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__NOTOC__
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
{|{{Infobox Aircraft Begin
{|{{Infobox Aircraft Begin
| name=
| name=Potez IX
| image=Potez IX L'Aéronautique December 1922.jpg
| image=
| caption=
| caption=
}}{{Infobox Aircraft Type
}}{{Infobox Aircraft Type
| type=
| type=Airliner
| national origin=
| national origin=France
| manufacturer=
| manufacturer=[[Potez]]
| designer=
| designer=
| first flight=
| first flight=1920
| introduced=
| introduced=
| retired=
| retired=
| status=
| status=
| primary user=
| primary user=
| number built=
| number built=30
| developed from=
| developed from= [[SEA IV]]
| variants with their own articles=
| variants with their own articles=
}}
}}
|}
|}


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.<ref name="JEA">Taylor 1989, p.747</ref><ref name="IEA">''The Illustrated Encyclopedia of Aircraft'', p.2760</ref>
<!-- ==Development== -->


==Design and development==
<!-- ==Operational history== -->
The design mated an entirely new fuselage to the wing and tail structures of the earlier military aircraft.<ref name="JEA"/><ref name="IEA"/><ref name="Paris 841">"The Paris Aero Show 1921" 22 December 1921, p.841</ref> This fuselage was very deep, nearly filling the interplane gap, and carried within it a fully enclosed cabin with seating for four passengers.<ref name="JEA"/><ref name="IEA"/><ref name="Paris 841"/> The nose area was carefully streamlined<ref name="IEA"/> with curved aluminium,<ref name="Paris 764">"The Paris Aero Show 1921" 17 November 1921, p. [https://www.flightglobal.com/pdfarchive/view/1921/1921%20-%200764.html 764]</ref> 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).<ref name="Paris 842">"The Paris Aero Show 1921" 22 December 1921, p.842</ref> The pilot sat in an open cockpit aft of the cabin.<ref name="IEA"/><ref name="Paris 842"/>


The prototype flew in 1920,<ref name="stdp176">Stroud 1966, p. 176</ref> and was followed by around thirty production examples that differed from it in having a larger tail fin and rudder.<ref name="IEA"/> The [[Compagnie générale transaérienne]] operated Potez IXs on cross-channel air services between Paris and London.<ref name="stdp176"/> The [[Compagnie Franco-Roumaine de Navigation Aérienne]] flew these<ref name="Paris 842"/> 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]].<ref name="stdp176"/> Franco-Roumaine, and its successor airline CIDNA operated the Potez IX until 1928.<ref name="JEA"/><ref name="stdp177">Stroud 1966, p. 177</ref>
<!-- ==Variants== -->


The '''Potez IX S''', a one-off modified version with wings of larger area,<ref name="IEA"/> flew in the Grand Prix de l'Aéro Club de France in June 1921 with [[Gustave Douchy]] at the controls.<ref name="Grand Prix">"The French Aero Club Grand Prix", p.430</ref> Douchy was disqualified in the third stage of the competition.<ref name="Grand Prix"/>
<!-- ==Units using this aircraft/Operators (choose)== -->


==Specifications (variant) ==
==Specifications==
[[File:Potez_IX_3-view_Les_Ailes_December_29,1921.png|thumb|Potez IX 3-view Drawing from Les Ailes December 29,1921]]
{{aerospecs
{{Aircraft specs
|ref=<!-- reference -->
|ref=<!-- reference -->"The Paris Aero Show 1921" 22 December 1921, p.842
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|prime units? = met

|crew=
|crew=One pilot
|capacity=
|capacity=4 passengers
|length m=
|length m=9.80
|length ft=
|length ft=32
|length in=
|length in=2
|span m=
|span m=14.00
|span ft=
|span ft=46
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|height m=3.12
|swept m=<!-- swing-wings -->
|height ft=10
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|height in=3
|swept in=<!-- swing-wings -->
|wing area sqm=46.0
|rot number=<!-- helicopters -->
|wing area sqft=495
|rot dia m=<!-- helicopters -->
|empty weight kg=1,250
|rot dia ft=<!-- helicopters -->
|empty weight lb=2,750
|rot dia in=<!-- helicopters -->
|gross weight kg=2,050
|dia m=<!-- airships etc -->
|gross weight lb=2,511
|dia ft=<!-- airships etc -->
|eng1 number=1
|dia in=<!-- airships etc -->
|eng1 name=[[Lorraine-Dietrich 12Da]]
|width m=<!-- if applicable -->
|width ft=<!-- if applicable -->
|eng1 kw=<!-- prop engines -->280
|width in=<!-- if applicable -->
|eng1 hp=<!-- prop engines -->370
|max speed kmh=200
|height m=
|max speed mph=125
|height ft=
|ceiling m=6,100
|height in=
|ceiling ft=20,000
|wing area sqm=
|climb rate ms=4.2
|wing area sqft=
|climb rate ftmin=820
|swept area sqm=<!-- swing-wings -->
|swept area sqft=<!-- swing-wings -->
|rot area sqm=<!-- helicopters -->
|rot area sqft=<!-- helicopters -->
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|volume ft3=<!-- lighter-than-air -->
|aspect ratio=<!-- sailplanes -->
|wing profile=<!-- sailplanes -->
|empty weight kg=
|empty weight lb=
|gross weight kg=
|gross weight lb=
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|lift lb=<!-- lighter-than-air -->

