Not a licensed pilot, but had a military grade in servicing of planes. It is an exhaust of APU (auxiliary power unit). Usually it is a small gas turbine engine in the tail of the plane with alternator to provide autonomous power for plane systems and main engine starters. Some models have output shaft to drive different pumps and other mechanical things in plane If you are lucky ehough to know somebody from air company or airport stuff, you could obtain that nifty engine from written off plane and f.e. build a real gas-turbine car replacing usual internal combustion engine with APU and get an outstanding sound during starting and running your car. However they are not very effective as usual engines, so you have to prepare for fuel consumption rates as high as 20-30 liters per 100km for small car and engine. But it absolutely worth it. :)
If your APU is broken and have problems with fuel or ignition, you could easily get a lot of fuel vapour or smoke on the exhaust. That is what you see on that video.
Are you referring to the pictures of the round tanks in two rows down the plane interior? If so, those are likely not chemtrail containers, but instead ballast tanks for flight testing weight and balance.
I've often wondered what the small tube opening on the tail of 737 and 767s are for.
Any pilots here want to comment?
Not a licensed pilot, but had a military grade in servicing of planes. It is an exhaust of APU (auxiliary power unit). Usually it is a small gas turbine engine in the tail of the plane with alternator to provide autonomous power for plane systems and main engine starters. Some models have output shaft to drive different pumps and other mechanical things in plane If you are lucky ehough to know somebody from air company or airport stuff, you could obtain that nifty engine from written off plane and f.e. build a real gas-turbine car replacing usual internal combustion engine with APU and get an outstanding sound during starting and running your car. However they are not very effective as usual engines, so you have to prepare for fuel consumption rates as high as 20-30 liters per 100km for small car and engine. But it absolutely worth it. :)
If your APU is broken and have problems with fuel or ignition, you could easily get a lot of fuel vapour or smoke on the exhaust. That is what you see on that video.
Are you referring to the pictures of the round tanks in two rows down the plane interior? If so, those are likely not chemtrail containers, but instead ballast tanks for flight testing weight and balance.