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The Bristol Mercury Aircraft Engine

Roy Fedden designed the Bristol Mercury nine-cylinder air-cooled radial piston engine in the early 1920's. The Bristol Mercury was based on the earlier Bristol Jupiter engine but with considerably increased performance, when first run in 1925 the Bristol Mercury produced 420 hp, late supercharged variants produced 870 hp. By the end of production well over 20,000 Bristol Mercury engines had been produced including licence built engines in Poland, Sweden, Italy and Czechoslovakia

Bristol Mercury Aircraft Engine

 

Aircraft powered by the Bristol Mercury

Airspeed CambridgeBlackburn SkuaBoulton Paul P.108
Bristol BlenheimBristol BolingbrokeBristol Bulldog
Bristol BullpupBristol Type 101Bristol Type 118
Bristol Type 133Bristol Type 142Bristol Type 146
Bristol Type 148

Breda Ba.27

Fairey Flycatcher
Fokker D XXIFokker G.1General Aircraft Hamilcar X
Gloster GamecockGloster GladiatorGloster Gauntlet
Gloster GnatsnapperGloster GoringHawker Audax
Hawker F.20/27Hawker FuryHawker Hart
Hawker HindHawker HoopoeHawker F.20/27
IMAM Ro.30Miles MartinetMiles Master
PZL P.11Saab 17Short Crusader
Supermarine Sea OtterValmet VihuriVickers Jockey
Westland InterceptorWestland Lysander 

Bristol Mercury VI-S Specifications:

  • Type: Nine-cylinder, single-row, supercharged, air-cooled radial engine
  • Bore: 5.75 in (146 mm)
  • Stroke: 6.5 in (165 mm)
  • Displacement: 1,520 in (24.9 L)
  • Length: 47 in (1,194 mm)
  • Diameter: 51.5 in (1,307 mm)
  • Dry weight: 966 lb (438 kg)
  • Valve-train: Overhead valve, 4 valves per cylinder 2 intake and 2 sodium-filled exhaust
  • Supercharger: Single-speed centrifugal type supercharger
  • Fuel system: Claudel-Hobson carburettor
  • Fuel type: 87 Octane petrol
  • Cooling system: Air-cooled
  • Reduction gear: Farman epicyclic gearing, 0.5:1, left hand tractor

Bristol Mercury VI-S Power output:

  • 612 hp (457 kW) at 2,750 rpm for takeoff
  • 636 hp (474 kW) at 2,750 rpm at 15,500 ft (4,730 m)
  • Specific power: 0.4 hp/in (18.35 kW/L)
  • Compression ratio: 6:1
  • Specific fuel consumption: 0.49 lb/(hph) (300 g/kWh)
  • Power-to-weight ratio: 0.63 hp/lb (1.04 kW/kg)
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    Bristol Mercury Aircraft Engine picture and Specifications

     

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