NASA SBIR 2019-II Solicitation

Proposal Summary

 19-2- Z8.03-3077
 Low Cost Radiation Hardened Integrated Circuit Technology
 Lightweight Radiation Shielding Composites for Small Spacecraft
SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Nanosonic, Inc.
158 Wheatland Drive
Pembroke, VA 24136
(540) 626-6266

PRINCIPAL INVESTIGATOR (Name, E-mail, Mail Address, City/State/Zip, Phone)
Keith Hill
158 Wheatland Drive
Pembroke, VA 24136 - 3645
(540) 626-6266

BUSINESS OFFICIAL (Name, E-mail, Mail Address, City/State/Zip, Phone)
Melissa Campbell
158 Wheatland Drive
Pembroke, VA 24136 - 3645
(540) 626-6266

Estimated Technology Readiness Level (TRL) :
Begin: 5
End: 7
Technical Abstract (Limit 2000 characters, approximately 200 words)

Radiation in space poses threats for both astronauts and electronic equipment.  While it is relatively easy to shield against non-ionizing RF and microwave radiation, shielding against higher energy ionizing radiation – gamma rays, protons, neutrons and galactic cosmic radiation (GCR) – is much more challenging.  With longer missions to Jupiter or future manned missions (higher cumulative radiation exposure for astronauts) and with the use of smaller spacecraft that cannot accommodate additional weight needed for shielding, the importance of lightweight radiation shielding to NASA has increased.  To be effective, conventional shielding materials typically need to be thick and material thickness increases the total unwanted mass to be carried by a small satellite, and the amount of power required to create a deflection field would require significant fuel, so again unwanted additional weight.

NanoSonic proposes to continue to refine our lightweight composites consisting of multiple layers of graded atomic number (Z-number) materials as effective ionizing radiation shields beyond Low Earth Orbit (LEO).  Radiation attenuation as a function of areal density was researched during Phase I and NanoSonic’s material was 71% higher attenuation vs. polyethylene.  The shielding composites possess a tough woven Kevlar and Boron Nitride (BN) wound composite which could be used as the structural shells and support members of small satellites so serve multiple purposes (shielding, micrometeoroid impact protection, and structural support).  Preliminary research results with NanoSonic’s materials in the Department of Environmental and Radiological Health Sciences at Colorado State University (CSU), and at the NASA Space Radiation Laboratory (NSRL/BNL), have shown that our materials significantly attenuate X-rays and gamma rays without secondary radiation, and structurally survive simulated 50-year exposure to solar energetic particles (SEP) and GCR. 

Potential NASA Applications (Limit 1500 characters, approximately 150 words)

This Phase II program would develop a lightweight radiation shielding composite. We foresee integration with future spacecraft as a path to market materials on a much larger scale. These radiation shielding composites offer enhanced safety and reliability for space structures as they include components for moderate protection against galactic cosmic radiation, solar energetic particles, and secondary neutrons. This radiation shielding methodology could represent a large market to improve virtually any existing NASA spacecraft shielding needs.

Potential Non-NASA Applications (Limit 1500 characters, approximately 150 words)

Similar, multifunctional nanocomposite shielding materials are being developed for other applications by NanoSonic building on our Metal Rubber family of materials, in the 1) electronics, 2) aerospace and defense, and 3) biomedical engineering areas.  We foresee integration with current commercial partners such as Lockheed Martin and others as a path to market our materials on a much larger scale.

Duration: 24

Form Generated on 05/04/2020 06:26:12