Curtiss A-12 Shrike

Le Curtiss A-12 Shrike sur Wikipedia de langue anglaise

[Vous devez être inscrit et connecté pour voir ce lien]

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The Curtiss A-12 Shrike was the United States Army Air Corps' second monoplane ground-attack aircraft, and its main attack aircraft through most of the 1930s.

It was based on the A-8, but had a radial engine instead of the A-8's inline, water-cooled engine, as well as other changes.

Design and development

The Model 60 was developed from advancements of the A-8 and the experimental YA-10.

However, it became obsolete after a short use period, mainly because of fast-improving aviation technology, as well as the USAAC's desire for multi-engined attack aircraft.

he most obvious difference between the A-12 and the A-8 is the air-cooled, radial engine in the A-12, which replaced the A-8's inline, water-cooled engine.

This was a response to the USAAC's move toward a preference for radial engines, especially in attack aircraft.

The rationale behind this preference is that the radial engine has a lower profile, making it less vulnerable to ground fire, and a simpler cooling mechanism, which is also less prone to groundfire, as well as overall maintenance problems.

These aircraft retained the open cockpit introduced in the A-8 production batch, and carried the same weapons load. In an attempt to improve pilot/observer co-operation the rear cockpit was moved forward sufficiently for its glazed covering to form a continuation of the fuselage decking behind the pilot's cockpit.

Nine USAAF A-12s were still in service at Hickam Field on 7 December 1941, but they saw no combat.

Operational history

A-12s served with the 3rd Attack Group plus the 8th and 18th Pursuit Groups.

Surviving Shrikes were grounded just after Pearl Harbor was bombed in December 1941.

Operators

Republic of China

Chinese Nationalist Air Force received 20 A-12 Shrikes in 1936, arming the 27th and the 28th Squadron of the 9th Group. When full-scale war broke out between Japan and China, they were used.
The initial success including the downing of four Japanese Aichi D1A1 carrier-based dive bombers on 15 August 1937.
However, after deploying in ground support missions in Shanxi, most did not survive and the extremely few left were reassigned to training duties.

United States

United States Army Air Corps

Specifications (A-12 Shrike)

Data from The Complete Encyclopedia of World Aircraft

General characteristics

Crew: 2

Length: 32 ft 3 in (9.83 m)

Wingspan: 44 ft 0 in (13.41 m)

Height: 9 ft 4 in (2.84 m)

Wing area: 284 ft² (26.38 m²)

Empty weight: 3,898 lb (1,768 kg)

Max. takeoff weight: 5,756 lb (2,611 kg)

Powerplant: 1 × Wright R-1820 "Cyclone" 9-cylinder air-cooled radial engine, 690 hp (515 kW)

Performance

Maximum speed: 177 mph (154 knots, 285 km/h)

Range: 521 mi (453 nmi, 838 km)

Service ceiling: 15,150 ft (4,620 m)

Armament


Guns:

4 × forward-firing .30 in (7.62 mm) machine guns
1 × aft-firing .30 in (7.62 mm) machine gun

Bombs:

4 × 122 lb (55 kg) bombs on underwing racks or 10 × 30 lb (13.6 kg) fragmentation bombs in chutes on either side of the main fuel tank