Nord NC.850

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The Nord NC.850 (originally produced as the Aérocentre NC.850) was a light aircraft developed in France in the late 1940s for use by French aeroclubs but which also saw military use as an airborne observation post.[1][2]

Development

The NC.850 series was developed from the Aérocentre NC.840 in response to a competition sponsored by the French government under the auspices of the SALS movement to find a domestically-produced machine for club use.[2][3] Aérocentre's entry was an ungainly high-wing, strut-braced monoplane with a fully enclosed cabin and fixed, tailwheel undercarriage. The fuselage construction was tubular, and the wings had a metal structure, the entire aircraft being skinned in fabric.[4]

The competition was won by the SIPA S.90, but SALS nevertheless also ordered 100 examples of this, the runner-up design.[2] These production examples, designated NC.853, differed from the prototypes in having twin tails, the fins mounted on the ends of the horizontal stabiliser.[2] Only 27 of the order had been completed, however, when Aérocentre was liquidated and its assets bought by Nord.[2] The new owners continued production, with their machines identified with designation NC.853S.

Military version

In March 1951, Nord flew a heavily modified version of the design for use as an observation aircraft by the French Army.[2] Known as the NC.856 Norvegie, this featured a more powerful engine and lengthened and more extensively-glazed cockpit.[2] The army ordered 112 examples which were mostly flown in the artillery spotting role,[5] and while a civil version was also offered, orders were not forthcoming[6] and only two were built.[5] The sole example of a floatplane version was presented as a gift to King Norodom Sihanouk of Cambodia.[6]


Variants

Nord NC.858S
  • NC.850 - prototype with single tail and Mathis G4F engine (1 built)
  • NC.851 - version with Minié 4DA engine (9 built)
  • NC.852 - version with Regnier 4EO engine (2 built)
  • NC.853 - major production version with twin tails and Minié 4DC.30 engine (29 built)
    • NC.853S - NC.853 built by Nord (95 built)
    • NC.853G - NC.853 fitted with aile flottante system (1 converted)
  • NC.854 - NC.853 with Continental A65 engine (2 built, plus many converted from NC.853)
    • NC.854SA - militarised NC.854 (2 built)
  • NC.856 - NC.853 with Walter Minor engine (1 built)
    • NC.856A - military production version with redesigned cockpit, extensive glazing, and Regnier 4LO engine (112 built)
    • NC.856B - four-seat version of NC.856 (1 built)
    • NC.856H - floatplane version of NC.856 with triple tail (1 built)
    • NC.856N - four-seat, civil version of NC.856A (2 built)
  • NC.858S - conversions of NC.853 with Continental C90 engine
  • NC.859S - glider tug version of NC.853 with Walter Minor engine (9 built)

Operators

 France
  • Private owners and Aero clubs
  • Aviation légère de l'armée de terre

Specifications (NC.856A)

Data from Stevens 1953, 813

General characteristics

  • Crew: Two
  • Length: 7.3 m (24 ft 0 in)
  • Wingspan: 12.2 m (40 ft 0 in)
  • Height: 2.1 m (7 ft 0 in)
  • Wing area: 17.0 m2 (183 ft2)
  • Empty weight: 651 kg (1,432 lb)
  • Gross weight: 902 kg (1,984 lb)
  • Powerplant: 1 × Regnier 4L.O4 four cylinder air cooled inverted inline engine, 101 kW (135 hp)

Performance

  • Maximum speed: 189 km/h (118 mph)
  • Cruising speed: 170 [7] km/h (106 mph)
  • Stall speed: 70 [7] km/h (43.5 mph)
  • Endurance: 3 [7][8] hours
  • Rate of climb: 5 m/s (984 [7] ft/min)


Notes

  1. Taylor 1989, 700
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Simpson 1995, 371
  3. Stevens 1952, 8
  4. Stevens 1953, 813
  5. 5.0 5.1 Simpson 1995, 373
  6. 6.0 6.1 "The Paris Show... A First View of the Scene", 832
  7. 7.0 7.1 7.2 7.3 Bridgman 1953, p.144-145.
  8. Liaison role (1 hour in AOP role)

References

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