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"Lead
Soup"
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"In
1945 the Luftwaffe fighters would still come after us,
but would avoid it if at all possible. Because
we could fly such tight formations and the degree
of firepower that we had, it would be nothing but 'lead
soup' for them."
-Ben
Reisdorf, 441st Bomb Squadron
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The
Martin 250CE Full Power Turret
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The
Martin 250CE full-power turret was located forward to
the waist gun and just aft of the rear bomb bay. It
was designed as a "drop in" unit and was hung
from the upper fuselage. The unit rotated on a large
ball bearing ring. It weighed 655 lbs, was 6 /12 feet
tall, 4 ft. in diameter, and had a 3/8" protective
armor plate skirt that rotated with the turret to provide
protection to the gunner. The .50-caliber guns &
mount, controls, site, and cartridge canisters (400
r.p.g.) were all a part of the unit. It featured a drop
seat the was brought up and latched once the gunner
lifted himself into position. Power was derived from
a General Electric amplidyne motor.
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Domes
of Destruction
The
Marauder used Martin's own power
turret. It was highly successful and used
in a variety of aircraft including, but
not limited to, those produced by Consolidated
and Lockheed as well.
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Operating
the turret was fairly intuitive. There were two hand
grips. A rocking motion fore and aft adjusted gun
angle and lateral movement was performed by twisting
of the handgrips with handle displacement being converted
to rate of rotation. Both movements could be performed
simultaneously to created a diagonal swath of fire.
Triggers were located on both grips and activation of
either fired the guns.
Azimuth
was a full 360 degrees with up to an 85 degree elevation.
To protect the vertical stabilizer, there were fire
interrupter cams that ceased gunfire if guns were aimed
near the Marauder's tail. Similarly, fire interrupters
were set to give a 4 inch clearance for the propeller
arcs an wing tips that under full flight loads could
flex up to 6.8 inches.
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The
Tail Sting
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The B-26A
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The
nascent B-26 was equipped with a single
hand held .30-caliber machine gun which
later in the B-26A series was replaced by
a .50 gun with 400 rounds of ammunition.
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Introduction of the "Twin Fifties"
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The
New "Twin Fifty" Stinger
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The
first significant revision of the tail gun
was seen with the B-26B whereby the single
machine gun was replaced by two hand-held
.50 calibers in a new stepped-down tail
position. Each gun was supplied with 1,500
rounds of ammunition that was fed from containers
in the aft bomb by on a pair of patented
Martin remote roller tracks located along
each side of the fuselage interior.
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Bell Type M-6 Turret
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Bell
Type M-6 Turret
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Starting
with the B-26B-20-MA and B-26C-20-MO, the
tail gun assembly was redesigned. The
hand held "twin-fifties" were
replaced by a power-operated twin .50 caliber
electro-mechanical Bell Type M-6 turret.
The now blunt, rounded-off installation
visibly changed the Marauder's tail profile.
The Bell type M-6 tail turret had a transparent
Plexiglas cap through which the guns protruded.
The guns were hydraulically-boosted
and had a 90-degree cone of fire behind
the aircraft. The gunner was protected by
armor platting stationed between him and
the guns. The turret was operated by
a mechanical linkage which moved the N-8
gunsight and guns in tandem. The gun
movement was very fast, up to 35-degrees
per second.
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Bell Type M-6A Turret
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Bell
Type M-6A Turret
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The
Bell M-6 power-boost tail turret was deleted
and replaced by the M-6A, a modified version
with a flexible canvas cover over the end
of the gun position starting with B-26F-2-MA/B-26F-6-MA.
With
the B-26G-10-MA/B-26G-11-MA, a tail gun
shell collector pan was now fitted as standard
below the position on the bottom of the
fuselage.
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Ventral
and Waist Guns
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A
flexible mount for a single .30-caliber designed to
fire through the rear crew entry hatch was introduced
in the earliest B-26 models, the so called "tunnel"
gun. This was in response to complaints about the lack
of downward defensive firepower. Two waist .30-caliber
waist guns were also added to the earlier models.
The
"B-26B-1" did away with the single ventral
gun and had waist positions augmented. Waist windows
were located on each side of the aft fuselage. Each
window now had a single .50 Browning M-2 Machine gun.
The guns were mounted on swivels. Ammunition canisters
were mounted on the fuselage ceiling with the belts
running down to the guns. Sliding hatches covered the
waist openings when not in use.
With
the B-26C-5-MO, the side waist gun doors were enlarged
and moved one station aft to improve the angle of fire
down and to the front. Also with this model, a single
larger circular scanning window, replacing the two smaller
ones, was located above each waist door to give the
gunner a better view.
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Package
Guns
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Starting
with the B-26B-4 variant, four forward facing .50-caliber
fixed guns were mounted in blisters on each side of
the fuselage below the radio operator and navigator's
compartment. Ammunition was fed from inside the fuselage.
Armament with the B-26-4 now totaled 12 Colt-Brownings,
giving the Marauder as much firepower as a fighter.
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Nose
Guns
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Starting
with the "B-26B-1" a flexible machine gun
was mounted in the center of the nose with a canvas
bag under the breech to collect the shell casings. Ammunition
hung in a box from the right side of the nose frame.
The weapon could be hooked to a clasp on the left to
keep it our of the way while the bombardier was over
the bomb sight. In addition, the "B-26B-1"
had a fixed forward-firing .50-caliber installed in
the lower right-hand side of the nose.
"Sandra
Lee" of the 441st. Flexible .50-caliber and
canvas collecting bag are well seen in this photo. The
lower package gun has been removed.
The
fixed .50-caliber machine gun in the nose was deleted
in the middle of the B-26B-45-MA/B-26C-45-MO production
run (from 42-95979).
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Ordnance
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Bombs
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The
Marauder internal bomb load was between
3,000 and 4,800 depending on the model and
range. The forward bay would hold any of
the following permutations: two-2,000-pound
bombs, four 1,100-pound bombs, six 600-pound
bombs, eight 300-pound bombs, or twenty
100-pounders.
The
smaller rear bay could hold: two 600-pound
bombs, six 300-pound bombs, or ten 100-pounders.
With the Army Air Corp abandoning the
requirement for carrying a total of thirty
100-pounders, the aft bomb bay was sealed
up from the B-26B-45-MA/B-26C-45-MO variants
and onward.
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Torpedoes
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Limited
torpedo-bombing operations were attempted
in the South-West Pacific.
Torpedo
racks were fitted under the fuselage as
factory standard with the B-26B variant.
The torpedo
shackles were deleted starting with the
B-26F-1-MA.
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Copyright(c) 2006 320th History Preservation. All rights reserved.
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