Jet Provost Brake fire at Bruntingthorpe

How does one day of gremlins suddenly become a liability?

Rob

Spraying water directly onto a brake fire including burning oil is a bad thing, it can cause explosions. One of the things learned by professionals. Dry powder is recommended as an extinguishant of first choice.

I was taught the same in the RAF, but it changed as Dry Powder while snuffing out the fire does not remove the heat source, so it can re-ignite, a water mist is what they recommend these days, the photos I have you can see he is bouncing the jet off objects and the ground and not aiming directly at the source.

Same with CO2, it used to be recommended as an extinguisher for fuel fires in the RAF, but was subsequently dropped by the RAF after they found that it can cause a static spark and reignite the fire.

I think on the pprune thread they explain a bit more about the choices of extinguisher.

https://www.pprune.org/military-aviation/612652-kick-fires-light-tyres.html

Thank you Tony, I’ll look into that 🙂

The last time I saw a brake fire, it was on a Rockwell B-1 in 2008. It took out lots of hyd fluid, caused the aircraft to steer into a blast wall where it lodged, the crew escaped and the aircraft and its war load (unarmed) went sky high! It was an impressive sight in the morning, a nose cone 4 engines a spar and that was all that remained recognisable amongst the charred remains. Luckily I was in the bar at the time, so well protected from anything painful!
The remains were buried in the desert later that week.
I never knew the identity. Happened in Al Udeid.

From my time in the military I recall hot brakes (not necessarily fires) were a fairly common event (my office was on the “crash phone” net so I received all the alerts).
But those were faster, heavier types than a JP.

Spraying water directly onto a brake fire including burning oil is a bad thing, it can cause explosions. One of the things learned by professionals. Dry powder is recommended as an extinguishant of first choice.

Kurt, you can get the larger ones off Flickr, click on the downward pointing arrow and select a size 🙂

That looks like it happened under tow and unlikely to happen at speed.
Tony: amazing pictures! I only have my phone st the moment but I feel I may need that Buccaneer on my garage wall, it’s stunning! Thank you for sharing your memories.

Cheers,
Kurt

Have they got one or access to one?

BTW seen this?

https://afors.com/index.php?page=adview&adid=17868&imid=0

http://www.rainbowaviation.co.uk/parts.html

Rainbow show one on their parts listing

http://www.rainbowaviation.co.uk/pdfs/hunterparts.pdf

Lucky it didnt happen at speed.

Sadly it needs a new leg casing

Awww crap, that doesn’t look good, I thought it retracted aft, so much for my basic training on them, I do hope the mounts and bulkheads are ok and they can get it repaired.

The hunter nose leg retracts forward, but in this case the leg collapsed rearwards.
I hope it is a quick fix, although it does not look like it.
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Buccaneer by Tony Taylor, on Flickr

Hot starts can happen anytime, had a few myself, normally a quick dry crank and a second start and all is well, but unfortunately they only had two cartridges fitted, it’s the vagrancies of vintage jets, heck you want to try coaxing a Derwent into life when it doesn’t want to know. Brake fire was a simple seal that wouldn’t be forseen and was dealt with quickly and efficently, they happened in the services as well on the JP. The gear could have been any factor, jerk of the tug etc, brakes on.. Brunty operate a first class show and safety is paramount from what I have seen over the years. Sheer bad look and atrocious weather didn’t help this year.

It all sounds a bit of a liability to me. Collapsing gear legs, hot starts and brake fires, all at the same event.

FB

That sounds better than you might think, as it means it hasn’t been pulled out but possible has had a jack failure or linkage failure and has “retracted” in the correct sense, so the main nose gear mounts are probably OK one hopes. And at least no one was in or under the nose at the time.

It did not look ok ,the leg had collapsed backwards .

I hope it’s ok, I take it they abandoned starting it as it only had two carts in and would want a dry crank to clear the residual fuel out after the first start.
Towing your loading the leg the other way

l=https://flic.kr/p/296ANeH][/url]Hunter wet start by Tony Taylor, on Flickr

I felt for them all as the weather was atrocious but they carried on regardless, hats off to them all.

Did the Hunter guys manage to move the Hunter ok after the Nose leg collapse (While towing)?
It was a good job the engine did not start & therefore did not do a run!