I.Ae.31 Colibri (oz16169)

About this Plan

I.Ae.31 Colibri. Free flight scale model for rubber power. Wingspan 16 in.

Direct submission to Outerzone.

Quote: "Two-seat school monoplane for tourism and acrobatics, designed at the Aerotechnical Institute and built at the H. Goberna Workshops in Alto Alberdi, Córdoba. Three prototypes were made; the first was tail-heavy, a deficiency that was corrected in the following two by shifting the center of gravity. It made its first flight on September 18, 1947.

Powerplant: BLACKBURN CIRRUS-MAJOR 3, producing 150 HP at 2,450 rpm, but it could also be fitted with a DE HAVILLAND GIPSYMAJOR 10, producing 145 HP at 2,550 rpm; both were inverted, air-cooled, four-cylinder inline engines driving a two-bladed, manually variable-pitch DE HAVILLAND propeller with a fuel capacity of 135 l.

NACA-23012 profile cantilever wings and twin-wing wings, built entirely of domestic wood, mainly cedar and araucaria, with domestic plywood covering and coated aircraft canvas; a single-piece wing bolted at four points to the fuselage (made of chrome-molybdenum steel tubes).

The lower fuselage cowling was covered with duralumin panels, while the rest was covered with fabric; a cantilever monoplane tail unit; fixed and independent landing gear with oleo-pneumatic shock absorbers and a steerable tailwheel; mechanically actuated brakes; a cockpit with tandem seats and dual controls; an acrylic roof that could be folded to the right."

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