Accession Number:

AD0744471

Title:

Fogwash 1, An Experiment Using Helicopter Downwash

Descriptive Note:

Technical rept.

Corporate Author:

ARMY ELECTRONICS COMMAND WHITE SANDS MISSILE RANGE NM ATMOSPHERIC SCIENCES LAB

Personal Author(s):

• Dickson, D. H.

Report Date:

1972-04-01

Pagination or Media Count:

59.0

Abstract:

The report documents Project Fogwash 1, an experimental program in which the technique of helicopter downwash for fog dissipation was used. Meteorological and microphysical data collected during the experiment are presented. Meteorological data indicated an improvement in visibility as a result of the downwash. There were indications in the microphysical data obtained that particulate number varies directly as relative humidity and inversely as temperature and that sulfate particles increase with increased relative humidity.

Descriptors:

• *HELICOPTERS
• *FOG
• SCATTERING
• MILITARY FACILITIES
• STATISTICAL DATA
• ATMOSPHERIC TEMPERATURE
• WEATHER FORECASTING
• PARTICLES
• VISIBILITY
• DIFFUSION
• METEOROLOGICAL INSTRUMENTS
• SULFATES
• ALABAMA
• RUNWAYS
• DOWNWASH
• HUMIDITY
• MICROMETEOROLOGY

Subject Categories:

• Meteorology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE