Английская Википедия:Anzani 6-cylinder

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Шаблон:Short description

Alessandro Anzani developed the first two-row radial from his earlier 3- cylinder Y engine by merging two onto the same crankshaft with a common crankweb.

Development

By December 1909 Anzani had a 3-cylinder air-cooled true radial engine running,[1] developed from the earlier 3-cylinder fan configuration engines (semi-radials) that had powered Bleriot across the Channel. By about March 1910 he had completed the first two-row radial engine, a 6-cylinder unit made by merging two 3-cylinder units together, one slightly behind the other and at an angle of 60°. The engine therefore had a lot in common with the early 3-cylinder motors: cylinders were a single iron casting with built-in valve cells and ribs, and pistons were steel with cast-iron rings. The early versions were side-valve engines with automatic (atmospheric pressure opened) inlet valves and exhaust valves mechanically operated via cams in the crankcase. By the end of 1912,[2] as with the smaller engines the exhaust valves were moved to the cylinder heads and operated by push-rods and rockers. The exhaust valves were at the front of the engine, with the fuel inlet manifold at the rear. A prominent pair of 150° exhaust tubes were fitted. Plugs were mounted in the cylinder sides, in the plane of the engine and on the upper side to minimise plug fouling by lubricant.

Файл:Anzani 6 B Keski-Suomen ilmailumuseo.JPG
Showing how the six-cylinder engine was built from two three cylinder halves
Файл:TNCA Aztatl and Propeller Anahuac.jpg
A T.N.C.A. Aztatl with an Anáhuac propeller mounted on a TNCA Serie H at Museo Militar de Aviación.

The crankcase was an aluminium casting and in later models contained a fuel mixing chamber. These later versions also used long bolts to attach the cylinders to the crankcase.[2] The engine used a single, kinked crankweb, coupled to slim but broad connecting rods in order to minimise the axial displacement between the two rows.[1] This was less than in more recent double row radials, the rear face of the front row falling on the centre plane of the back row.[3] The engine was not strictly a radial, as the crankweb geometry slightly offset the centres of the two rows, an arrangement best seen from the back of the engine,[4] where the superimposed inlet tubes and push-rods of the later engine highlight the cylinder centre lines. Such an offset between cylinder centre line and crankshaft is often termed désaxé.

The earliest of the 6-cylinder radials had a bore of 90 mm and stroke of 120 mm[1] giving a displacement of 4.58 litres (280 cu in) and an output of 34 kW (45 hp) at 1,300 rpm. Its weight was 70 kg (154 lbs).[5] A later version produced 45 kW (60 hp) from 6.23 litres (380 cu in).[5]

Variants

45 hp (34 kW)
Anzani's first two-row radial developed 34 kW (45 hp) from 4.58 L (280 cu in) displacement.
60 hp (45 kW)
Larger cylinders gave 45 kW (60 hp) at 1,300 rpm from 6.23 L (380 cu in ) displacement.
TNCA Aztatl
A direct copy of the 60 hp 6-cylinder Anzani, produced in Mexico by TNCA (Talleres Nacionales de Construcciones Aeronáuticas - national aviation workshops).

Applications

Aeromarine EO
Austin Whippet
Caudron Type Caudron-Fabre
Caudron Type N
Caudron C.114
Działowski D.K.D.3
Działowski D.K.D.4
Farman Scout
Gabriel Śląsk
Laird B-4
Perry Beadle T.2
TNCA Serie A
TNCA Serie H
Westland Woodpigeon II

Specifications (60 hp overhead valve)

Файл:Anzani 6 oblique Shuttleworth.jpg
Shuttleworth Collection engine

Шаблон:Pistonspecs Шаблон:Aircontent

See also

Шаблон:Aircontent

References

Шаблон:Commons category

Notes

Шаблон:Reflist

Bibliography

Шаблон:Refbegin

Шаблон:Refend

Шаблон:Anzani aeroengines

  1. 1,0 1,1 1,2 Шаблон:Harvnb
  2. 2,0 2,1 Flight, 4 January 1913 p. 20-1
  3. Flight, 4 January 1913 fig 3
  4. Flight, 4 January 1913 fig 2
  5. 5,0 5,1 Flight 5 July 1913