Breda-Zappata BZ.308

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B.Z.308
Breda-Zappata BZ.308.jpg
Role Four-engined airliner
Manufacturer Breda
Designer Filippo Zappata
First flight 1948
Introduction 1949
Primary user Italian Air Force
Number built 1
Breda-Zappata BZ.308 front quarter view.jpg
Breda-Zappata BZ.308 side view.jpg

The Breda-Zappata B.Z.308 was an Italian four-engined airliner produced by Breda.

Design and development[edit]

The aircraft designer Filippo Zappata developed a four-engined civil transport for operation over both European and transatlantic routes. Construction of the Breda-Zappata B.Z.308 was started during 1946 at Breda's Sesto San Giovanni works. The allied control commission halted the work, which was not resumed until January 1947. Further delays in the delivery of Bristol Centaurus engines delayed the first flight, which was on 27 August 1948, piloted by Mario Stoppani.

The B.Z.308 was a large low-wing monoplane of all-metal construction, the fuselage had an oval cross-section. It had a large tailplane with endplate fins and rudders, retractable landing gear. Powered by four Bristol Centaurus radial engines driving five-bladed propellers. It was designed for a flightcrew of five, and 55 passengers in two cabins, a high-density model was planned with seats for 80. Although flight testing went well, financial problems and the realisation that competition from American-built airliners would take a major share of the post-war airliner market, along with the pressures to close down the Aeronautical section of the Breda industries as requested by the Marshall plan, led to the project being abandoned. Breda stopped producing airplanes subsequently.

Operational history[edit]

The prototype B.Z.308 was acquired by the Italian Air Force in 1949 as a transport aircraft.
Despite orders in 1950 from India, Argentina and Persia, only the prototype was built, allegedly also due to pressure from the allies for Italy to refrain from competing in civilian aircraft manufacture after the war.
On 27 August 1948 the Bz 308 made its maiden flight, in front of civil and military authorities, politicians and the Italian President.
The prototype, which passed to the Italian Air Force in 1950 and was used to fly between Rome and Mogadishu until one day, following damage during a poor landing, it was abandoned in a field in Somalia before being broken up in 1954. It was also the first Italian transatlantic aircraft, and the first aircraft to fly into the new Malpensa airport in 1948.
The aircraft is also clearly visible in the airport scene of the film Roman Holiday.

Specifications (B.Z.308)[edit]

Data from Jane's All The World's Aircraft 1951–52[1]

General characteristics

  • Crew: 5 (two pilots, flight engineer, navigator and radio operator)
  • Capacity: 54 passengers
  • Length: 33.52 m (110 ft 0 in)
  • Wingspan: 42.1 m (138 ft 1 in)
  • Height: 7.15 m (23 ft 5 in)
  • Wing area: 208 m2 (2,240 sq ft)
  • Aspect ratio: 8.55:1
  • Empty weight: 27,500 kg (60,627 lb)
  • Max takeoff weight: 46,500 kg (102,515 lb)
  • Fuel capacity: 18,000 L (4,800 US gal; 4,000 imp gal)
  • Powerplant: 4 × Bristol Centaurus 568 18-cylinder air-cooled radial engines, 1,900 kW (2,500 hp) each

Performance

  • Maximum speed: 573 km/h (356 mph; 309 kn)
  • Cruising speed: 441 km/h (274 mph; 238 kn) at 4,300 m (14,100 ft)
  • Stall speed: 135 km/h (84 mph; 73 kn)
  • Range: 7,700 km (4,785 mi; 4,158 nmi)
  • Service ceiling: 8,000 m (26,247 ft)

References[edit]

  1. ^ Bridgman 1951, p. 153c.
  • Bridgman, Leonard (1951). Jane's All The World's Aircraft 1951–52. London: Sampson Low, Marston & Company, Ltd. 
  • The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing. 

External links[edit]

[For an artist's impression see http://wp.scn.ru/en/ww3/t/1079/60/0/1]
[For a photograph see http://www.aerei-italiani.net/Sfondi/Sfondo_13.jpg]
[For an Italian site detailing the history of the BZ.308, see: http://www.url.it/muvi/mostre/08mostra/mostrasx.htm]