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Smokestack monitor
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1980 |
| Description | Environmental Protection Agency monitors emissions from industrial smokestacks to obtain such information as how much pollutant material is being discharged into the atmosphere, how rapidly it is being discharged, and how the smoke plume disperses after leaving the stack. Raytheon's invisible laser beam, adapted from NASA's laser doppler technology, measures emission from one of the stacks. Aimed from a van's interior, the beam is projected from the roof mounted scanning pod near the rear of the vehicle. Particles in the smoke coming out of the stack reflect the beam back to light-detecting equipment in the van. The frequency of the returned beam is different from that of outgoing beam; analysis of the difference in frequencies, called "doppler shift" allows determination of the velocity. |
| File Size | 923360 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20030004765 |
| Archival Resource Key | ark:/13960/t3227qj2d |
| Language | English |
| Publisher Date | 1980-01-01 |
| Access Restriction | Open |
| Subject Keyword | Environment Pollution Contaminants Monitors Environment Protection Frequencies Smoke Laser Beams Detection Laser Applications Plumes Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
