Preparation of the Multi-Gas Monitor for US Navy Submarine Sea Trial

Date

2017-07-16

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Publisher

47th International Conference on Environmental Systems

Abstract

During a successful 2 year technology demonstration of the tunable diode laser spectroscopy (TDLS) based Multi-Gas Monitor (MGM) on the International Space Station (ISS), we began discussing with the US Navy the possibility of conducting a sea trial of an MGM on a submarine. The sea trial would also include a gas chromatography/differential mobility spectrometer based Air Quality Monitor (AQM), which is used operationally on ISS for volatile organic compound analysis. AQM results will be the subject of a separate paper. The Navy’s interest in testing NASA equipment is in a planned update to the environmental monitoring equipment used aboard submarines. NASA’s goal is studying submarines as closed environment analogs to spacecraft. MGM’s core technology was developed by Vista Photonics Inc using Small Business Innovation Research (SBIR) grants and expanded for various applications using NASA program funding. The MGM measures oxygen, carbon dioxide, ammonia and water vapor in ambient air, displays concentrations with temperature and pressure, and stores 30 second moving averages. The sea trial involves collocating the instrument with the Central Atmosphere Monitoring System (CAMS) of the submarine, connecting it to rack power prior to departure, and letting it run during the entire sea trial of a few months duration. All data is stored within MGM, with no connection to the vessel data bus. Crew intervention is limited to checking MGM periodically to see that it is working and power cycling if necessary. After the trial is over, the unit with its data will be retrieved. Post sea trial calibration check and data analysis are planned and results will be compared with both CAMS data and results from MGM’s ISS technology demonstration. The paper discusses calibration and preparation of an MGM for the sea trial.

Description

Paul Mudgett, NASA Johnson Space Center (JSC), USA
Joshua Manney, Naval Surface Warfare Center Philadelphia Division (NSWC), USA
Matthew Smith, Naval Surface Warfare Center Philadelphia Division (NSWC), USA
Sara Jane O'Connor, Naval Sea Systems Command (NAVSEA), USA
Jeffrey S. Pilgrim, Vista Photonics, Inc., USA
ICES504: Management of Air Quality in Sealed Environments
The 47th International Conference on Environmental Systems was held in South Carolina, USA on 16 July 2017 through 20 July 2017.

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Keywords

submarine, air quality, laser spectroscopy, multi-gas monitor, NASA, US Navy, Major constituents

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