Top Qs
Timeline
Chat
Perspective

Lorraine 14A Antarès

1930s French piston aircraft engine From Wikipedia, the free encyclopedia

Lorraine 14A Antarès
Remove ads

The Lorraine 14A Antarès was a French 14-cylinder radial aero engine built and used in the 1930s. It was rated in the 370 kW (500 hp) range.

Quick facts 14A Antarès, Type ...

Design and development

Summarize
Perspective

The Antarès was a conventionally laid out radial engine, with 14 cylinders in two rows. The crankcase was a barrel-shaped aluminium alloy casting, with an internal integral diaphragm which held the front crankshaft bearing. Forward of the diaphragm there was an integrally cast cam-gear case for the double track cam-rings. The reduction gear was housed under a domed casing attached to the front of the crankcase.

Flange-mounted steel barrels were bolted to the crankcase and enclosed with cast aluminium alloy, screwed-on, cylinder heads with integral cooling fins. The pistons were also made of aluminium alloy and had floating gudgeon pins. The fourteen pistons drove the double throw crankshaft via two channel-section master rods and twelve circular section auxiliary rods. The master rod had an integral, split type big-end. The crankshaft was machined from a single forging, with bolt-on balance weights.

The Antarès had a single pair of overhead inlet and exhaust valves per cylinder. The cam-rings drove roller tappets, mounted in the cam-case, which in turn operated rocker arms, fitted with ball bearings, via pushrods. The cam-rings were concentric with the crankshaft and driven via epicyclic gears. Most Antarès were conventionally aspirated via a single carburettor.

Remove ads

Variants

14A
14Ac
14E
14L

Specifications

Data from Societe Generale Aeronautique[1]

General characteristics

  • Type: 14-cylinder two-row radial piston engine
  • Bore: 140 mm (5.51 in)
  • Stroke: 150 mm (5.91 in)
  • Displacement: 32.326 L (1,972.7 cu in)
  • Length: 1,424 mm (56.06 in) - direct drive, 1,552 mm (61.10 in) - reduction gear
  • Diameter: 1,240 mm (48.82 in)
  • Dry weight: complete 448 kg (988 lb) - direct drive, 487 kg (1,074 lb) - reduction gear

Components

  • Valvetrain: one inlet and one exhaust overhead valve per cylinder, operated with rocker arms, pushrod driven via roller tappets bearing on a double track cam-ring
  • Fuel system: dual 75 mm (2.95 in) Zenith carburettors
  • Fuel type: petrol
  • Cooling system: air-cooled
  • Reduction gear: 0.647:1

Performance

References

Loading related searches...

Wikiwand - on

Seamless Wikipedia browsing. On steroids.

Remove ads