Hello G.H., Wednesday, June 06, 2001, 5:13:30 PM, you wrote:
GHaoEML> Before we go crazy over the pictures of the "contrails" (short for GHaoEML> condensation trails) let us realize that they are not from the engines. GHaoEML> They form when saturated air is disturbed by the passage of the plane with GHaoEML> possibly some added effect from engine exhaust particles and moisture GHaoEML> condenses out. They made of the same stuff clouds are! Its what rainmakers GHaoEML> try to do when they "seed" clouds. The moisture condenses out! The fact GHaoEML> that its a still windless day on the ground may not indicate the conditions GHaoEML> 30,000 feet up. GHaoEML> G.H. Actually, you had better do your homework. While it is true that "vapor trails" can be formed by the wings, it is due to the change in air pressure from the wing moving through the air. This is normally encountered in dense, humid air (at lower altitudes, especially over a warm body of water, such as a fighter aircraft on climbout from a carrier) during times when the wing disturbs the air greatly, ie a high angle of attack. What you see from the ground ( I am not discounting chemtrails here) under NORMAL circumstances is condensation in the exhaust plume. You see, any time you burn a hydrocarbon in air, you will certainly make H2O! In times past, before the use of high-bypass turbofans, the contrail was further away from the aircraft. With todays engines, the exhaust is mixed with quite a bit of the bypass air before it leaves the exhaust nozzle, and therefore starts to cool rapidly. To say that the contrails you see during the normal flight of a jet aircraft flying at altitude doesn't come from the engines is incorrect. Passenger aircraft making maneuvers that would cause vapor to appear from the disturbance of air by the wing, while flying at altitude, would certainly tear the wings from the body of the craft. -- Best regards, Solar mailto:[email protected] -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
