F-111 'dump & burn'...
River
F-111 use when it performs a public display 'dump & burn' ?... Can anyone
assist with this question, thanks.
River
James Gray
"River" <ri...@powerup.com.au> wrote in message
news:9Sdq6.6280$0N3....@news-server.bigpond.net.au...
Brash
--
Bring on the herbivores, I'm hungry.
"River" <ri...@powerup.com.au> wrote in message
news:9Sdq6.6280$0N3....@news-server.bigpond.net.au...
Bishop
"Brash" <acrobat...@hotmail.com> wrote in message
news:3aa9ac1d$1$25490$7f31...@news01.syd.optusnet.com.au...
Andrew Sanderson
Andrew
Brash
--
Bring on the herbivores, I'm hungry.
"Andrew Sanderson" <aks...@senet.com.au> wrote in message
news:3AAA2F6A...@senet.com.au...
Martin Taylor
Br> I heard it was the equivalent of a 44 gallon drum a second.
That's over 200 litres/sec. Sounds like an awful lot. What size pipework
is discharging this fuel? For that sort of capacity and flow, you'd
require extremely high pressure. Either that, or large diameter
pipework.
Take a "p" out of gipps for an email reply
Brash
tend to believe him. You think about it, that's a bloody big flame. I've
closely inspected the nozzle that the fuel is discharged through and it's
about the size of a large-ish garden sprinkler.
--
Bring on the herbivores, I'm hungry.
"Martin Taylor" <mta...@gipps.com.au> wrote in message
news:0001...@chello.com.au...
Eddie
on the loudspeaker quoted some figures regarding this and I remember
thinking to myself that it was a bloody lot of fuel in a short period of
time. So 200 litres/sec doesnot sound unreasonable.
Sorry but my memory isn't as good as it should be.....
Eddie
Martin Taylor <mta...@gipps.com.au> wrote in message
news:0001...@chello.com.au...
BB
Regards,
BB
Martin Taylor
Br> I got the info from an F111 techo. He may have been yanking my chain,
Br> but I tend to believe him. You think about it, that's a bloody big
Br> flame. I've closely inspected the nozzle that the fuel is discharged
Br> through and it's about the size of a large-ish garden sprinkler.
Where I work, we have pumps that have that sort of capacity. They have
discharge pipework of around 250-300mm diameter, and a working pressure
of around 21 mpa. They're driven by 11kv 11 Mw motors. I'm trying to
figure out how something in an aircraft could deliver a similar flow
rate.
Paul Repacholi
> Brash said..
> > I got the info from an F111 techo. He may have been yanking my
> > chain, but I tend to believe him. You think about it, that's a
> > bloody big flame. I've closely inspected the nozzle that the
> > fuel is discharged through and it's about the size of a large-ish
> > garden sprinkler.
> Where I work, we have pumps that have that sort of capacity. They
> have discharge pipework of around 250-300mm diameter, and a working
> pressure of around 21 mpa. They're driven by 11kv 11 Mw motors. I'm
> trying to figure out how something in an aircraft could deliver a
> similar flow rate.
As I remember the photos, the dump exit takes up a good bits of the area
between the tailpipes, so it's no garden hose. Alps, you have only a few
M of pipe, no or few bends, and that helps lots.
What is the dump rate on the heavys if they pull the plug on the tanks?
--
Paul Repacholi 1 Crescent Rd.,
+61 (08) 9257-1001 Kalamunda.
West Australia 6076
Raw, Cooked or Well-done, it's all half baked.
Murray Jones
dont confuse Afterburner Fuel Flow rate with the Fuel Dump rate. From what
I can recollect the AB Fuel Flow for the F111 is something in the vicinity
of 60 000'ish pounds / hour (per engine). I dont know what the dump rate
is but my educated guess would be around 5000 lbs / hour rate (The F/A-18
is 2000hr and the F15E was about 4000 from memory).
"Brash" <acrobat...@hotmail.com> wrote in message
news:3aa9ac1d$1$25490$7f31...@news01.syd.optusnet.com.au...
Brash
--
Bring on the herbivores, I'm hungry.
"BB" <anth...@DELETEhotmail.com> wrote in message
news:G3Gq6.1588$zW2....@ozemail.com.au...
NM
wrote:
>Imperial gallons or US gallons? :-)
>
>Regards,
>BB
Imperial seconds or metric seconds mifgr be more to the point!
