Salmson B.9

B.9
	Nine-cylinder Salmson on display at the London Science Museum
Type	Radial engine
Manufacturer	British Salmson
First run	1913
Number built	106

The Salmson B.9 was a French designed, nine-cylinder, water-cooled radial aero engine that was produced under license in Britain. The engine was produced between August 1914 and December 1918. The French version was designated 9B with a slightly increased capacity variant known as the R.9 or 9R.^[1] A further variant known as the M.9 or 9M unusually drove the propeller through a 90-degree gear train.^[2]

Variants

Salmson B.9 (Salmson 9B): 140 horsepower (104 kW)
Salmson M.9 (Salmson 9M): 120 horsepower (89 kW), 90-degree propeller drive
Salmson R.9 (Salmson 9R): 160 horsepower (119 kW, increased bore to 140 mm.

Applications

Salmson B.9

Salmson M.9

Salmson R.9

Farman F.27

Engines on display

A watercooled, nine-cylinder Salmson engine is on public display at the London Science Museum.

Specifications (B.9)

Data from Lumsden.^[1]

General characteristics

Type: Nine-cylinder, single-row, water-cooled radial engine
Bore: 122 mm (4.3 in)
Stroke: 140 mm (5.5 in)

Components

Valvetrain: Two overhead valves per cylinder
Cooling system: Water-cooled
Reduction gear: Direct drive, left hand tractor, right hand pusher

Performance

Power output: 104 kW (140 hp) at 1,250 rpm
Compression ratio: 5.16:1

References

Notes

^ ^a ^b Lumsden 2003, p. 225.
^ Lumsden 2003, p. 226.

Bibliography

Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.

[Lumsden225-1] Lumsden 2003, p. 225.

[2] Lumsden 2003, p. 226.

[1]

[2]