lol

Hi Daft and all else ,
Right when a plane …prop , turbo prop ….jet …ram jet ….rocket …..and fuck me i dont know what it is but its fucking hot !!! Hits high altituded bear in mind the pressure changes from day to day area to area you get condensation . Trust me a con trail …….or condensation trail is normal . Now if that trail falls to earth …..you smell or taste a sudden odour ….people or wild life begin to act weird etc ….then if not trust me it is just a CONDENSATION TRAIL !!!! . A chemical weapon to be realised at such a height and be effective would be huge amounts ……so why not deliver it low level …less amounts and less warning ?

Just my view

regards
Mungo

Contrails ( /ˈkɒntreɪlz/; short for “condensation trails”) or vapour trails are artificial clouds that are the visible trails of condensed water vapour made by the exhaust of aircraft engines. As the hot exhaust gases cool in the surrounding air they may precipitate a cloud of microscopic water droplets or, if the air is cold enough, tiny icecrystals.^[1]
The wingtip vortices which trail from the wingtips and wing flaps of aircraft are sometimes partly visible due to condensation in the cores of the vortices. Each vortex is a mass of spinning air and the air pressure at the centre of the vortex is very low. These wingtip vortices are not the same as contrails.
Depending on atmospheric conditions, contrails may be visible for only a few seconds or minutes, or may persist for many hours which may affect climate.^[2

@Minghead 448139 wrote:

what you doing up and about at that god forsaken hour? slept yet or still giving it welly?

I just love the early mornings with coffee and fresh news.

Hi Daftfader ,
No in an emergency an airacraft has to be a certain weight to land …so if its just took off its heavily ladened with fuel it cant just turn around and land . So depending on the emergency it can either ……dump fuel !!!! …..usually on the airliners from the wing tips or some from the tail , usually not behind the engines for obvious reasons !!! ……a 747 flame thrower isnt a good idea lol . Or it can circle and burn the fuel …..although if your on a flight from UK to America ….8 hours of going around in circles might get a bit much so fuel dumps are common . Normally they try to dump fuel away from populated areas or at height where the fuel will dissapate , but if the shits hit the fan they will dump any where …..would you rather droplets of fuel or a airlinner coming down on your house fully fuelled !!!! …..but thats another thread lol .

Also as extraslim said wing tips , flaps and propeller tips on aircraft or rotors on helicopters will produce under certain atmospheric conditions a vapour trail . APU’s or GTS’s ….basically the same thing a small jet engine that starts the engines …..like a starter motor . On certain aircraft can produce a vapour trail ….not all just some . The smoke emitted from engines can be the age of the engine …..older jet engines smoked like a chimney !!!! . However also the type of fuel !! , some fuels have different mixes of aviation fuel and anti freeze . That is to say the higher you go the colder it gets , hence a cessna 172 dont leave lot of smoke behind it unless its on fire !!! . Yet some High altitude Aircraft leave a tell tale smoke trail …….this can be because the anti freeze …….but if it didnt it would freeze !!!! and back to the fully fuelled airlinner on ya roof !!! .

Just what ive learnt from my job is all

regards
Mungo

i only learnt the bare minimum of planes cause i think the avro areo was a sick design, a bit ahead of its time. : )
but i only really like the thing that makes it fly lol

Antonov 124…..thats a pretty sizeable carrier lol do they still even use those things?

wish piston driven motors were used commercially today, the shier crudeness of an old V12 Merlin could with todays metal quality and manufacturing methods, a once 1800-2000 BHP motor into a 4500-6000+ bhp motors. supercharger technology has advanced loads, like, blocks, piston heads, piston rings, cranks cams blah blah blah….. so yeah, the rolls royce V12 could be a BANGIN’ psycho killer death trap motor lol