Originally Posted by
ManaAdaSystem
I thought this discussion was about jet fuel?
Petrol will catch fire very easily. Jet fuel not.
Again, see the video postet earlier.
The video posted is a YouTube video that contains many technical errors and the guy clearly does not fully understand what he is talking about (plus anyone who stands over a jar full of petrol and throws a match into it is clearly lacking in brain cells!). The fact is that vapour most definitely does burn! the term "flammable liquid" is technically a misnomer as it not the liquid that burns but the vapour that it gives off when combined in the right proportions with oxygen in the atmosphere. All flammable liquids have a property known as the flash point which is the temperature above which it will give off sufficient vapour for it to ignite if a source of ignition is present. In the case of volatile fuels such as avgas or mogas that temperature is around -45 deg C so they give off flammable vapour at all normal temperatures. JetA1 has a flash point of at least 38 deg C so needs to be heated above that temperature before it will give off sufficient vapour to ignite.