And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
Monday, February 12, 2018
Static electricity discharge experienced by an Airbus over Argentina
CW, saw this discharge quite often in volcanic dust,snow and rain on the super connies and warning stars. front cockpit windows were NESA glass(electrically heated by way of internal layer of conductive material powered from the AC buss). what with static charge build up on the airframe the windows acted like large capacitors. when the voltage got high enough, the arc would flash over the glass to ground. quite disturbing to junior pilots. carried lots of static eliminator wicks on the trailing edges and lightning rods on the tip tanks.
We used to get this effect fairly often in the South Pacific flying DC-10s. When there was some high, dry cirrus clouds at night the static would build up and discharge across the windscreens. On ships the effect is called St. Elmos fire. We would turn the flightdeck lights way down and then invite a new flight attendant up and act really concerned about the lightning display. It was sure to freak them out for awhile. It is actually very beautiful and harmless to the airplane. Good work to this crew for getting video.
Nice !!
ReplyDeleteread this post:
http://quasartechsciencie.blogspot.com.ar/2017/07/2014-mu69-es-observado-desde-argentina.html
CW, saw this discharge quite often in volcanic dust,snow and rain on the super connies and warning stars. front cockpit windows were NESA glass(electrically heated by way of internal layer of conductive material powered from the AC buss). what with static charge build up on the airframe the windows acted like large capacitors. when the voltage got high enough, the arc would flash over the glass to ground. quite disturbing to junior pilots. carried lots of static eliminator wicks on the trailing edges and lightning rods on the tip tanks.
ReplyDeleteMy hat's off to you for driving those things, helped maintain an 'H' for a while. NESA buss was locked out, no need.
Deletegreenman
We used to get this effect fairly often in the South Pacific flying DC-10s. When there was some high, dry cirrus clouds at night the static would build up and discharge across the windscreens. On ships the effect is called St. Elmos fire.
ReplyDeleteWe would turn the flightdeck lights way down and then invite a new flight attendant up and act really concerned about the lightning display. It was sure to freak them out for awhile.
It is actually very beautiful and harmless to the airplane. Good work to this crew for getting video.
ScottJ