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Axial Cyclone Cloud-water Collector (AC3)

Status

Status: 
Operational
Operated By: 
PI

The AC3 was designed at NASA Langley inspired by a previous Straub and Collett (2004) version. The probe samples in-situ cloud water by separating droplets from the main airflow.  This is accomplished by imparting swirl on an axial flow following an in-line stator, and collecting droplets that have impacted on the probes outer walls. Cloud-water is then transferred into the aircraft cabin using teflon tubing and manually collected into vials. Cloud-water can then be analyzed by a number of laboratory analytical techniques including ion-chromatography, pH electrodes, or total organic content. The probe utilizes a shutter to inhibit sample contamination by aerosols.    

Instrument Type: 
Ion Chromatography
Measurements: 
Aqueous concentrations of bulk cloud-water species (e.g., Sulfate, Nitrate, sodium, Ca+2, TOC, pH)
Aircraft: 
C-130H - WFF, P-3 Orion - WFF, HU-25 Falcon - LaRC
Missions: 
ACTIVATE (HU-25 Falcon - LaRC); CAMP2Ex (P-3 Orion - WFF); NAAMES (C-130H - WFF)
Point(s) of Contact: 
Richard Moore (Co-I), Luke D. Ziemba (PI), Matthew Brown (Co-I), Ewan Crosbie (POC; Co-I), Taylor Shingler (Co-I), Lee Thornhill (Co-I), Liz Wiggins (Co-I), Edward L. Winstead (Mgr), Francesca Gallo (Co-I), Sayantee Roy (Co-I)