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]

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.

Salmson B.9

• Farman F.27
• Short Admiralty Type 135
• Short Type C
• Short 830
• Voisin LA.S

Salmson M.9

• Blackburn Type L
• Breguet U2
• Voisin LA

Salmson R.9

• Farman F.27

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

Data from Lumsden.^[1]

• Salmson

Comparable engines

• ABC Dragonfly

Related lists

• List of aircraft engines