- Foam path
A foam path is the
aviation safetypractice of spreading a layer of fire suppression foam on an airport runwayprior to an emergency landing. Originally, it was thought this would prevent fires, but the practice is now discouraged.
FAArecommended foam paths for emergency landings beginning in 1966, but withdrew that recommendation in 1987, although it did not bar its use. In 2002, a circular recommended against using pre-foaming except in certain circumstances. In particular, the FAA was concerned that pre-foaming would deplete firefightingfoam supplies in the event they were needed to respond to a fire. Also, foam on the runway may decrease the effectiveness of the landing airplane's brakes, possibly leading to it overshooting the runway.
Foam is still used in aviation firefighting, usually in conjunction with
* [http://www.boeing.com/commercial/airports/faqs/runwayfoamrequirements.pdf Runway foaming requirements] -
Boeingrecommendations to airplane operators (PDF)
* [http://www.faa.gov/airports_airtraffic/airports/airport_safety/certalerts/media/cert0204.rtf CertAlert No. 02-04] - FAA circular from 2002 recommending against runway foaming (rtf)
* [http://www.airdisaster.com/download/737gear.shtml Foam landing video] - Piedmont Airlines (now
US Airways) 737 lands in a foam path in the 1980s
Wikimedia Foundation. 2010.
Look at other dictionaries:
foam path — A path of fire extinguisher foam laid on a runway by firefighters to assist an aircraft in an emergency landing by minimizing the risk of fire from metal scraping against the runway surface. Also called a foam carpet … Aviation dictionary
foam path — A path of fire extinguisher foam laid on a runway to assist aircraft in an emergency landing … Military dictionary
foam carpet — A layer of foam put on the runway by firefighters to reduce the fire risk and cushion the impact of an aircraft making a wheels up landing. Also called a foam strip or a foam path … Aviation dictionary
foam core — or foam board A strong, stiff, resilient, and lightweight board of polystyrene laminated with paper on both of its sides. It may be any of several thicknesses, in any of a variety of colors. It is often employed as a surface on which to… … Glossary of Art Terms
Fire fighting foam — Firefighters sprayed foam on structures in the Mammoth Hot Springs complex on September 10, 1988 during the Yellowstone Fires. Fire fighting foam is a foam used for fire suppression. Its role is to cool the fire and to coat the fuel, preventing… … Wikipedia
Spin foam — In physics, a spin foam is a topological structure made out of two dimensional faces that represents one of the configurations that must be summed to obtain a Feynman s path integral (functional integration) description of quantum gravity. It is… … Wikipedia
spin foam — noun A topological structure made out of two dimensional faces that represents one of the configurations that must be summed to obtain a Feynmans path integral description of quantum gravity … Wiktionary
Denez Prigent — in 2005 Background information Born 17 February 1966 (1966 02 17) (age 45) Santec … Wikipedia
Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… … Universalium
Space Shuttle — STS redirects here. For other uses, see STS (disambiguation). This article is about the NASA Space Transportation System vehicle. For the associated NASA STS program, see Space Shuttle program. For other shuttles and aerospace vehicles, see… … Wikipedia