NASA SBIR 2004 Solicitation

FORM B - PROPOSAL SUMMARY


PROPOSAL NUMBER: 04 A1.02-8077
SUBTOPIC TITLE: Aviation Safety and Security: Fire, Icing and Propulsion-Safe and Secure CNS Aircraft Systems
PROPOSAL TITLE: Advanced radiometer for cloud liquid water and aircraft icing detection

SMALL BUSINESS CONCERN (Name, E-mail, Mail Address, City/State/Zip, Phone)
Radiometrics Corp
2840 Wilderness Place, Unit G
Boulder, CO 80301-5414
(303)449-9192

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Fredrick Solheim
solheim@radiometrics.com
2840 Wilderness Place, Unit G
Boulder, CO 80301-5414
(303)449-9192

TECHNICAL ABSTRACT (LIMIT 200 WORDS)
Aircraft icing continues to be one of the major safety and operational concerns of the FAA, elements of the military, and the foreign military and civilian counterparts. Attempts to develop methods to directly detect aircraft icing meteorological conditions have met with mixed success. Combining microwave radiometers with radars has shown great promise, but deficiencies of the radiometers have limited their value. In this proposed effort we will develop a fast sampling multifrequency profiling and dual polarization narrow beam radiometer system to overcome these deficiencies. In this proposed radiometer system, all beams are collinear and match the antenna gain pattern of weather research radars. The radiometer will have the capability of profiling (ranging) water vapor along the beam as well as discriminate ice and water phase hydrometeors. We will also develop a fast beam steering system to operate in concert with the radar. Phase II will produce a turnkey radiometric system, ready to deploy.

POTENTIAL NASA COMMERCIAL APPLICATIONS (LIMIT 100 WORDS)
NASA Glenn is actively researching methods of detecting aircraft icing conditions, and has performed and participated in a number of aircraft icing studies with their Twin Otter, radiometers, radar, and other sensing systems. The technology proposed herein greatly enhances the value of the important radiometric observations by enabling measurements that match the research radars at a number of radiometric frequencies.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (LIMIT 100 WORDS)
The radiometric system developed herein, as well as being a valuable research tool, is to be operated with NEXRAD and Terminal Doppler Weather Radars (TDWRs) to detect and quantify cloud liquid water and ice in single- and mixed-phase conditions. In addition to detecting aircraft icing conditions, this quantification will enhance weather nowcasting and predictive capabilities.