Pure Jet Engine Afterburner Sound "Without Music".

The high pitch whine and hiss you here is caused by the Avpin starter, which is on the front of each engine, this produces a rush of gases, into a primary turbine which winds the engine up to 34% within 9 seconds. By that time fuel is being pumped to the engine and its dragging its own air, a very simple way of starting jet engines in the days before electric starters.The two wheeled trolley under the starboard wing is known as a trolley Ack,it uses 2 12v lorry batteries, this gives us 24V which is the minimum voltage required to run all the pumps, etc prior and during the start of each engine. (28v is the 'peak' voltage)
The wire (a 'bigun') runs from the trolley ack to the 'power in' point in the starboard wheel well


In the old days walnuts were used to clean the old smokers (jets) - just toss them in with engine on.Explosive devices could also be detonated to get the jet turbine spinning if no AGE equipment was available (eg emergency) This method was sometimes used on older United States jet engines,if anyone has got video of this please put it on YouTube, it sounds like a great thing to see.

The only way to describe what it sounded like, well its an incredibly loud hissing white noise, kinda painful when near the engine, it was only when I got further away from the jet engine a deep roar was audible.