747 firebomber web site

Leadfoot wrote:

96 tons of water!!!!!

The hell with that, how about 400' AGL and only 140 KIAS?


BUFDRVR

"Stay on the bomb run boys, I'm gonna get those bomb doors open if it harelips
everyone on Bear Creek"

96 tons of water!!!!!

The hell with that, how about 400' AGL and only 140 KIAS?


BUFDRVR

We were a heck of a lot lower in the C-54 on our drops..I think with the
pressuization system, they plan on dropping higher, but it will be hard to be
precise at all, or go into canyons.

The 747 will be good for a deluge from around 600-800 AGL, but its going to
be a deluge, and not something that will be precise or that you can do with the
"grubbies" nearby


Ron
Tanker 65, C-54E (DC-4)
Silver City Tanker Base

Carpet Water Bombing?

Jack

"Ron" wrote in message
...
96 tons of water!!!!!

The hell with that, how about 400' AGL and only 140 KIAS?


BUFDRVR

We were a heck of a lot lower in the C-54 on our drops..I think with the
pressuization system, they plan on dropping higher, but it will be hard to
be
precise at all, or go into canyons.

The 747 will be good for a deluge from around 600-800 AGL, but its going
to
be a deluge, and not something that will be precise or that you can do
with the
"grubbies" nearby


Ron
Tanker 65, C-54E (DC-4)
Silver City Tanker Base

Carpet Water Bombing?


Like a 400,000 pound cow, ****in' on a flat rock.

"Surrender now, or the next load is going to be pig urine, headed for Falluja!"

Ron wrote:

96 tons of water!!!!!

The hell with that, how about 400' AGL and only 140 KIAS?


BUFDRVR

We were a heck of a lot lower in the C-54 on our drops..I think with the
pressuization system, they plan on dropping higher, but it will be hard to be
precise at all, or go into canyons.

The 747 will be good for a deluge from around 600-800 AGL, but its going to
be a deluge, and not something that will be precise or that you can do with the
"grubbies" nearby


i know its an old thread, but why not? The Martin Mars can drop 7200 gallons in one
go. You
don't need to be precise with that sorta load. And have you seen a mars? They make
the C-54 look
small.

i know its an old thread, but why not? The Martin Mars can drop 7200 gallons
in one
go. You
don't need to be precise with that sorta load. And have you seen a mars? They
make
the C-54 look
small.

Martin Mars drops water on a fire, which is different than dropping retardant
along the flanks and head of the fire.

Precision is often needed because of working in close proximity to ground
resources. The Mars drops a lot of water on hot areas of the fire. Its just a
different kind of resource than a retardant dropping tanker.

A 747 tanker can have a role, but a big part of forest fire suppression is
about getting there soon with aircraft based nearby, rather than having to send
aircraft from across the country



Ron
Tanker 65, C-54E (DC-4)
Silver City Tanker Base

"BUFDRVR" wrote...

96 tons of water!!!!!

The hell with that, how about 400' AGL and only 140 KIAS?

OK. I don't know where you saw 140 knots (I skimmed tie site, and didn't
notice it). Numbers are for a -400, but -200 numbers should be similar:

Call it 159 tons of airplane and 96 tons of water for ZFW of 255 tons. For
a short cycle (2 hours airborne, plus reserve) try 35 tons of fuel, 1/3 of
which has already been burned. GW at beginning of drop is about 280 tons.

VREF for flaps 25 is 158 KIAS, so 170 KIAS is about the slowest I'd want to
try. That is also the number given in a story in the Portland newspaper
this morning.

John R Weiss wrote:

The hell with that, how about 400' AGL and only 140 KIAS?

OK. I don't know where you saw 140 knots

I watched the mpeg on the site. The narrator said; "at 400' and 140 knots, the
747 can....."


BUFDRVR

"Stay on the bomb run boys, I'm gonna get those bomb doors open if it harelips
everyone on Bear Creek"

"BUFDRVR" wrote...

I watched the mpeg on the site. The narrator said; "at 400' and 140 knots,
the
747 can....."

What do they call that in Marketing 101 -- "puffery"?

John R Weiss wrote:

I watched the mpeg on the site. The narrator said; "at 400' and 140 knots,
the
747 can....."

What do they call that in Marketing 101 -- "puffery"?

Seemed awful slow to me for a half million pound jet, but having never flown an
aircraft with slats, I hear they're a wonderful device.




BUFDRVR

"Stay on the bomb run boys, I'm gonna get those bomb doors open if it harelips
everyone on Bear Creek"