Nieuport-Delage Ni-D 640

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Ni-D 640
Type	four-seat cabin monoplane
National origin	France
Manufacturer	Nieuport-Delage
Maiden flight	1927
Introduced	1930
Primary user	Société des Transports Aériens Rapides
Number built	14

The Nieuport-Delage Ni-D 640 was a French four-passenger transport monoplane built by Nieuport-Delage as a smaller version of the earlier Ni-D 540.

[edit] Development

The Ni-D 640 was an all-wood high-wing cantilver monoplane powered by a nose-mounted radial engine. An enclosed cockpit for two-crew forward of the wing and a cabin for four passengers was aft. The Ni-D 640 was powered by 220hp (164kW) Wright J-5C radial engine and was followed by 12 production aircraft designated Ni-D 641 powered by a 240hp (179kW) Lorraine 7M Mizar radial engine. The Ni-D 640 was converted to an ambulance aircraft and later had a Mizar engine fitted to bring it up to 641 standard. One aircraft was powered by an Armstrong Siddeley Lynx Major engine and designated the Ni-D 642 but it did not find a buyer and was scrapped. Seven Ni-D 641 aircrat were flown by Société des Transports Aériens Rapides (STAR), a subisdary of Nieport-Delage, on cargo and passenger services from Paris.

[edit] Variants

Ni-D 640

Prototype with a 220hp (164kW) Wright J-5C radial engine, one built later converted to a 641.

Ni-D 641

Production aircraft with a 240hp (179kW) Lorraine 7M Mizar radial engine, 12 built.

Ni-D 642

Powered by an Armstrong Siddeley Lynx Major engine, one built.

[edit] Operators

 France

• Société des Transports Aériens Rapides

 Brazil

[edit] Specifications (Ni-D 641)

General characteristics

• Crew: 2
• Capacity: 4 passengers
• Wingspan: 15.40 m (50 ft 6¼ in)
• Gross weight: 1900 kg (4189 lb)
• Powerplant: 1 × Lorraine 7M Mizar radial engin, 179 kW (240 hp)

Performance

• Maximum speed: 205 km/h (127 mph)

[edit] References

• Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. 
• The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing. 

[edit] External links

• STAR and the Nieuport-Delage 641

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