SIA 7
{{Infobox aircraft
|name = SIA 7
|image =S.I.A._7B.jpg
|caption = S.I.A. 7B
|type = Reconnaissance-bomber
|national_origin =Italy
|manufacturer = Società Italiana Aviazione
|designer = Torretta and Carlo Maurilio Lerici
|first_flight =Summer 1917
|introduction =1917
|retired =
|status =
|primary_user = Corpo Aeronautico Militare
|more_users = American Expeditionary Force
|developed_from =
|variants =
}}
The SIA 7B was a biplane reconnaissance-bomber built by the Società Italiana Aviazione and served with the Italian Corpo Aeronautico Militare and American Expeditionary Force in 1917.
Development
The engineers, Torretta and Carlo Maurilio Lerici of the Fiat company, designed the airplane as a "Jack of all trades", its speed, climbing power, and carrying capacity enabled it to be used as a bomber and racer.Taylor, 2001, Page 207 It was built in the workshops of the Societa Italiano Aviazione, a sister company to the famous motor-car firm F.I.A.T. of Turin.Taylor, 2001, Page 207 It used the standard Italian structural feature of a plywood-covered fuselage.Swanborough & Bowers, 1964, page 559.
The SIA.7B was accepted for the Italian Air Force in November 1917 and entered mass production. There were however revealed its shortcomings, like low wing structure durability and poor view. Next variant SIA.7B2, developed in December 1917, had strengthened wings, slightly raised cockpits and stronger engine. Another variant, built in February 1918, was the SIA 9 with stronger 700 hp engine. There were built 501 SIA.7B, 71 SIA.7B2 and 62 SIA.9B.[http://www.airwar.ru/enc/other1/sia7.html SIA.7(9) at Ugolok Neba] {{in lang|ru}}
Operational history
The SIA.7 family aircraft were used for reconnaissance and bombing raids on Austro-Italian front. The SIA.7B2 entered service in March 1918. The SIA.9 managed to take part in World War I service as well. Because of unsatisfactory durability, from July 1918 SIA.7B and 7В2 were moved to training units.
In 1917, the Italian government sent a pair of SIA 7B-1 aircraft to the United States for evaluation under a plan to mass-produce established European designs. The 7B-1 was not put into production in the US but 19 were bought in Italy for use by A.E.F. units sent there.
Variants
;SIA 7B1: main reconnaissance-bomber variant
;SIA 7B2: improved reconnaissance-bomber variant
;SIA R2: scout-bomber built in 1918, span 12.32 m (40 ft 5 in), length 8.75 M (28 ft 8 in), height 3.3 m (120 ft 10 in), speed 180 km/h (111.8 mph)Taylor, 2001, Page 207
;SIA 9B: two-seat reconnaissance-bomber 700 hp (522 kW) Fiat A.14 engineTaylor, 2001, Page 207
Operators
;{{flag|Kingdom of Italy}}
;{{flag|United States|1912}}
- American Expeditionary Forces received 19 7B-1 in February 1917, used at Foggia, Italy.Fahey, 1946, page 12
Specifications (7B)
{{Aircraft specs
|ref=Jane's Fighting Aircraft of World War I {{cite book |title=Jane's Fighting Aircraft of World War I |first=W. E. De. B. |last=Whittaker |contribution=forward |contributor=John W.R. Taylor |date=1990 |publisher=Military Press |location=New York, N.Y. |isbn=978-0517033760 |page=207}}
|prime units?=met
|crew=2
|length m=8.75
|length note=
|span m=12.32
|span note=
|height m=3.3
|height note=
|wing area sqm=45.6
|wing area note=
|aspect ratio=
|airfoil=
|empty weight kg=
|gross weight kg=1670
|gross weight note=
|max takeoff weight kg=
|max takeoff weight note=
|fuel capacity={{cvt|215|kg|0}} ({{cvt|307|L|USgal impgal}} at Specific Gravity of 0.7)
|more general=
|eng1 number=1
|eng1 name= Fiat A.12bis
|eng1 type=6-cylinder water-cooled in-line piston engine
|eng1 hp=300
|eng1 note=
|prop blade number=2
|prop name=fixed-pitch wooden propeller
|prop dia m=2.8
|prop dia note={{cvt|1.85|m|0}} pitch at 1,500 rpm
|max speed kmh=180
|max speed note=at {{cvt|200|m}}
::::{{cvt|165|km/h|mph kn}} at {{cvt|2000|m}}
- Landing speed: {{cvt|75|km/h|mph kn}}
|cruise speed kmh=
|cruise speed note=
|stall speed kmh=
|stall speed note=
|never exceed speed kmh=
|never exceed speed note=
|range km=
|range note=
|combat range km=
|combat range note=
|ferry range km=
|ferry range note=
|ceiling m=
|ceiling note=
|g limits=
|roll rate=
|climb rate ftmin=244
|climb rate note=
|time to altitude=
::::{{cvt|1000|m}} in 6 minutes
::::{{cvt|2000|m}} in 14 minutes
::::{{cvt|3000|m}} in 23 minutes
::::{{cvt|4000|m}} in 38 minutes
|wing loading kg/m2=36.7
|wing loading note=
|fuel consumption kg/km=
|power/mass={{cvt|0.134|kW/kg}}
|more performance=
|guns= 1x {{cvt|6.5|mm|3}} Fiat–Revelli Modello 1914 machine gun on a flexible mount in the rear cockpit
}}
See also
References
{{Reflist}}
Further reading
- {{cite book |last1=Swanborough |first1=F.G. |last2=Bowers |first2=P.M. |title=United States Military Aircraft Since 1908 |date=1971 |publisher=Putnams |isbn=0370000943 |page=618 |edition=revised}}
- {{cite book |last1=Fahey |first1=James |title=U.S. Army Aircraft 1908-1946 |date=1946 |publisher=Ships & Aircraft |location=Fall Church, VA |edition=1st}}
External links
{{commons category|SIA 7}}
- [http://www.airwar.ru/enc/other1/sia7.html SIA.7(9) at Ugolok Neba] {{in lang|ru}}
{{Portal bar|Italy|Companies|Aviation}}
Category:1910s Italian military reconnaissance aircraft