive Film (S3F). This technique can operate over a range of temperatures from cryogenic (160 K, -113„aC) to well above ambient (470 K, 197„aC). The operation of the sensor is based on the deformations of an elastic film that distorts under the action of the applied normal and tangential loads. Skin friction and pressure gradients are determined by monitoring these distortions and applying a finite element model to the film. Quantitative measurements of skin friction and pressure have been demonstrated on aerodynamic models from 10-m/s to Mach 5. Among these tests was an experiment that included S3F on one side of the model and PSP on the other side. Data from each sensor was acquired simultaneously, thus demonstrating the compatibility of the S3F with existing PSP hardware. Tunnels with existing PSP systems could be upgraded to include skin friction capability. The opportunity to develop this sensor system for measurements of skin friction in production facilities, including cryogenic tunnels as well as tunnels with operating temperatures up to 200C, is recognized and this is the focus of this proposal.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Distributed measurements of skin friction and pressure are of significant interest in a variety of fields including aeronautical and bio-medical engineering. ISSI is currently pursuing commercial applications in these fields by demonstrating skin friction and pressure measurements on aerodynamic models, micro-channels, artificial heart models, and contact force measurements such as force distribution under a foot. In the aeronautical community, the skin friction and pressure measurements offered by this technique are essential for the validation of CFD codes and the design of low Reynolds number airfoils for micro air vehicles.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Non NASA commercial applications of this technology are mostly in the bio-medical field where measurements of skin friction are essential to the design of artificial implants to minimize the occurrence of clotting. Also with respect to contact force measurements, ISSI has developed a sensor based on the S3F technology which is being used to study the effect of shear and on diabetic ulceration in feet. In conjunction with these proof of concept tests, ISSI has recently developed a commercial Pressure Sensitive Paint system. The components of the skin friction technology have been developed to be compatible with this commercially deployed system and therefore, extension of these systems to include skin friction measurements is offered as a system upgrade. Over the past 12 months, eight complete systems and several components have been sold with total revenue of over $500,000.

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.

Sensor Webs/Distributed Sensors
Testing Facilities

Form Generated on 11-24-08 11:56