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Curtiss A-12 (Shrike)

Single-Engine, Twin_Seat Strike Aircraft

Curtiss A-12 (Shrike)

Single-Engine, Twin_Seat Strike Aircraft


The Curtiss A-12 Shrike was never used in combat and led a short production life.
National Flag Graphic
ORIGIN: United States
YEAR: 1933
STATUS: Retired, Out-of-Service
MANUFACTURER(S): Curtiss Aeroplane and Motor Company - USA
OPERATORS: China; United States

Unless otherwise noted the presented statistics below pertain to the Curtiss A-12 (Shrike) model. Common measurements, and their respective conversions, are shown when possible.
LENGTH: 32.25 feet (9.83 meters)
WIDTH: 44.00 feet (13.41 meters)
HEIGHT: 9.32 feet (2.84 meters)
WEIGHT (EMPTY): 3,898 pounds (1,768 kilograms)
WEIGHT (MTOW): 5,756 pounds (2,611 kilograms)
ENGINE: 1 x Wright R-1820-21 Cyclone radial piston engine of 690 horsepower.
SPEED (MAX): 177 miles-per-hour (285 kilometers-per-hour; 154 knots)
RANGE: 521 miles (838 kilometers; 452 nautical miles)
CEILING: 15,157 feet (4,620 meters; 2.87 miles)


4 x .30 caliber machine guns in fixed-forward positions.
1 x .30 caliber machine gun in rear flexible mounting.

4 x 122lb bombs
10 x 30lb fragmentation bombs
1 x 52 gallon external fuel droptank

Series Model Variants
• A-8 - Inline Piston Engine Production Model
• YA-10 - Experimental Platform to test feasability of radial piston engine in the Curtiss A-8 model (then using an inline engine); converted from the Curtiss A-8; Pratt & Whitney air-cooled engine.
• Model 60 - Curtiss Company Designation
• A-12 - Production Designation; 46 examples produced; 20 exported to China with Wright SR-1820F-52 radial engines of 775 horsepower.


Detailing the development and operational history of the Curtiss A-12 (Shrike) Single-Engine, Twin_Seat Strike Aircraft.  Entry last updated on 5/19/2018. Authored by Staff Writer. Content ©
The A-12 was an inter-war product of the Curtiss Aeroplane and Motor Company first appearing in 1933. The type became the first quantitative monoplane aircraft in service with the United States Army Air Corps upon its inception. Only 46 production examples of the Shrike appeared and several of these were present at the Japanese attack on Pearl Harbor. Its 1930s-era design philosophy quickly made it obsolete with many in the product line being grounded or relegated to training units after the attack. Many fell to the scrapyard after their effective use.

Origins of the A-12 lay in the original A-8 Curtiss production model. The A-8 was the result of a 1920's US Army requirement to replace the Curtiss A-3 Falcon biplane. Atlantic-Fokker Company (General Aviation) and Curtiss both submitted low-wing monoplane designs (known as XA-7 and XA-8 respectively) of all-metal construction and fitting the Curtiss V-1570 Conqueror V-12 liquid-cooled inline piston engine. After an evaluation period, the Curtiss submission was chosen over the Atlantic-Fokker design. Several test aircraft were ordered under the YA-8 designation and eventual production aircraft became the A-8.

The first YA-8 was set aside and reused in a feasibility test in which a air-cooled radial engine was installed in place of the liquid-cooled inline. By the early 1930;s, the US Army Air Corps had developed a belief that air-cooled engines should be made the norm on all of their future aircraft products. Their reasons lay in the vulnerability of liquid-cooled engines when exposed to enemy ground fire as a single random hit could very well render such an engine, associated aircraft and its pilot inoperable. Another school of thought placed the operational costs and level of maintenance in favor of air-cooled engine types over that of inline-engine types. These two reasons led to the selection of a Pratt & Whitney powerplant as the engine of choice to replace the original Curtiss-based Conqueror.

With the new engine in place, the YA-8 was now redesignated as the YA-10 to signify the conversion. The conversion itself was accomplished by September of 1932 and the completed aircraft yielded comparable performance statistics to the original A-8 platform. All remaining A-8B's on order (some 46 total) with their Conqueror liquid-cooled engines were now changed to include the replacement Pratt & Whitney radial powerplant. The new production designation of A-12 was then assigned to mark these models. Though often designated with the "Shrike" name, the aircraft was formally known simply as the "A-12" in USAAC nomenclature. Shrike was an official Curtiss company name assigned to its A-12 product.

