FOG MAY FADE AT SOCKED-IN AIRPORTS

THE CHEMICAL DISPERSION OF WARM FOG WILL BE INTRODUCED AT MAJOR U.S. AIRPORTS IN 1969. A GROUND UNIT, CALLED FOG-SWEEP, THAT CONSISTS OF A COLLAPSIBLE PLASTIC TUBE OVER 100 FT LONG IS MOUNTED OVER AN AIR BLOWER THAT SHOOTS CHEMICALS 200 FT HIGH. THESE CHEMICALS CAUSE THE TINY FOG DROPLETS TO CLING TOGETHER IN DROPS HEAVY ENOUGH TO FALL AS RAIN, OPENING CLEAR SWATHS. AERIAL SEEDING WILL ALSO BE USED. THE BLOWER CAN OPERATE ONLY WITH POLYELECTROLYTES AND SURFACTANTS, THE FORMER ALTERING THE IONIC CHARACTER OF FOG DROPLETS AND THE LATTER RELAXING THEIR SURFACE TENSION, CAUSING THEM TO CHANGE SHAPE AND SIZE. ABOUT $35,000 A MONTH DURING A THREE MONTH FOG SEASON IS THE ESTIMATED COST. SHUTDOWNS BY AIRLINES CAUSED BY FOG COST 75 MILLION ANNUALLY.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08919526
• Supplemental Notes:
  • Vol 181, No 2 P 36, 2 PHOT
• Publication Date: 1968-7-11

Media Info

• Serial:
  • Engineering News-Record
  • Publisher: McGraw-Hill, Incorporated
  • ISSN: 0891-9526

Subject/Index Terms

• TRT Terms: Airports; Chemistry; Costs; Electrolytes; Fog dispersal; Methodology; Surface active agents; Surface tension
• Old TRIS Terms: Polyelectrolytes
• Subject Areas: Aviation; Finance; Highways; Maintenance and Preservation; Terminals and Facilities;

Filing Info

• Accession Number: 00218404
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 9 1994 12:00AM