HCl Monitor. Phase 2
Abstract
At present, the short- and long-term environmental impacts of massive HC1 releases from the Space Shuttle and other solid-rocket launches are not well characterized. It is important to measure the atmospheric HC1 content in both the vapor and aerosol forms. Spectral Sciences, Inc., (SSI) has developed a combination vapor-aerosol HC1 monitor under a Phase II SBIR (Small Business Innovative Research program) contract from the Air Force Engineering Services Center (AFESC), Tyndall AFB, Florida. The instrument consists of four major components: (1) an air sampling, optical measurement unit; (2) a power supply and analog signal output unit; (3) an analog-to-digital (a/d) converter and timing pulse unit; and (4) a personal computer (PC). An air sample is drawn through an aerosol evaporator which vaporizes the aerosols and releases the dissolved HC1 into the gas phase. By turning the aerosol heater on and off, one can determine both the total HC1 (aerosol and vapor) and the vapor phase HC1. The device is based on measuring the infrared absorption of gas phase HC1 in the 3.4 micrometer wavelength region. Keywords: Combustion products; Manned spacecraft; Launches; Solid propellant booster rockets.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1989
- Accession Number
- ADA213572
Entities
People
- F. Bien
- L. S. Bernstein
- R. P. Domingue
- S. C. Richtsmeier
- W. K. Cheng