The XA-38 was a developmental twin-engine heavy fighter produced by the
Beech Aircraft firm. By all accounts, she was a stable and fast aircraft
comparable to even the single engine speedsters of her day. As
promising as her design was, her potential was never realized as the
engines slated for the type were reserved for the four-engined Boeing
B-29 Superfortress heavy bombers taking precedence. As such, only two
XA-38 prototypes were ever built with the project ultimately shelved at
the end of the war. Should she have flown in quantity, she might have
presented the Empire of Japan with a formidable adversary capable of
engaging tanks, vehicles, ships and submarines with equal - and lethal -
fervor.
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The XA-38 Grizzly would have been a potent ground-attack component to the Allied cause if it entered production. |
The United States Army Air Force (USAAF - forerunner to the United
States Air Force) entered into a contractual agreement with Beech
Aircraft in December of 1942 after considering the company's Beechcraft
Model 28 system. The contract called for two initial prototypes to be
built as the XA-38 to fulfill a requirement that involved replacing the
Douglas A-20 Havocs then in service. This new aircraft would have to
exceed in all areas the A-20 excelled at wile making for one truly
potent ground attack component vital to eliminating the dug-in Japanese
foes throughout the Pacific Theater. The A-20, itself, had its origins
in 1939 design and was introduced into operational service in 1941. Its
armament and light bombing capabilities allowed the Havoc to make a name
for itself in the early years of the war, eventually being fielded by
the United States, French, British and Soviet forces. Production of the
type finally ended on September 20th, 1944 and a need for its
replacement was inevitable. The XA-38 achieved first flight on May 7th,
1944 with Beech test pilot Vern Carstens at the controls, launching from
the Beech Aircraft airfield in Wichita, Kansas. It was then flown to
Elgin Field in Florida to undergo testing with the US Army.
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Design of the XA-38 centered around the large 75mm cannon armament
mounted in the nose. The cannon was positioned as such that the barrel
protruded from the nose cone assembly of the clean all-metal airframe.
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The fuselage was of a conventional design featuring a forward cockpit
area and a rear gunner station and fit together as four main sections
for ease of maintenance and repairs. Wings were mid-mounted monoplane
assemblies (based on the airfoil of the NACA-2300 series) joining the
fuselage to each side of the cockpit and designed with a heated leading
edge and surfaces to prevent ice from forming at higher altitudes. On
the wings were fitted twin Wright R-3350-53 series air-cooled radial
piston engines capable of delivering an astounding 2,700 horsepower each
while driving three-bladed, constant speed Hamilton Standard
propellers. Cooling was provided for through specially-designed circular
cowlings and controlled via automatic flaps. The engine nacelles were
fitted to the wing leading edges and protruded some, nearly to the
extension length of the fuselage nose. The empennage was conventional
and featured a horizontal tailplane with two vertical tail fins. The
undercarriage was a typical "tail dragger", with two forward
single-wheeled landing gears and a single-wheeled tail system - all
fully retractable via hydraulics with a backup pneumatic emergency
system. Crew accommodations amounted to the pilot and a gunner housed
under in separate glazed canopies. The gunner sat in a dorsal position
on the empennage.
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While the primary armament of the XA-38 was its nose-mounted 75mm cannon
(the entire forward nose section was hinged to open upwards for easy
access to the cannon), this was further augmented by no fewer than 6 x
.50 caliber Browning air-cooled heavy machine guns. |
Two were fitted to
the lower forward nose section in a forward-firing fixed position while
the remaining four were placed in dorsal ad ventral General
Electric-brand remote-controlled turrets (two machine guns to a turret).
These turrets were traced via periscope sights by the gunner in his
rear cabin. Additional external stores would have been conventional drop
bombs, a torpedo, smoke bombs, depth charges, chemical tanks and drop
tanks. With its accessible hinged nose assembly, the XA-38 was
envisioned to fit other adaptable armament systems on-the-fly.
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Performance-wise, the XA-38 shined based on reports of the test pilots
and servicemen that had the privilege of flying her. |
She posted stable
flight characteristics but was most notable for her top speed. Her speed
was comparable - or better in some cases - to the top-flight
single-engine fighters of her day. In one such trial, a chase plane sent
up to monitor the XA-38 was found lagging behind the twin-engined
beauty. Other impressive performance feats showcased the XA-38's ability
to take-off and land in shorter distances at low speed than even her
contemporary single-engined brethren. Her powerplants and airframe
undoubtedly proved reliable in subsequent evaluations.
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A maximum speed of 376 miles-per-hour was recorded along with a service
ceiling topping 27,800 feet with twin Wright 2,700 horsepower engines
and a crew of two. |
Comparatively, the A-20 Havoc sported a top speed of 339 miles-per-hour with a service ceiling of 23,700 feet with twin Wright 1,700 horsepower engines and a crew of three.
The XA-38 would go down as a true American "what-might-have-been" story for a top straight-line speed coupled with a lethal armament package made for one successful aircraft in the Second World War. It is believed that the XA-38 would not have disappointed has it been ordered into production and been available in some number. As fate would have it, the system fell by the wayside as the B-29's took her engines, the need for dedicated attack craft dwindles and the war came to its inevitable close a year later.
Regardless, the XA-38 remains an interesting study. The XA-38 went under the name of "Destroyer" but was more popularly remembered as the "Grizzly". It is known that one of the XA-38 prototypes fell the way of the scrap yard while the whereabouts of the other prototype are unknown.
Specifications for the Beechcraft XA-38 Gizzly / Destroyer (Model 28)
Dimensions:
Length: 51.67ft (15.75m)
Width: 67.06ft (20.44m)
Height: 15.49ft (4.72m)
Performance:
Maximum Speed: 370mph (595kmh; 321kts)
Maximum Range: 1,625miles (2,615km)
Rate-of-Climb: 0ft/min (0m/min)
Service Ceiling: 28,999ft (8,839m; 5.5miles)
Armament Suite:
STANDARD:
1 x 75mm T15E1 cannon in nose
2 x 12.7mm Browning air-cooled heavy machine guns fixed in lower fuselage nose.
2 x 12.7mm Browning air-cooled heavy machine guns in remote-controlled dorsal turret.
2 x 12.7mm Browning air-cooled heavy machine guns in remote-controlled ventral turret.
OPTIONAL (up to 2,000lbs of external stores):
Conventional Drop Bombs
Fuel Droptanks
Smoke Screen Chemical Tanks
Torpedoes
Depth Charges
Structure:
Accommodation: 2
Hardpoints: 2
Empty Weight:22,481lbs (10,197kg)
Maximum Take-Off Weight:36,330lbs (16,479kg)
Powerplant:
Engine(s): 2 x Wright GR-3350-43 Cyclone radial piston engines of 2,300 horsepower each.