Farman F.170 Jabiru

The Farman F.170 Jabiru was a 1925 single-engine airliner evolved from the F.121 Jabiru, built by the Farman Aviation Works.

F.170 Jabiru
Role airliner
Manufacturer Farman
First flight 1925
Produced 1925-1929
Number built 18

Design and development

The F.170 Jabiru was a single-engine evolution of the 1923 F.3X/F.121. In the early 1920s, there was a strong prejudice in favour of single-engine airliners. Since even multi-engine aircraft could not keep flying in the likely event that an engine went out, it was considered that a single engine offered just as much security and a greater ease of maintenance.

The F.170 could carry up to 8 passengers and was an ungainly sesquiplane with a rectangular upper wing of constant profile. Its construction was of traditional wood and fabric. Since the aircraft was quite low on its wheels, it was often derisively called the ventre-à-terre (belly to the ground). The first flight took place in 1925.

The improved F.170bis, introduced in 1927, incorporated some metal construction and could carry 9 passengers. The F.171bis was joined by the one and only F.171.

Variants
F.170
An 8-passenger seaquiplane powered by a 370 kW (500 hp) Farman 12 We engine, 13 built.[1]
F.170bis
9-passenger airliner; an F.170 incorporating some metal construction, four built.[2]
F.171
A long-range derivative developed for a crossing of the North Atlantic, one built.[3]

Operational history

The F.170 and F.170bis were used exclusively by Société Générale des Transports Aériens (SGTA) from May 1926 and used on the Paris-Cologne-Berlin route. When the SGTA was incorporated in the newly created Air France airline on 7 October 1933, some five F.170 were still being used.

Operators
 France

Specifications (F.170)
Farman F.170 3 view drawing from NACA Aircraft Circular No.12

Data from Jane's all the World's Aircraft 1928[4], Histoire Mondiale des Avions de Ligne[5]. Aviafrance:Farman F-170[1]

General characteristics

  • Crew: 1
  • Capacity: 8
  • Length: 11.75 m (38 ft 7 in)
  • Wingspan: 16.1 m (52 ft 10 in)
  • Height: 3.2 m (10 ft 6 in)
  • Wing area: 52.5 m2 (565 sq ft)
  • Empty weight: 1,800 kg (3,968 lb)
  • Gross weight: 3,200 kg (7,055 lb)
  • Powerplant: 1 × Farman 12 We W-12 water-cooled piston engine, 370 kW (500 hp)
  • Propellers: 4-bladed wooden fixed-pitch propeller

Performance

  • Maximum speed: 220 km/h (140 mph, 120 kn)
  • Cruise speed: 180 km/h (110 mph, 97 kn)
  • Range: 500 km (310 mi, 270 nmi)
  • Service ceiling: 4,500 m (14,800 ft)
  • Time to altitude: 2,000 m (6,600 ft) in 15 minutes
  • Wing loading: 61 kg/m2 (12 lb/sq ft)
  • Power/mass: 0.1174 kW/kg (0.0714 hp/lb)
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References
  1. Parmentier, Bruno (30 May 1999). "Farman F-170" (in French). Paris. Retrieved 20 February 2018.
  2. Parmentier, Bruno (30 May 1999). "Farman F-170bis" (in French). Paris. Retrieved 20 February 2018.
  3. Parmentier, Bruno (30 May 1999). "Farman F-171" (in French). Paris. Retrieved 20 February 2018.
  4. Grey, C.G., ed. (1928). Jane's all the World's Aircraft 1928. London: Sampson Low, Marston & company, ltd. pp. 18d–19d.
  5. Pelletier, Alain (1908). "Histoire mondiale des avions de ligne depuis 1908". Boulogne-Billancourt, France: ETAI. ISBN 978-2-7268-9367-8. Missing or empty |url= (help)
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