Fast Cloud Droplet Probe
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Fast Cloud Droplet Probe

SPEC has developed a Fast Cloud Droplet Probe (FCDP) with state-of-the-art electro-optics and electronics that utilizes forward scattering to determine cloud droplet distributions and concentrations in the range of 1.5 to 50 microns.  Though designed for cloud droplet measurements, the probe has also shown reliable measurements in ice clouds.  The new electronics include a temperature controlled fiber-coupled laser, FSSP-300 optics with pinhole limiting depth of field (Lance et al. 2010), a field programmable gate array (FPGA), 40 MHz analog-to-digital-converter (ADC) sampling, custom amplifiers, a very small and low power Linux based 400 MHz processor and a 16-Gigabyte flash drive that stores data at the probe.

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FCDP-Hawkeye Team at work

ATTREX 2013 DFRC Campaign

Port side instruments

ATTREX 2012 - FCDP and NWV bench testing (12.06.12)

ATTREX 2012 - FCDP and NWV bench testing (12.06.12)

FCDP data system fitted to its mounting structure on the Zone 25 pallet.

FCDP Instrument in Zone 25 with fairing installed (ATTREX, DFRC 2011)

Discussing instrument with WB-57 Staff

Instrument overview during MACPEX

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