Salmson AD.3
# Salmson AD.3

The Salmson AD.3 or Salmson 3 Ad was a French designed, three-cylinder, air-cooled radial aero engine. It was also produced by British Salmson in Great Britain during the 1920s.

## Applications (3 Ad)

* Adaridi AD 3
* Farman Aviette
* Peyret-Nessler Libellule

## Engines on display

A preserved Salmson 3 Ad engine is on public display at the Deutsches Museum, Munich.

## Specifications (AD.3)

Data from Flight, 21 February 1924.

### General characteristics

* Type: Three-cylinder, single-row, water-cooled radial engine
* Bore: 70 mm (2.75 in)
* Stroke: 86 mm (3.4 in)
* Displacement: 0.993 L (60.6 cu in)
* Length: 650 mm (25.6 in)
* Diameter: 550 mm (21.6 in)
* Dry weight: 34 kg (75 lb)

### Components

* Valvetrain: Two overhead valves per cylinder, pushrod operated
* Fuel system: Claudel carburettor
* Oil system: Pressure lubrication
* Cooling system: Air-cooled
* Reduction gear: Direct drive

### Performance

* Power output: 12 kW (16 hp) at 2,400 rpm
* Compression ratio: 5.5.:1
* Specific fuel consumption: 250 g (0.55 lb) per horsepower-hour
* Oil consumption: 15 g (0.33 lb) per horsepower hour
* Power-to-weight ratio: 0.35 kW/kg (0.21 hp/lb)
