Walter NZ 85
1920s Czech piston aircraft engine
From Wikipedia, the free encyclopedia
The Walter NZ 85 was a seven-cylinder, air-cooled, radial engine for aircraft use built in Czechoslovakia by Walter Aircraft Engines in the late-1920s.
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| NZ 85 | |
|---|---|
| NZ 85 on display at the National Technical Museum (Prague) | |
| Type | Radial aero engine |
| National origin | Czechoslovakia |
| Manufacturer | Walter Aircraft Engines |
| First run | 1926 |
| Number built | 50 |
| Developed from | Walter NZ 60 |
| Developed into | Walter Venus |
Design and development
Using common cylinders and parts from the earlier Walter NZ 60 (Novák-Zeithammer) engine the NZ 85 and the nine-cylinder NZ 120 were designed together.[1] Lightened and tuned developments were known as the NZ 90 and NZ 95.
Applications
- Aero A.34
- Avia BH-20
- Avia BH-29
- Breda Ba.15
- Couzinet 30 (intended application)
- Gribovsky G-8
- Hopfner HS-8/29
- IMAM Ro.5
- Letov Š-118
- Orta-Saint Hubert G.1
- Savoia-Marchetti S.56
- Shavrov Sh-1
Specifications (NZ 85)
Data from Němeček.[2]
General characteristics
- Type: Seven-cylinder radial piston engine
- Bore: 105 mm (4.13 in)
- Stroke: 120 mm (4.72 in)
- Displacement: 7.27 L (444 cu in)
- Length: 741 mm (29.2 in)
- Diameter: 990 mm (39.0 in)
- Dry weight: 125 kg (276 lb)
Components
- Fuel system: Zenith carburettor
- Cooling system: Air-cooled
Performance
- Power output: 74 kW (99 hp)
