The Potez IX was an early airliner produced in France in the 1920s, a further development of the SEA IV that Henry Potez had co-designed during the First World War.[1][2]

Design and development

The design mated an entirely new fuselage to the wing and tail structures of the earlier military aircraft.[1][2][3] This fuselage was very deep, nearly filling the interplane gap, and carried within it a fully enclosed cabin with seating for four passengers.[1][2][3] The nose area was carefully streamlined[2] with curved aluminium,[4] but other aspects of the construction were conventional for the day; wooden structures skinned in plywood (the passenger cabin) or fabric (the rest of the aircraft).[5] The pilot sat in an open cockpit aft of the cabin.[2][5]

The prototype flew in 1920,[6] and was followed by around thirty production examples that differed from it in having a larger tail fin and rudder.[2] The Compagnie générale transaérienne operated Potez IXs on cross-channel air services between Paris and London.[6] The Compagnie Franco-Roumaine de Navigation Aérienne flew these[5] on routes linking Paris to Warsaw via Strasbourg and Prague, and from Paris to Budapest via Strasbourg and Vienna, later extending its services to Bucharest and Constantinople.[6] Franco-Roumaine, and its successor airline CIDNA operated the Potez IX until 1928.[1][7]

The Potez IX S, a one-off modified version with wings of larger area,[2] flew in the Grand Prix de l'Aéro Club de France in June 1921 with Gustave Douchy at the controls.[8] Douchy was disqualified in the third stage of the competition.[8]

Specifications

Potez IX 3-view Drawing from Les Ailes December 29,1921

Data from "The Paris Aero Show 1921" 22 December 1921, p.842

General characteristics

  • Crew: One pilot
  • Capacity: 4 passengers
  • Length: 9.80 m (32 ft 2 in)
  • Wingspan: 14.00 m (46 ft 0 in)
  • Height: 3.12 m (10 ft 3 in)
  • Wing area: 46.0 m2 (495 sq ft)
  • Empty weight: 1,250 kg (2,750 lb)
  • Gross weight: 2,050 kg (2,511 lb)
  • Powerplant: 1 × Lorraine-Dietrich 12Da , 280 kW (370 hp)

Performance

  • Maximum speed: 200 km/h (125 mph, 109 kn)
  • Service ceiling: 6,100 m (20,000 ft)
  • Rate of climb: 4.2 m/s (820 ft/min)

Notes

  1. ^ a b c d Taylor 1989, p.747
  2. ^ a b c d e f g The Illustrated Encyclopedia of Aircraft, p.2760
  3. ^ a b "The Paris Aero Show 1921" 22 December 1921, p.841
  4. ^ "The Paris Aero Show 1921" 17 November 1921, p. 764
  5. ^ a b c "The Paris Aero Show 1921" 22 December 1921, p.842
  6. ^ a b c Stroud 1966, p. 176
  7. ^ Stroud 1966, p. 177
  8. ^ a b "The French Aero Club Grand Prix", p.430

References

  • Coroller, Jean-Louis (September 1998). "Les premièrs avions Henry Potez (première partie)" [The First Aircraft of Henry Potez]. Avions: Toute l'aéronautique et son histoire (in French). No. 66. pp. 8–14. ISSN 1243-8650.
  • "The French Aero Club Grand Prix". Flight. 23 June 1921. p. 430. Retrieved 2021-10-29.
  • The Illustrated Encyclopedia of Aircraft. London: Aerospace Publishing.
  • Stroud, John (1966). European Transport Aircraft since 1910. London: Putnam.
  • "The Paris Aero Show 1921". Flight. 17 November 1921. pp. 758–765. Retrieved 2021-10-29.
  • "The Paris Aero Show 1921". Flight. 22 December 1921. pp. 839–842. Retrieved 2021-10-29.
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. ISBN 0-7106-0710-5.
  • Warner, Edward P. (May 2008). "Les avions de ligne au banc d'essai en 1921" [Airlines on the Test Bench in 1921]. Le Fana de l'Aviation (in French) (462): 44–55. ISSN 0757-4169.
Allikas: http://en.wikipedia.org/wiki/Potez_IX
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