An Instrument to Measure Aircraft Sulfate Particle Emissions

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$100,000.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
NNX11CD82P
Award Id:
n/a
Agency Tracking Number:
105179
Solicitation Year:
2010
Solicitation Topic Code:
A2.02
Solicitation Number:
n/a
Small Business Information
45 Manning Road, Billerica, MA, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
030817290
Principal Investigator:
Michael Timko
Principal Investigator
(978) 932-0280
timko@aerodyne.com
Business Contact:
Cameron Martin
Marketing Administrator
(978) 932-0207
cmartin@aerodyne.com
Research Institute:
Stub




Abstract
Aircraft particle emissions contribute a modest, but growing, portion of the overall particle emissions budget. Characterizing aircraft particle emissions is required to improve aircraft combustor design and aircraft operating practices. Aircraft particle emissions are a complex mixture of soot and semi-volatile material, primarily inhabiting sizes smaller than 100 nm. New instruments are required to characterize aircraft particle emissions. We propose to build a new instrument for sensitive (>200 ng m-3 on a 1 Hz cycle) measurements of particle sulfate. The key instrument component will be a tunable infrared diode absorption spectrometer (TILDAS). Compared to existing sulfate measurement instruments, the TILDAS-sulfate instrument will be able to reject NO interferences, a key capability required for aircraft exhaust applications. Prior to reaching the TILDAS, gas phase SO2 will be removed using an acid gas denuder and particle sulfate will be converted to SO2 in a quartz oven. By running the TILDAS-sulfate in tandem with a commercial differential mobility analyzer, we anticipate obtaining size resolved sulfate mass loadings (10 size bins, from 10 nm to several hundred nm). Phase I tasks include evaluating acid gas denuder and SO2-to-sulfate technologies, determining the instrument detection limits, demonstrating instrument discrimination against NO and other interferences, and demonstrating the use of the instrument to characterize simulated aircraft exhaust gas.

* information listed above is at the time of submission.

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