General Category > OT Knowledge
Contrails
Efrogwr:
A spin-off from Steph's post in the Malaysian airliner crash thread, with a query for those that know about aerodynamics.
Steph's explanation of contrail formation is very clear. Do wingtip devices cause contrails in the wingtip vortices to be smaller?
Chris S:
Yes, but they are teeny weeny compared to those produced by engines.
Wing tips make contrails by reducing air pressure low enough to induce condensation.
Engines do it by pumping water vapour out in the exhaust, as part of the combustion of fossil fuel. Only the latter has a fuel supply behind it.
Asterix, the former Gaul.:
Remember watching A10s on the Suffolk coast. They were doing practice manouevres and when they pulled out from a dive or did a kind of barrel roll you could see lovely silvery trails like concentrated heat haze coming from the wing tips.
Mr Larrington:
Any fule kno that "contrails" (sic) are actually the result of shadowy agents of the military-industrial complex spraying chemicals into the upper atmosphere, for who knows what purpose. Srsly.
Srsly, I know someone who actually believes this :o
Efrogwr:
--- Quote from: Mr Larrington on 20 July, 2014, 05:30:50 pm ---Any fule kno that "contrails" (sic) are actually the result of shadowy agents of the military-industrial complex spraying chemicals into the upper atmosphere, for who knows what purpose. Srsly.
Srsly, I know someone who actually believes this :o
--- End quote ---
So do I.
Navigation
[0] Message Index
[#] Next page
Go to full version