Hot Start ??
Thread Starter
Joined: Jun 2004
Posts: 112
Likes: 0
From: Far side of the moon left after the big crater
Hot Start ??
Can anyone provide information / pics of an L-10-11's "hot start" recently displayed by an EX DELTA Royal Jordinian operating on behalf of Helios there on Monday morning in DUB? Apparently it is quite normal for a flame of nearly 50 feet to be shot out of the back ? Anyone have any pics or info as to why it happens ??
Joined: Nov 2003
Posts: 743
Likes: 0
From: Slovenia
Or check out this video ("wet start" of a Braathens 737-500):
http://gassundertrykk.com/movie/engine-start.wmv
http://gassundertrykk.com/movie/engine-start.wmv
Joined: Aug 1999
Posts: 978
Likes: 0
From: EGCC
HD
Don't know whether I should admit to it, but I well remember the nice 'smokie' starts on the DA Ambassadors at Manchester.
Almost as good as the departures with the CV990A!?
Scottie Dog - going grey around the edges !!
Almost as good as the departures with the CV990A!?
Scottie Dog - going grey around the edges !!
Joined: Dec 2001
Posts: 160
Likes: 0
From: UK
Interesting to see that hot start in the Braathens 735. But what exactly is a hot start?? Why is it called that? I assume it is because flames shoot out the back of the engine and not to do with the engine temps being warm following a short turn-around or something.
And is a tactical PA announcement to the passengers warning them not to panic at the fire and smoke on start-up in order on such an occasion?
Hope my car doesn't do that tomorrow morning...
And is a tactical PA announcement to the passengers warning them not to panic at the fire and smoke on start-up in order on such an occasion?
Hope my car doesn't do that tomorrow morning...
Joined: Nov 2003
Posts: 743
Likes: 0
From: Slovenia
I forgot to mention that there were no passengers on the Braathens 737 when the video was made. The circumstances of that engine run are given here:
http://gassundertrykk.com/movie/index.html
http://gassundertrykk.com/movie/index.html
Joined: Oct 2002
Aviation Qualifications: PPL
Posts: 8,204
Likes: 348
From: London UK
Anyone old enough to remember Airspeed Ambassadors starting up? Used to be LVPs for about 10 minutes afterwards!!
It was a general feature of radial engines, but some were worse than others. In a radial with all the cylinders in a star arrangement, it was not really possible to prevent some of the lubricating oil all around the con rods and crankshaft in the centre of the engine from slowly leaking down into the lower cylinders, especially with worn piston rings, whence it would be burnt off when the engine was started up, with the associated smoke from the burning oil.
Doesn't happen with a car engine as the cylinders are all above the oily parts.
Joined: Sep 2002
Posts: 870
Likes: 0
From: UK
Not something you will see very often, even as an airport worker. Only seen one so far, on an Air France Barbie Jet (Emb 145). Quite spectacular, looked like they'd fitted afterburners. Fortunately, it was only momentary, and the engine was not shut down as a result.
In practice, I doubt the pushback crew who visually monitor the engine starts from the front of the aircraft would actually stand and watch a hot start as long as the one in the Braathens clip. Or at least I hope they wouldn't.
They usually have a fairly healthy sense of self-preservation.
In practice, I doubt the pushback crew who visually monitor the engine starts from the front of the aircraft would actually stand and watch a hot start as long as the one in the Braathens clip. Or at least I hope they wouldn't.
They usually have a fairly healthy sense of self-preservation.
