Aircraft Based Imaging Probe for the Study of Icing Environments

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$69,989.00
Award Year:
2004
Program:
SBIR
Phase:
Phase I
Contract:
NNC04CA27C
Award Id:
67275
Agency Tracking Number:
034686
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
150 Iowa Street, Suite 202, Sunnyvale, CA, 94086
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
044412802
Principal Investigator:
WilliamBachalo
Principal Investigator
(650) 941-4233
wbachalo@aol.com
Business Contact:
SubraSankar
Business Official
(408) 737-2364
subra_sankar@sbcglobal.net
Research Institute:
n/a
Abstract
Icing environments are of great concern in commercial and military aviation. An aircraft-based, imaging probe is being proposed for the reliable and accurate measurement of liquid water content (LWC) and droplet size distributions in environments variously referred to as freezing rain, freezing drizzle, supercooled drizzle drops, and supercooled large drops (SLD). The innovative aspect of the proposed probe is the use of multiple laser beams (of differing wavelengths) to create high quality shadows of individual particles (droplets and ice crystals) on a 2-d CCD array. Conventional aircraft-based probes such as the OAP suffer from measurement uncertainties arising from the detection of droplets that are out-of-focus. The use of multiple intersecting laser beams will also minimize the background noise created by other particles that may be present along the laser beam path but outside of the measurement volume. Finally, the incorporation of a means for differentiating between ice-crystals and droplets, while counting and measuring both, allows computation of water content in both liquid and solid phases. These innovations, and the other features of the probe to be discussed later, directly address the need for aircraft-based icing monitoring systems that NASA has identified in topic A1.02 of the 2003 SBIR solicitation.

* information listed above is at the time of submission.

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