Externally, the A-12 retained much of the A-8's features. The chief difference between the two became the obvious inclusion of the air-cooled radial piston engine over that of the liquid-cooled inline. The two cockpits were also brought closer together to facilitate better communication between the pilot - situated in the forward open-air cockpit - and the gunner/observer in the rear position. An antenna structure rose high atop the fuselage, above and between the two cockpit positions. The pilot sat behind angled windscreens in a very utilitarian cockpit, complete a forward instrument panel and open sides revealing wiring, cables and piping. The continuous cockpit was housed over behind the pilots head and continued up until the rear gunners position. The rear gunner also sat in an open air cockpit but his position featured some glazing to help conform the fuselage to better aerodynamic principles. The fuselage itself was of a smooth tubular design and was made up of all-metal construction. A distinct characteristic of the A-12 was its fixed undercarriage with excessively faired-over main landing gears - one positioned under each wing - and a simple conventional tail wheel at rear. Wings were low-mounted monoplane assemblies with noticeable cable bracing and struts with slight dihedral. Wings were also of all-metal construction though the ailerons were covered over in fabric. The Wright R-1820-21 Cyclone radial piston engine of 690 horsepower powered a three-bladed propeller system and was fitted in the extreme forward of the fuselage, ahead of the pilots windscreen. The empennage was of a conventional arrangement with a single vertical tail fin and horizontal planes. Tail surfaces were also of all-metal construction but the rudder and elevator components were covered over in fabric.

Curtiss A-12 (Shrike) (Cont'd)

Single-Engine, Twin_Seat Strike Aircraft

Curtiss A-12 (Shrike) (Cont'd)

Single-Engine, Twin_Seat Strike Aircraft

Standard armament for the A-12 Shrike included a battery of 4 x .30 caliber machine guns in a fixed forward-firing set up with two guns fitted into each landing gear spat (600 rounds of .30 caliber ammunition allotted to each gun). A C-4 gunsight was afforded the pilot. The rear gunner had access to a .30 caliber machine gun on a flexible mounting to protect the aircraft's "six". Aside from the machine gun armament, the A-12 was cleared for light bombing duty and could field up to four 122lb conventional drop bombs under the wings. In place of these munitions, the Shrike could also utilize up to 10 x 30lb fragmentation bombs or flares for marking targets at night. A 52-gallon external fuel tank could be used in place of the bombs and could be jettisoned when empty. Interestingly enough, the main fuel tank aboard the A-12's fuselage could also be jettisoned via a hand crank.

The A-12 was delivered to the USAAC in 1933. Initial examples became a single production model and two service test aircraft. A-12's eventually made up the mount of choice for the 3rd Attack Group and 37th Attack Squadron of the 8th Pursuit Group. The aircraft was eventually shipped off the mainland and ended up in Hawaii via Wheeler Field and then later at Hickam Field. Incidentally, Hickam Field itself was named after Lieutenant Horace Meek Hickam whom died while attempting to land his A-12 Shrike at Fort Crockett in Texas.

Some A-12's underwent further periods of notable development. One such conversion involved the addition of ski-like implements in place of the landing gear fairings to make the A-12 more "bad-weather friendly". Not only did this allow the Shrike to operate from icy or snowbound airstrips, it provided for viable landings and take-off operations from dirt, grass and paved-over runways as well. Another such development involved adding inflatable air bladders to the sides of the fuselage. Should the crew and aircraft be forced into an emergency landing over water, the air bladders could be filled to allow the A-12 to stay above water until help arrived. Needless to say, these implements were never put into production A-12s.

Operationally, the A-12 was never used in anger by American forces. Though present at the attack on Pearl Harbor, the aircraft never went airborne in defense of the island and the type was dropped from service soon afterwards. A-12's maintained a limited capacity as reconnaissance platforms as well and could be modified for the role through the use of onboard cameras. Beyond that, the A-12 was already obsolete by the arrival of World War 2.

At least 20 export versions of the A-12 were sold to China in 1936. These A-12's sported a more powerful version of the air-cooled engine in the Wright SR-1820F-52 of 775 horsepower supplying a better maximum speed of 182 miles-per-hour. These Shrikes were soon pressed into service with Chinese forces against the Japanese to which the A-12's were wholly outclassed with few surviving if any.


Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

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Relative Maximum Speed Rating
Hi: 200mph
Lo: 100mph
    This entry's maximum listed speed (177mph).

    Graph average of 150 miles-per-hour.
City-to-City Ranges
Graph showcases the Curtiss A-12 (Shrike)'s operational range (on internal fuel) when compared to distances between major cities.
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Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units

  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.

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Supported Arsenal
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