Aerfer Sagittario 2

Sagittario 2
Sagittario 2
	Sagittario 2 MM560 in Italian Air Force markings at the 1957 Paris Air Salon
General information
Type	Prototype fighter
Manufacturer	Aerfer
Primary user	Italian Air Force
Number built	2
History
First flight	19 May 1956
Developed from	Ambrosini Sagittario
Developed into	Aerfer Ariete

The Aerfer Sagittario 2 (Italian for sagittarius) was a prototype all-metal single-seat lightweight fighter aircraft built in Italy by Aerfer, intended to serve as an interceptor or light tactical support aircraft. First flown in 1956, it became the first Italian aircraft to break the sound barrier in controlled flight when it reached Mach 1.1 during a dive from 13,725 m (45,000 ft).

Design and development

The Sagittario 2 was based on the earlier Sagittario, which was itself a development of the S.7 piston-engined training aircraft that went into service with the Italian Air Force in small numbers.

A small all-metal aircraft, the Sagittario 2 had its jet engine mounted in the nose, with the exhaust underneath the mid-fuselage. The wing and tail surfaces were highly-swept. The cockpit was moved forward of its position on the Sagittario's predecessors, and equipped with a bubble canopy. A tricycle undercarriage was fitted, with the nose gear retracting under the engine.

Development continued as the Ariete.

Operators

Italy

Italian Air Force operated two aircraft for evaluation test^[1]

Specifications (Sagittario 2)

The Hispano-Suiza HSS 825 autocannons as mounted in the Sagittario 2.

Data from Jane's All the World's Aircraft 1958-59^[2]

General characteristics

Crew: 1
Length: 9.50 m (31 ft 2 in)
Wingspan: 7.50 m (24 ft 7 in)
Height: 2.02 m (6 ft 8 in)
Wing area: 14.73 m² (158.6 sq ft)
Aspect ratio: 3.82
Airfoil: root: laminar symmetric 8.5% thick, tip: laminar symmetric 9.30% thick^{[citation needed]}
Empty weight: 2,300 kg (5,071 lb) ^{[citation needed]}
Gross weight: 3,293 kg (7,260 lb)
Fuel capacity: 1,200 L (320 US gal; 260 imp gal) in four fuselage tanks
Powerplant: 1 × Rolls-Royce Derwent 9 centrifugal-flow turbojet, 16 kN (3,600 lbf) thrust

Performance

Maximum speed: 1,006 km/h (625 mph, 543 kn)
Range: 765 km (475 mi, 413 nmi) ^{[citation needed]}
Service ceiling: 14,000 m (46,000 ft)
Rate of climb: 42 m/s (8,300 ft/min)
Time to altitude: 12,000 m (39,000 ft) in 10 minutes
Wing loading: 227 kg/m² (46 lb/sq ft)
Thrust/weight: 0.49

Armament

Guns: 2 × 30 mm (1.181 in) Hispano-Suiza HSS 825 [sv] L/70 cannon with 300 rounds per gun^[3]
Hardpoints: 2 with a capacity of 318 kg (701 lb), with provisions to carry combinations of:
- Bombs: 2 × 227 kg (500 lb) bombs or 2 × 318 kg (701 lb) napalm tanks
- Other: 2 × machine guns or cannon
Rockets: 12 × 7.62 cm (3 in) rockets

References

^ "Aerfer Sagittario II". Aeronautica Militare. Retrieved 3 June 2019.
^ Bridgman, Leonard, ed. (1958). Jane's All the World's Aircraft 1958-59. London: Jane's All the World's Aircraft Publishing Co. Ltd. p. 187.
^ "I Caccia Supersonici Italiani, I Gioielli Di Sergio Sefanutti". Archived from the original on 2021-06-13. Retrieved 2021-06-13.

Bibliography

The Aeroplane, December 21, 1956, p. 924
Buttler, Tony. X-Planes of Europe II: Military Prototype Aircraft from the Golden Age 1946–1974. Manchester, UK: Hikoki Publications, 2015. ISBN 978-1-90210-948-0
Giuseppe Ciampaglia, Dal SAI Ambrosini Sagittario all'AERFER Leone, January 2004, IBN editore, with English translation by Stephen Richards

[1] "Aerfer Sagittario II". Aeronautica Militare. Retrieved 3 June 2019.

[JAWA58-59-2] Bridgman, Leonard, ed. (1958). Jane's All the World's Aircraft 1958-59. London: Jane's All the World's Aircraft Publishing Co. Ltd. p. 187.

[3] "I Caccia Supersonici Italiani, I Gioielli Di Sergio Sefanutti". Archived from the original on 2021-06-13. Retrieved 2021-06-13.

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