|eng1 number=
|eng1 type=
|eng1 kw=<!-- prop engines -->
|eng1 hp=<!-- prop engines -->
|eng1 kn=<!-- jet/rocket engines -->
|eng1 lbf=<!-- jet/rocket engines -->
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|eng1 lbf-ab=<!-- afterburners -->
|eng2 number=
|eng2 type=
|eng2 kw=<!-- prop engines -->
|eng2 hp=<!-- prop engines -->
|eng2 kn=<!-- jet/rocket engines -->
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|eng2 lbf-ab=<!-- afterburners -->

|max speed kmh=
|max speed mph=
|max speed mach=<!-- supersonic aircraft -->
|cruise speed kmh=<!-- if max speed unknown -->
|cruise speed mph=<!-- if max speed unknown -->
|stall speed kmh=<!-- aerobatic and STOL aircraft -->
|stall speed mph=<!-- aerobatic and STOL aircraft -->
|range km=
|range miles=
|endurance h=<!-- if range unknown -->
|endurance min=<!-- if range unknown -->
|ceiling m=
|ceiling ft=
|g limits=<!-- aerobatic aircraft -->
|roll rate=<!-- aerobatic aircraft -->
|glide ratio=<!-- sailplanes -->
|climb rate ms=
|climb rate ftmin=
|sink rate ms=<!-- sailplanes -->
|sink rate ftmin=<!-- sailplanes -->

|armament1=
|armament2=
|armament3=
|armament4=
|armament5=
|armament6=
}}
}}

<!-- ==See also== -->
<!-- ==See also== -->
{{aircontent
{{aircontent
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==References==
==References==
{{commons category|Potez IX}}
* {{cite book |title=The Illustrated Encyclopedia of Aircraft |publisher=Aerospace Publishing|location=London |pages= }}
*{{cite magazine |last=Coroller|first=Jean-Louis|title=Les premièrs avions Henry Potez (première partie)|magazine=Avions: Toute l'aéronautique et son histoire |date=September 1998 |issue=66|pages=8–14 |trans-title=The First Aircraft of Henry Potez|language=French |issn=1243-8650}}
* {{cite book |last= Taylor |first= Michael J. H. |title=Jane's Encyclopedia of Aviation |year=1989 |publisher=Studio Editions |location=London |pages= }}
* {{cite magazine |title=The French Aero Club Grand Prix |magazine=[[Flight International|Flight]] |date=23 June 1921 |url=https://archive.org/details/sim_flight-international_1921-06-23_13_25/page/430/mode/2up |pages=430 |access-date=2021-10-29}}
* {{cite book |title=World Aircraft Information Files |publisher=Bright Star Publishing|location=London |pages= }}
* {{cite book |title=The Illustrated Encyclopedia of Aircraft |publisher=Aerospace Publishing|location=London }}

* {{cite book| last=Stroud |first= John |title= European Transport Aircraft since 1910 |year=1966 |publisher=Putnam |location= London}}
<!-- ==External links== -->
* {{cite magazine |title=The Paris Aero Show 1921 |magazine=[[Flight International|Flight]] |date=17 November 1921 |url=https://archive.org/details/Flight_International_Magazine_1921-11-17-pdf/page/n11/mode/2up |pages=758–765|access-date=2021-10-29}}
* {{cite magazine |title=The Paris Aero Show 1921 |journal=[[Flight International|Flight]] |date=22 December 1921 |url=https://archive.org/details/Flight_International_Magazine_1921-12-22-pdf/page/n3/mode/2up |pages=839–842|access-date=2021-10-29}}
* {{cite book |last= Taylor |first= Michael J. H. |title=Jane's Encyclopedia of Aviation |year=1989 |publisher=Studio Editions |location=London |isbn= 0-7106-0710-5 }}
*{{cite journal |last1=Warner|first1=Edward P.|title=Les avions de ligne au banc d'essai en 1921|journal=Le Fana de l'Aviation |date=May 2008 |issue=462 |pages=44–55 |issn=0757-4169 |language=fr|trans-title=Airlines on the Test Bench in 1921}}


{{Aviation lists}}
{{Potez aircraft}}


[[Category: ]]
[[Category:Potez aircraft|R09]]
[[Category:1920s French airliners]]
[[Category:Aircraft first flown in 1921]]
[[Category:Single-engined tractor aircraft]]
[[Category:Biplanes]]

Latest revision as of 13:03, 30 August 2022

Potez IX
Role Airliner
National origin France
Manufacturer Potez
First flight 1920
Number built 30
Developed from SEA IV

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[edit]

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[edit]

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[edit]

  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[edit]

Wikimedia Commons has media related to Potez IX.
  • 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.
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