The Caproni PS.1, also known as the Pallavicino PS-1 and Caproni Ca.303, was an Italian four-seater sportsplane, designed and built specifically to compete in Challenge 1934, the European touring plane championships.

Design and development

The PS.1 was designed by Cesare Pallavicino, the former designer of

Breda Breda ( , , , ) is a List of cities in the Netherlands by province, city and List of municipalities of the Netherlands, municipality in the southern part of the Netherlands, located in the Provinces of the Netherlands, province of North Brabant. ...

, after he had moved in 1933 to

Caproni Caproni, also known as ''Società de Agostini e Caproni'' and ''Società Caproni e Comitti'', was an Italian aircraft manufacturer. Its main base of operations was at Taliedo, near Linate Airport, on the outskirts of Milan. Founded by Giova ...

. Only two

prototype A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design, electronics, and Software prototyping, software programming. A prototype ...

s of the PS.1 were built, given registrations I-FRAN and I-MELO.

Description

The Caproni PS.1 was a four-seat cabin aircraft of metal construction, with

cantilever A cantilever is a rigid structural element that extends horizontally and is unsupported at one end. Typically it extends from a flat vertical surface such as a wall, to which it must be firmly attached. Like other structural elements, a cantilev ...

monoplane A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple wings. A monoplane has inherently the highest efficiency and lowest drag of any wing con ...

low wings. The steel-framed

fuselage The fuselage (; from the French language, French ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds Aircrew, crew, passengers, or cargo. In single-engine aircraft, it will usually contain an Aircraft engine, engine as wel ...

was covered with fabric as were the single-sparred trapezoidal planform foldable wings of steel construction which had rounded tips. The cabin had two side-by-side seats in front with dual controls, and two seats in the rear, under a common multi-part

canopy Canopy may refer to: Plants * Canopy (biology), aboveground portion of plant community or crop (including forests) * Canopy (grape), aboveground portion of grapes Religion and ceremonies * Baldachin or canopy of state, typically placed over an a ...

. A retractable

conventional landing gear Conventional landing gear, or tailwheel-type landing gear, is an aircraft Landing gear, undercarriage consisting of two main wheels forward of the Center of gravity of an aircraft, center of gravity and a small wheel or skid to support the tail ...

with a rear skid was fitted with the mainwheels protruding from the wing's lower surface when retracted. The radial engine was fitted to the fuselage nose, enclosed by a

cowling A cowling (or cowl) is the removable covering of a vehicle's engine, most often found on automobiles, motorcycles, airplanes, and on outboard boat motors. On airplanes, cowlings are used to reduce drag and to cool the engine. On boats, cowlings ...

, driving a two-bladed propeller. Fuel was housed in a 160-litre fuel tank.

Operational history

Both aircraft took part in the Challenge 1934 contest, flown by Armando François and Ugo Vincenzi. In a technical evaluation, the PS-1 took second place behind the Messerschmitt Bf 108 (the PS-1 and Bf 108 were the only Challenge aircraft with retractable

landing gear Landing gear is the undercarriage of an aircraft or spacecraft that is used for taxiing, takeoff or landing. For aircraft, it is generally needed for all three of these. It was also formerly called ''alighting gear'' by some manufacturers, s ...

). The aircraft were completed only shortly before the contest, so their pilots had little time for training. During a short landing trial, Vincenzi damaged his

engine An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power ge ...

and

propeller A propeller (often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working flu ...

, and he had to withdraw. Armando François completed the contest in 18th place (for 34 starting and 19 finishing crews).Krzyżan, M. (1988), p. 288 The second PS.1, I-MELO, was rebuilt in the late 1930s and redesignated Caproni Ca.166, given the registration I-ALGU.

Specifications (PS.1)

Notes

References