Engineering:SIAI-Marchetti S.205

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S.205
S-208M (53080480317).jpg
S.208M of the Italian Air Force
Role Liaison and glider-towing aircraft
Manufacturer SIAI-Marchetti
Designer Alexander Brena
First flight 1965
Status Out of production In service
Primary users Italian Air Force
Tunisian Air Force
Produced 1966-1980
Number built approximately 620 S.205s and 120 S.208s
Variants SIAI-Marchetti S.210

The SIAI-Marchetti S.205 is an Italian four-seat, single-engine, light airplane, manufactured by SIAI-Marchetti. The S.205 made its maiden flight in 1965. The Italian Air Force employs a version called S.208.

Development

The S.205 was the brainchild of the SIAI-Marchetti head designer Alexander Brena in 1964. Brena wanted to make a light, general-purpose aircraft, which led to the S.205. The aircraft was all-metal, low-winged, single-engined and provided space for four persons. Further development led into the S.208, which had a 260 hp engine, retractable landing gear, and 5 seats. Other planned, but never realized versions were the S.206 and S.210.[citation needed]

Approximately 65 fuselages were transported to the United States, to be assembled in Syracuse, New York by the Waco Aircraft Company. With the death of Mr. Berger, the president of the company, the assembly of the S.205 came to a halt[when?] in the US.[citation needed]

Operational history

The Italian Air Force acquired 45 aircraft for use as liaison, glider-towing, and training aircraft. The military version, called S.208M, differed from the civil version through its avionics, its two doors for the cockpit, the possibility to mount a hook to tow gliders, and the lack of some fuel tanks. The first 4 delivered aircraft were S.205s, but were later converted into S.208s.

Two aircraft were also sold to Tunisia, who used them for pilot training.[1]

Many S.205 aircraft were purchased by private pilot owners in Europe and elsewhere.

Variants

The prototype SIAI S.205 exhibited at the Paris Air Show in June 1965
S.205
basic version, metal, single-engine four-seat airplane, the F version had a fixed undercarriage, while the R version had a retractable undercarriage. It was offered with three different engines:
S.205 F/R-18: Avco Lycoming O-360
S.205 F/R-20: Avco Lycoming IO-360-A1A
S.205 F/R-22: Franklin 6A-350C1
S.206
6-seat version, never realized
S.208
5-seat version with a 260 hp engine and a retractable undercarriage
S.208M
military version for the Italian Air Force
S.208AG
agricultural version, also used as an aviation-ambulance.
S.210
twin-engine version.

Operators

Civil

The aircraft has been registered in some 27 countries in Europe, Africa, the Americas and Australia.[2]

Military

 Ethiopia
 Italy
 Tunisia

Specifications (S.205-20/R)

Data from Jane's All The World's Aircraft 1966–67,[5] Jane's All the World's Aircraft 1971–72[6]

General characteristics

  • Crew: 1
  • Capacity: 3 pax
  • Length: 8 m (26 ft 3 in)
  • Wingspan: 10.86 m (35 ft 8 in)
  • Height: 2.89 m (9 ft 6 in)
  • Wing area: 16.09 m2 (173.2 sq ft)
  • Aspect ratio: 7.04
  • Airfoil: root: NACA 632618; tip: NACA 632415[7]
  • Empty weight: 740 kg (1,631 lb)
  • Max takeoff weight: 1,300 kg (2,866 lb)
  • Fuel capacity: 215 L (57 US gal; 47 imp gal) in two wing tanks with optional 115.5 L (30.5 US gal; 25.4 imp gal) wing-tip tanks
  • Powerplant: 1 × Avco Lycoming IO-360-A1A 4-cylinder air-cooled horizontally-opposed piston engine, 150 kW (200 hp)
  • Propellers: 2-bladed Hartzell constant-speed propeller

Performance

  • Maximum speed: 280 km/h (170 mph, 150 kn) at sea level
  • Cruise speed: 255 km/h (158 mph, 138 kn) max
  • Stall speed: 84 km/h (52 mph, 45 kn) flaps and undercarriage down
  • Never exceed speed: 323 km/h (201 mph, 174 kn)
  • Range: 1,500 km (930 mi, 810 nmi) max. internal fuel + max. payload
  • Ferry range: 2,300 km (1,400 mi, 1,200 nmi) with tip-tanks
  • Service ceiling: 5,380 m (17,650 ft)
  • Rate of climb: 4.40 m/s; 870 ft/min
  • Wing loading: 80.8 kg/m2 (16.5 lb/sq ft)
  • Power/mass: 0.1148 kW/kg (0.0698 hp/lb)
  • Take-off run: 238 m (781 ft)
  • Take-off distance to 15 m (49 ft): 408 m (1,339 ft)
  • Landing run: 190 m (623 ft)
  • Landing distance from 15 m (49 ft): 470 m (1,542 ft)

See also

Related development

Aircraft of comparable role, configuration and era

References

  1. ↑ SIAI-Marchetti S 208
  2. ↑ "SIAI Marchetti S.205 and S.208". SIAI Marchetti aircraft. https://www.siai-marchetti.nl/s205.html. 
  3. ↑ "SIAI Marchetti S.205 and S.208". SIAI Marchetti aircraft. https://www.siai-marchetti.nl/s205.html. 
  4. ↑ "S.208M". Aeronautica Militare. http://www.aeronautica.difesa.it/mezzi/mlinea/Pagine/S208M.aspx. 
  5. ↑ Taylor, John W.R., ed (1966). Jane's All the World's Aircraft 1966–67. London: Sampson Low, Marston & Co. Ltd. pp. 100–101. 
  6. ↑ Taylor, John W.R., ed (1971). Jane's All the World's Aircraft 1971–72 (62nd ed.). London: Sampson Low, Marston & Company. pp. 130–131. ISBN 9780354000949. 
  7. ↑ Lednicer, David. "The Incomplete Guide to Airfoil Usage". https://m-selig.ae.illinois.edu/ads/aircraft.html. 



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