Bentley BR1

E106685

The Bentley BR1 was a British World War I rotary aircraft engine renowned for its power and reliability in frontline fighters.

All labels observed (2)

Label Occurrences
Bentley BR1 canonical 1
Bentley BR2 1

How this entity was disambiguated

Statements (44)

Predicate Object
instanceOf aircraft engine
piston engine
rotary engine
aircraftApplication Sopwith 1½ Strutter
Sopwith Camel
Sopwith Snipe (early prototypes)
linked to: Sopwith Snipe
bore 5.0 in
category World War I aircraft piston engine
rotary aircraft engine
configuration 9-cylinder rotary
coolingSystem air-cooled
countryOfOrigin United Kingdom
designer W. O. Bentley
developedFrom Clerget 9B
displacement approximately 25 litres
era World War I era
firstFlightInServiceAircraft 1917
fuelType aviation gasoline
historicalReputation highly reliable in frontline service
powerful for its time
ignitionSystem dual magnetos
lubricationSystem total-loss oil system
manufacturer Gwynnes Limited
Humber Limited
Vickers Limited
linked to: Vickers-Armstrongs
materialUsed aluminium pistons
steel cylinders
namedAfter Bentley (designer W. O. Bentley)
linked to: W. O. Bentley
notableFeature improved reliability over contemporary rotary engines
reduced use of castor oil compared to earlier rotaries
operator Royal Air Force
Royal Flying Corps
Royal Naval Air Service
powerOutput 150 hp
approximately 112 kW
productionPeriod circa 1917–1918
role fighter aircraft powerplant
serviceEntry 1917
status obsolete
stroke 7.0 in
successor Bentley BR2
linked to: Bentley BR1
usedBy British Empire military aviation
usedInConflict World War I
valvetrain two valves per cylinder

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Sopwith Camel typicalEngineModel Bentley BR1
Bentley BR1 successor Bentley BR2
linked to: Bentley BR1