Breda Ba.27 Metallico
Designed by Cesare Pallavicino, the unsatisfactory characteristics of the Breda 27 low-wing braced monoplane fighter prototypes led, in late 1933, to the complete redesign of the fighter by engineers Parano and Panzeri, and the construction of a further prototype. The first prototype, MM.216, powered by a 530 hp Alfa Romeo Mercury VI, originally was fitted with a 2-blade prop, later replaced by 3-blade metal prop.
The fuselage was of welded steel tube with corrugated light alloy skinning and the wing was of wood. Proposed armament comprised two 12.7mm synchronised machine guns.
Two prototypes were built, flight testing commencing early 1933, and the second prototype, MM.217, flying from Milan to Rome-Montecelio on 10 July of that year in 90 min at an average speed of 334km/h. The second prototype differed from the first in several respects, additional bracing struts being introduced between the wing and fuselage, and struts added to increase the rigidity of the tailplane. The tailplane enlarged compared with MM.216.
The characteristics were generally unsatisfactory, the poor view from the cockpit being the subject of particular criticism, and, Ing Pallavicino having meanwhile left Breda, a total redesign of the fighter was undertaken by engineers Parano and Panzeri as the Breda 27 Metallico, in late 1933, and the construction of a further prototype.
Unlike preceding Breda 27s, the new prototype (I-BAWA / MM.218) was entirely of metal construction, the wing being of steel and duralumin with duralumin skinning, and the corrugated skinning of the fuselage gave place to a smooth duralumin covering. Criticism of forward view for take-off and landing was answered by moving the cockpit bodily forward and raising it by deepening the fuselage. The 540hp Alfa Romeo-built Mercury IVA engine was retained, but the two-bladed wooden propeller gave place to a three-bladed metal propeller. The new prototype was flown in June 1934, and in September of that year it was ferried from Milan to Oslo (for demonstration to the Norwegian air arm) at an average speed of 283km/h, being exhibited at the Salon de l'Aeronautique in Paris in November.
The fifth example was purchased by Italy's Ministero dell'Aeronautica.
Similar to the redesigned third prototype, the series version was designated Breda 27 Metallico (signifying that it was of all-metal construction) and 18 were ordered by China. In the event only 11 were delivered (in 1936), these being assigned to the 29th Pursuit Sqn at Canton. An armament of two 12.7mm machine guns was carried.
The prototype was obtained by the Regia Aeronautica, serving with the 86a Squadriglia, 5° Stormo Assalto, until December 1937.
Breda 27 Metallico