Savoia-Pomilio SP.4

SP.4
Role	Reconnaissance and bomber aircraft
National origin	Italy
Manufacturer	AER
Designer	Umberto Savoia and Ottorino Pomilio
First flight	1917
Number built	ca. 150
Developed from	Savoia-Pomilio SP.1

The Savoia-Pomilio SP.4 was a reconnaissance and bomber aircraft built in Italy during the First World War.[1] It was a further development of the family of designs that had started with the SP.1. Ultimately all of these took their basic configuration from the Farman MF.11: a biplane with twin tails and a fuselage nacelle that accommodated the crew and a pusher-mounted engine.[2] However, the SP.4 differed both from its Farman antecedent and the previous Savoia-Pomilio designs by featuring twin engines mounted in the interplane gap in place of the single engine in the nacelle.[2] Removing the engine from this position allowed a second machine gun to be placed there instead.[2]

Apart from their intended role as a reconnaissance aircraft and bomber, some SP.4s were used to insert spies and saboteurs behind enemy lines.[3] A further development designated SP.5 remained unbuilt by the end of the war.[4]

Operators

 Kingdom of Italy

• Corpo Aeronautico Militare

Specifications

Data from "Savoja-Pomilio S.p.4"

General characteristics

• Crew: Two, pilot and observer
• Length: 10.70 m (35 ft 1 in)
• Wingspan: 19.80 m (65 ft 0 in)
• Wing area: 78 m^2 (839 sq ft)
• Gross weight: 2,300 kg (5,060 lb)
• Powerplant: 2 × Isotta-Fraschini V.4B , 110 kW (150 hp) each

Performance

• Maximum speed: 150 km/h (94 mph, 82 kn)

Armament

• 2 × machine guns

Notes

1. Taylor 1989, p.793
2. The Illustrated Encyclopedia of Aircraft p.2897
3. The Illustrated Encyclopedia of Aircraft p.2898
4. "Savoja-Pomilio S.p.4"

References

• The Illustrated Encyclopedia of Aircraft. London: Aerospace Publishing.
• "Savoja-Pomilio S.p.4". Aerei Italiani. Retrieved 2009-03-04.
• Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions.