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Wolseley Aries

February 28, 2023

The Wolseley Aries III or A.R.9 was a British nine-cylinder, air-cooled radial aero engine that first ran in 1933, it was designed and built by Wolseley Motors. Intended for the military trainer aircraft market few were produced as Wolseley withdrew from the aero engine market in 1936.

A.R.9/Aries/Scorpio
Wolseley Scorpio Mk II
Type Radial aero engine
Manufacturer Wolseley Motors Limited
First run 1933
Major applications Airspeed Envoy
Hawker Tomtit

A larger capacity version was known as the Wolseley Scorpio. Further-enlarged versions, the Leo and Libra, were test run but did not fly.

Variants

A.R.9 Mk I
203 horsepower (151 kW).
A.R.9 Mk II
205 horsepower (153 kW). Higher permissible rpm version of Mk I.
A.R.9 Aries Mk III
225 horsepower (168 kW), low boost supercharger fitted.
Scorpio I
250 horsepower (186 kW), (230 bhp at 2,250 rpm), increased bore (111mm x 120 mm) to give a displacement of 9,477 cc,[1] increased compression ratio. Reduction gearing.
Scorpio II and III
250 horsepower (186 kW), designed to run on 87 octane fuel with 6.5:1 ratio.[2]
Leo
280 horsepower (209 kW), few details, not flown or produced.
Libra
390 hp at 6,000 ft.[3] 725 lbs (329 kg). Tested but not flown or produced.

Applications

Specifications (A.R.9 Aries Mk III)

Data from Lumsden[4]

General characteristics

  • Type: 9-cylinder, single row, radial engine
  • Bore: 4.19 in (106 mm)
  • Stroke: 4.75 in (120 mm)
  • Displacement: 588.6 cu in (9.654 L)
  • Length: 42 in (1,067 mm)
  • Diameter: 41.25 in (1,048 mm)
  • Dry weight: 510 lb (231 kg)

Components

Performance

See also

Comparable engines

Related lists

References

Notes

  1. ^ Flight JULY 18, 1935 Supplement b
  2. ^ Flight JUNE 25, 1936 p684
  3. ^ Flight 23 April 1936. p441
  4. ^ Lumsden 2003, p. 233.

Bibliography

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

External links

  • Flight, June 1936 - Wolseley Aries sectioned image
  • Scorpio described

February 28, 2023
wolseley, aries, british, nine, cylinder, cooled, radial, aero, engine, that, first, 1933, designed, built, wolseley, motors, intended, military, trainer, aircraft, market, were, produced, wolseley, withdrew, from, aero, engine, market, 1936, aries, scorpiowol. The Wolseley Aries III or A R 9 was a British nine cylinder air cooled radial aero engine that first ran in 1933 it was designed and built by Wolseley Motors Intended for the military trainer aircraft market few were produced as Wolseley withdrew from the aero engine market in 1936 A R 9 Aries ScorpioWolseley Scorpio Mk IIType Radial aero engineManufacturer Wolseley Motors LimitedFirst run 1933Major applications Airspeed EnvoyHawker TomtitA larger capacity version was known as the Wolseley Scorpio Further enlarged versions the Leo and Libra were test run but did not fly Contents 1 Variants 2 Applications 3 Specifications A R 9 Aries Mk III 3 1 General characteristics 3 2 Components 3 3 Performance 4 See also 5 References 5 1 Notes 5 2 Bibliography 6 External linksVariants EditA R 9 Mk I 203 horsepower 151 kW A R 9 Mk II 205 horsepower 153 kW Higher permissible rpm version of Mk I A R 9 Aries Mk III 225 horsepower 168 kW low boost supercharger fitted Scorpio I 250 horsepower 186 kW 230 bhp at 2 250 rpm increased bore 111mm x 120 mm to give a displacement of 9 477 cc 1 increased compression ratio Reduction gearing Scorpio II and III 250 horsepower 186 kW designed to run on 87 octane fuel with 6 5 1 ratio 2 Leo 280 horsepower 209 kW few details not flown or produced Libra 390 hp at 6 000 ft 3 725 lbs 329 kg Tested but not flown or produced Applications EditAirspeed Envoy Hawker TomtitSpecifications A R 9 Aries Mk III EditData from Lumsden 4 General characteristics Type 9 cylinder single row radial engine Bore 4 19 in 106 mm Stroke 4 75 in 120 mm Displacement 588 6 cu in 9 654 L Length 42 in 1 067 mm Diameter 41 25 in 1 048 mm Dry weight 510 lb 231 kg Components Valvetrain Overhead valve Supercharger Single speed geared induction fan slight positive pressure Fuel type Petrol Cooling system Air cooled Reduction gear Epicyclic spur geared right hand tractor reduction ratio 0 629 1Performance Power output 225 hp 168 kW at 2 475 rpm maximum power Specific power 0 38 hp cu in 17 4 kw L Compression ratio 5 35 1 Power to weight ratio 0 49 hp lb 0 72 kW kg See also EditComparable engines Alvis Leonides Lycoming R 680Related lists List of aircraft enginesReferences EditNotes Edit Flight JULY 18 1935 Supplement b Flight JUNE 25 1936 p684 Flight 23 April 1936 p441 Lumsden 2003 p 233 Bibliography Edit Lumsden Alec British Piston Engines and their Aircraft Marlborough Wiltshire Airlife Publishing 2003 ISBN 1 85310 294 6 External links EditFlight June 1936 Wolseley Aries sectioned image Scorpio described Retrieved from https en wikipedia org w index php title Wolseley Aries amp oldid 1018266850, wikipedia, wiki, book, books, library,

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