The
Contents 1 Design and development 2 Variants 3 Applications 4 Specifications (A.74) 4.1 General characteristics 4.2 Components 4.3 Performance 5 See also 6 References Design and development[edit]
The A.74 was important in that it marked a transition for
A.74 R.C.18 With reduction gear and supercharger, rated altitude 1,800 m (5,900 ft). A.74 R.C.38 With reduction gear and supercharger, rated altitude 3,800 m (12,500 ft). A.74 R.C.38D A.74 R.C.38S A.74 R.I.C.38 With reduction gear, fuel injection and supercharger, rated altitude 3,800 m (12,500 ft). A.74 R.C.42 With reduction gear and supercharger, rated altitude 4,200 m (13,800 ft). Applications[edit] CANSA FC.20
Specifications (A.74)[edit] Data from A.74 engine manual General characteristics Type: 14-cylinder air-cooled radial Bore: 140 mm (5.512 in) Stroke: 145 mm (5.709 in) Displacement: 31.25 L (1,906.9 cu in) Length: 1,044mm (41.13 in) Width: 653mm (25.71 in) Height: 1,195 mm (47.05 in) Dry weight: 565 kg (1,246 lb) Components Valvetrain: One intake and one sodium-cooled exhaust valve per cylinder Fuel system: 1 Stromberg carburettor Fuel type: 87 octane Cooling system: air-cooled Performance Power output: 870 cv (858 hp, 640 kW) at 2,520 rpm at sea level (take-off power); 960 cv (947 hp, 706 kW) at 2520 rpm at 3,000 m (Emergency power) [1] Compression ratio: 6.7:1 Power-to-weight ratio: 1.1 kW/kg (0.67 hp/lb) See also[edit] Comparable engines BMW 801 Bristol Hercules Pratt & Whitney R-1830 Wright R-2600 Gnome-Rhône 14N Mitsubishi Kinsei Nakajima Sakae Shvetsov ASh-82 Related lists List of aircraft engines References[edit] Wikimedia Commons has media related to
oldengine.org ^ A.74 engine manual v t e
Piston engines A.10 A.12 A.14 A.15 A.18 A.20 A.22 A.24 A.25 A.30 A.50 A.53 A.54 A.55 A.58 A.59 A.60 A.70 A.74 A.76 A.78 A.80 A.82 AN.1 AS.2 AS.3 AS.5 AS.6 AS.8 SA8/75 S.55 Turbine engines 4002 40 |