British Salmson AD.9
{{redirect|AD9|the year|AD 9|the destroyer tender|USS Black Hawk (AD-9)}}
| {{Infobox Aircraft Begin
|name= AD.9 |image = Salmson 9AD MLP 05.jpg |caption = Salmson AD.9 on display at the Polish Aviation Museum }} {{Infobox Aircraft Engine |type= Radial engine |national origin = Great Britain |manufacturer= British Salmson |first run= |major applications= |number built = |program cost = |unit cost =£175 (1929)[http://www.flightglobal.com/pdfarchive/view/1929/1929-1-1663.html Flightglobal archive] Retrieved: 24 December 2009 |developed from = |developed into = |variants with their own articles = }} |
British Salmson aero-engines refers to a series of small French designed, air-cooled radial aero engine that were produced by British Salmson Aero Engines Ltd, under license from Société des Moteurs Salmson, in Great Britain during the late 1920s and 1930s.
Because the relatively low power was divided among several cylinders, the running of the engines was particularly smooth, and the torque was very even.[http://www.flightglobal.com/pdfarchive/view/1930/untitled0%20-%200424.html Salmson] in Flight magazine, April 4, 1930. Adding to the smooth running of these engines was the use of the Canton-Unne system of planetary gears in a cage connecting pistons to crank-pin.
Variants
;AD.3:Three cylinder license production of the Salmson 3 Ad
;AC.7:{{convert|105|hp|kW}} seven cylinder radial, capacity {{convert|7.15|L|cuin}}
;AC.9:{{convert|135|hp|kW}} nine cylinder radial, capacity {{convert|9.2|L|cuin}}
;AD.9:{{convert|50|hp|kW}} at 2000 rpm (normal power) or {{convert|55|hp|kW}} at 2200 rpm (maximum power). Bore of 70 mm.
;AD.9R:{{convert|70|hp|kW}}, geared version of AD.9 with increased bore of 73 mm and increased compression ratio (6:1) (3239cc / 197.7cuin).
;AD.9NG:{{convert|203|hp|kW}}, increased bore and stroke. (100 x 140 mm, 9896cc (603.9cuin) capacity).
Applications
Specifications (AD.9)
{{pistonspecs|
|ref=[http://www.flightglobal.com/pdfarchive/view/1930/untitled0%20-%200424.html Salmson] in Flight magazine, April 4, 1930]
|type=Nine-cylinder, single-row, air-cooled radial engine
|bore={{convert|70|mm|in|2|abbr=on}}
|stroke={{convert|86|mm|in|2|abbr=on}}
|displacement= {{convert|2979|cm3|cuin|abbr=on}}
|length=
|diameter={{convert|686|mm|in|1|abbr=on}}
|width=
|height=
|weight={{convert|70|kg|lb|0|abbr=on}}
|valvetrain=Two overhead valves per cylinder, pushrod operated
|supercharger=
|turbocharger=
|fuelsystem=Claudel carburettor
|fueltype=
|oilsystem=Pressure lubrication
|coolingsystem=Air-cooled
|power={{convert|37|kW|hp|0|abbr=on}} at 2,000 rpm
|specpower=
|compression=5.6:1
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight= 0.42 kW/kg (0.26 hp/lb)
|reduction_gear=Direct drive
}}
See also
{{aircontent
|see also=
|related=
|similar aircraft=
|lists=
|similar engines=
}}
References
=Notes=
{{reflist}}
=Bibliography=
{{refbegin}}
- [http://www.flightglobal.com/pdfarchive/view/1929/1929-1%20-%200517.html Flight magazine, 25 July 1929].
- Flight magazine, 22 November 1929.
- [http://www.flightglobal.com/pdfarchive/view/1930/untitled0%20-%200424.html Flight magazine, April 4, 1930].
{{refend}}
{{Salmson aeroengines}}
Category:1920s aircraft piston engines