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Potez 27

The Potez 27 was a French reconnaissance biplane first flown in 1924. 175 were operated by the Polish Air Force, most built in Poland by PWS under licence. Others went to Romania, where they were also used as light bombers.

Potez 27
Role Reconnaissance aircraft
National origin France
Manufacturer Societe des Avions Henri Potez
First flight 1924
Number built 206
Developed from Potez XV
Potez 25

Design and development edit

The Potez 27 was a combination of the wings of the Potez 25 with the fuselage, empennage, engine, landing gear and cabane struts of the Potez XV.[1] The result of this marriage was an unequal span, single bay biplane with a pair of parallel, outward leaning interplane struts on each side, aided by flying wires. The lower wings were attached to the lower fuselage longerons and the upper wings supported over the fuselage on each side by a linked pair of vertical cabane struts from the upper longeron.[2]

The fuselage was flat sided, with a curved decking over most of its length, though the upper engine cowling followed around each cylinder bank of the 400 hp (298 kW) Lorraine-Dietrich 12Db upright V-12 engine. This was water cooled, with Lamblin cylindrical radiators under the wings and between the V-struts on which the rigid axle and wheels of the tailskid undercarriage were mounted. The two cockpits were arranged in tandem, with the pilot under a cut-out in the upper wing trailing edge for better vision; the gunner was equipped with twin Lewis guns on a rotatable, Scarff type mounting. The fin was broad and slightly curved, with a balanced rudder merging smoothly into it; the tailplane was mounted on the top of the fuselage, strut braced from below and carrying balanced elevators.[1][2]

The Potez 27 was first flown in 1924. It was not adopted by L'Armée de l'Air but twenty were sold to the Polish Air Force and another one hundred and fifty-five were built under licence for them by PWS. A further thirty were sold to Romania, who used them both as reconnaissance and light bomber aircraft.[1] The first Type 27 continued to fly in France, for example at the Rally of the Aéro-Club de Auvergne in September 1926[3] and at Villacoublay in May 1928.[4]

Operators edit

  Poland
  Romania

Specifications edit

Data from L'Aéronautque (December 1924)[2]

General characteristics

  • Crew: Two
  • Length: 8.70 m (28 ft 7 in)
  • Wingspan: 13.80 m (45 ft 3 in)
  • Wing area: 45 m2 (480 sq ft)
  • Empty weight: 1,250 kg (2,756 lb)
  • Gross weight: 1,905 kg (4,200 lb)
  • Powerplant: 1 × Lorraine-Dietrich 12Db 12-cylinder upright V-12 engine, water cooled, 300 kW (400 hp)
  • Propellers: 2-bladed

Performance

  • Maximum speed: 215 km/h (134 mph, 116 kn) at sea level
  • Service ceiling: 6,700 m (22,000 ft)
  • Time to altitude: 12.33 minutes to 3,000 m (9,840 ft)

Armament

  • Guns: Twin 0.303 in (7.7 mm) Lewis guns and Scarff type mounting in rear cockpit
  • Bombs: Up to 200 kg (440 lb)

References edit

  1. ^ a b c Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. New York: Portland House. pp. 747–8. ISBN 0-517-69186-8.
  2. ^ a b c "Avion Henry Potez". L'Aéronautique. 2 (13): 51. December 1924.
  3. ^ "Le Rallye arien de l'Aéro Club d'Auvergne en 1926". L'Aérophile(Aérotechnique). Vol. 34, no. 19–20. October 1926. pp. 301–4.
  4. ^ "Les Ailes Regionelles - A Villacoublay". Les Ailes. 360: 2–3. 10 May 1928.

potez, french, reconnaissance, biplane, first, flown, 1924, were, operated, polish, force, most, built, poland, under, licence, others, went, romania, where, they, were, also, used, light, bombers, role, reconnaissance, aircraftnational, origin, francemanufact. The Potez 27 was a French reconnaissance biplane first flown in 1924 175 were operated by the Polish Air Force most built in Poland by PWS under licence Others went to Romania where they were also used as light bombers Potez 27Role Reconnaissance aircraftNational origin FranceManufacturer Societe des Avions Henri PotezFirst flight 1924Number built 206Developed from Potez XV Potez 25 Contents 1 Design and development 2 Operators 3 Specifications 4 ReferencesDesign and development editThe Potez 27 was a combination of the wings of the Potez 25 with the fuselage empennage engine landing gear and cabane struts of the Potez XV 1 The result of this marriage was an unequal span single bay biplane with a pair of parallel outward leaning interplane struts on each side aided by flying wires The lower wings were attached to the lower fuselage longerons and the upper wings supported over the fuselage on each side by a linked pair of vertical cabane struts from the upper longeron 2 The fuselage was flat sided with a curved decking over most of its length though the upper engine cowling followed around each cylinder bank of the 400 hp 298 kW Lorraine Dietrich 12Db upright V 12 engine This was water cooled with Lamblin cylindrical radiators under the wings and between the V struts on which the rigid axle and wheels of the tailskid undercarriage were mounted The two cockpits were arranged in tandem with the pilot under a cut out in the upper wing trailing edge for better vision the gunner was equipped with twin Lewis guns on a rotatable Scarff type mounting The fin was broad and slightly curved with a balanced rudder merging smoothly into it the tailplane was mounted on the top of the fuselage strut braced from below and carrying balanced elevators 1 2 The Potez 27 was first flown in 1924 It was not adopted by L Armee de l Air but twenty were sold to the Polish Air Force and another one hundred and fifty five were built under licence for them by PWS A further thirty were sold to Romania who used them both as reconnaissance and light bomber aircraft 1 The first Type 27 continued to fly in France for example at the Rally of the Aero Club de Auvergne in September 1926 3 and at Villacoublay in May 1928 4 Operators edit nbsp PolandPolish Air Force nbsp RomaniaRomanian Air ForceSpecifications editData from L Aeronautque December 1924 2 General characteristicsCrew Two Length 8 70 m 28 ft 7 in Wingspan 13 80 m 45 ft 3 in Wing area 45 m2 480 sq ft Empty weight 1 250 kg 2 756 lb Gross weight 1 905 kg 4 200 lb Powerplant 1 Lorraine Dietrich 12Db 12 cylinder upright V 12 engine water cooled 300 kW 400 hp Propellers 2 bladedPerformance Maximum speed 215 km h 134 mph 116 kn at sea level Service ceiling 6 700 m 22 000 ft Time to altitude 12 33 minutes to 3 000 m 9 840 ft Armament Guns Twin 0 303 in 7 7 mm Lewis guns and Scarff type mounting in rear cockpit Bombs Up to 200 kg 440 lb References edit a b c Taylor Michael J H 1989 Jane s Encyclopedia of Aviation New York Portland House pp 747 8 ISBN 0 517 69186 8 a b c Avion Henry Potez L Aeronautique 2 13 51 December 1924 Le Rallye arien de l Aero Club d Auvergne en 1926 L Aerophile Aerotechnique Vol 34 no 19 20 October 1926 pp 301 4 Les Ailes Regionelles A Villacoublay Les Ailes 360 2 3 10 May 1928 Retrieved from https en wikipedia org w index php title Potez 27 amp oldid 1101444160, wikipedia, wiki, book, books, library,

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