Grassy Noel
BB <anth...@DELETEhotmail.com> wrote in message
news:G3Gq6.1588$zW2....@ozemail.com.au...
Australian eh! No worries mate!
205/44 = more than 3.8, so imperial gallons. Isn't maths wonderful!
FYI: 1 barbie = 22 Australian gallons.
Hey BTW, what size is your typical all-purpose drum in the USA?
cheers
Neil
Martin McKowen
Cheers
Marty
Grassy Noel wrote in message <3aae3b66$0$77...@echo-01.iinet.net.au>...
Ian
flow rate.
I use to know it but I haven't worked on the F111 for over 20 years now.
From memory what happens when dump is selected ALL the fuel boost pumps
start and the
dump manifold is opened. Now with all the pumps running the flow rate is
incredible.
The dump and burn was not done for many years because the USAF lost an F111
due to
a flash back into the saddle tanks. A gravity cap was put on with the tab
into the airflow
the cap came off in flight. BANG!!!!!!
Ian
>
> A typical D&B for Riverfire (Brisbane, September) lasts ~30s. At 200 L/s
that
> is equivalent to 6 kL (ie 6 cubic metres). Compare that to the volume of
dirt
> you get dumperd on your front lawn when you order 6 m3 from a landscaping
> supply place and it comes in a very large truck!
>
> A 737 burns about 3 kL between SYB and MEL, so in context, 200 L/s would
seem
> to be a bit of an overexaggeration.
>
>
Ian
It was never intended to be a crowd pleaser.
It makes a bloody mess when selected on the ground.
Ian
>
> One wonders if there is a difference in flow rate
> between an 'entertainment' burn and a real one?
>
> Geoff
Chris Hake
CBH
Frere wrote in message ...
>>From: "Brash" <acrobat...@hotmail.com>
>>Subject: Re: F-111 'dump & burn'...
>>Date: Sun, 11 Mar 2001 17:00:35 +1100
>
>>I got the info from an F111 techo. He may have been yanking my chain, but
I
>>tend to believe him. You think about it, that's a bloody big flame. I've
>>closely inspected the nozzle that the fuel is discharged through and it's
>>about the size of a large-ish garden sprinkler.
>
>>--
>>Bring on the herbivores, I'm hungry.
>
>
>>"Martin Taylor" <mta...@gipps.com.au> wrote in message
>>news:0001...@chello.com.au...
>>> Brash said..
>>>
>>>
>>> Br> I heard it was the equivalent of a 44 gallon drum a second.
>>>
>>> That's over 200 litres/sec. Sounds like an awful lot. What size pipework
>>> is discharging this fuel? For that sort of capacity and flow, you'd
>>> require extremely high pressure. Either that, or large diameter
>>> pipework.
>
Martin McKowen
Where are you located now?
Cheers
Marty
Chris Hake wrote in message <98489589...@ns.idl.com.au>...
Darren Crick
Martin McKowen <martin...@ozemail.com.au> wrote in message
news:54kt6.5734$zW2.2...@ozemail.com.au...
Martin Taylor
CH> An ex Pig driver tells me it's about 1000lb per minute.
That sounds better. That's a bit over 7 litres a second. A vast
difference to 205 litres a second.
Martin Taylor
DC> I saw it mentioned on a program recently, 260 litres per minute...
Various figures so far, from 205 l/s to 7 l/s and your 4 l/s. A large
variation, and the lower figures are what I'd go for, I think.
I can't imagine the flame size if you were pumping 200 litres every
second into an ignition source.
Darren Crick
I think I said per minute, therefore 4 per second is close enough to right.
Cheers,
Darren
Martin Taylor <mta...@gipps.com.au> wrote in message
news:0001...@chello.com.au...
Frere
>From: "Darren Crick" <dcr...@iname.com>
>Subject: Re: F-111 'dump & burn'...
>I saw it mentioned on a program recently, 260 litres per minute...
Now that sounds a little more realistic! There's about a 46-fold difference
between the 200 L/s figure thats been doing the rounds and the 260 L/min.
Graeme Hogan
"Frere" <philip.r...@bigfoot.com.spiced.ham.in.a.can.au> wrote in
message >
> >I saw it mentioned on a program recently, 260 litres per minute...
>
> Now that sounds a little more realistic! There's about a 46-fold
difference
> between the 200 L/s figure thats been doing the rounds and the 260 L/min.
>
That's only 4 litres/second.
Bloody big flame.