Potez 4D
The Potez 4D was a four-cylinder, inverted inline aircraft engine. It was first built shortly before World War II, but did not enter full production until 1949. Like the other D-series engines, the cylinders had a bore of 125 mm (4.9 in) and a stroke of 120 mm (4.7 in). Power for different models was in the 100 kW-190 kW (140 hp-260 hp) range.
| Potez 4D | |
|---|---|
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| A Potez 4D on display at the Wings Over the Rockies Air and Space Museum | |
| Type | 4-cyl. inverted air-cooled piston engine |
| National origin | France |
| Manufacturer | Société des Avions et Moteurs Henry Potez |
| Major applications | Nord 3202 |
Variants
- 4D-00
- 127 kW (170 hp)
- 4D-01
- 119 kW (160 hp)
- 4D-30
- 179 kW (240 hp)
- 4D-31
- 164 kW (220 hp)
- 4D-32
- 179 kW (240 hp)
- 4D-33
- 119 kW (160 hp)
- 4D-34
- 194 kW (260 hp)
- 4D-36
- 194 kW (260 hp) 4D-34 with aerobatic oil system
Applications
- Morane-Saulnier MS.570
- Morane-Saulnier MS.700 Petrel
- Max Holste MH.52
- Nord 1202 Norécrin
- Nord 3202
- Nord 3400
- SIPA S.70
- S.N.C.A.C. NC-840 Chardonneret
Specifications (Potez 4-D 01)
Data from Jane's All The World's Aircraft 1953-54.[1]
General characteristics
- Type: Four-cylinder air-cooled inverted inline engine
- Bore: 125 mm (4.92 in)
- Stroke: 120 mm (4.72 in)
- Displacement: 5.85 L (352 in³)
- Length: 1,207.5 mm (47.5 in)
- Width: 510 mm (20.1 in)
- Height: 668.5 mm (26.3 in)
- Dry weight: 143 kg (314.6 lb)
Components
- Valvetrain: Two valves per cylinder with sodium cooled exhaust valves
- Fuel system: One Zenith carburettor
- Fuel type: 80 octane minimum
- Oil system: Dry sump with one pressure and two scavenge pumps
- Cooling system: air-cooled
Performance
- Power output: 119 kW (160 hp) at 2,520 rpm (take-off), 97 kW (130 hp) at 2,360 rpm (Max cruise)
- Compression ratio: 7:1
- Specific fuel consumption: 245 gram/hp/hour (take-off)
- Power-to-weight ratio: 0.83 kW/kg (0.51 hp/lb) (take-off)
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Notes
- Bridgman 1953, p.328.
References
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Wikimedia Commons has media related to Potez 4D. |
- Bridgman, Leonard (ed.) (1953). Jane's All The World's Aircraft 1953-54. London: Jane's.CS1 maint: extra text: authors list (link)
- Bridgman, Leonard (ed.) (1961). Jane's All The World's Aircraft 1961–62. London: Sampson Low, Marston & Company, Ltd.CS1 maint: extra text: authors list (link)
- Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens. p. 107.
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