Nihon N-70 Cygnus

N-70 Cygnus
Role	Single-seat powered sailplane
National origin	Japan
Manufacturer	Nihon University
First flight	16 December 1971
Number built	1

The Nihon N-70 Cygnus is a 1970s Japanese single-seat powered sailplane designed and built by the College of Science and Technology at the Nihon University.

Design and development

Design of the Cygnus started in April 1970 in the Department of Mechnical Engineering, building the aircraft started in June 1970, the Cygnus flew for the first time on 16 December 1971.^[1]

The Cygnus is a cantilever low-wing monoplane with a single spar wooden wing with plywood and aircraft fabric covering, the fuselage is an oval-section semi-monocoque structure covered in plywood.^[1] It is powered by a 44 hp (33 kW) Fuji motor car engine with a two-bladed fixed-pitch wooden propeller.^[1] The pilot has an enclosed cockpit with a transparent one-piece canopy.^[1] The Cygnus has a forward retracting single main wheel, an auxiliary balance wheel below each wing and a non-retractable tailwheel.^[1]

Specifications

Data from Jane's All the World's Aircraft 1973-74^[1]

General characteristics

• Crew: 1
• Length: 6.90 m (22 ft 7¾ in)
• Wingspan: 15 m (49 ft 2½ in)
• Height: 1.75 m (5 ft 9 in)
• Wing area: 15.00 m² (161.5 ft²)
• Aspect ratio: 15
• Empty weight: 343 kg (756 lb)
• Gross weight: 460 kg (1014 lb)
• Powerplant: 1 × Fuji 100-EA61 1100cc water-cooled motor-car engine, 33 kW (44 hp)

Performance

• Maximum speed: 160 km/h (99 mph)
• Stall speed: 70 km/h (44 mph)
• Range: 480 km (298 miles)
• Maximum glide ratio: 25

See also

Related lists

• List of seaplanes and amphibious aircraft
  

References

Notes

1. ^ ^{a b c d e f} Taylor 1973, p. 565

Bibliography

• Jane's All the World's Aircraft 1973-74. London, United Kingdom: Jane's Yearbooks. 1973. ISBN 0 354 00117 5.