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Bristol Bulldog


Single-Seat, Single-Engine Biplane Fighter Aircraft (1929)


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The Bristol Bulldog eventually made up about seventy percent of Britain's entire air defense force.



Authored By: Staff Writer | Last Edited: 04/26/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.
In 1926, the British Air Ministry put forth a specification for a radial-piston engine fighter design that could operate in daytime and nighttime with armed with twin Vickers-type machine guns and capable of engaging the top enemy bombers of the day. Bristol responded with the Bulldog I (Mk.I or Mark I) which was used as a developmental model to ultimately become the Bulldog II. The type would become one of Britain's most recognized aircraft creations in the years between both world wars serving with the host nation for some seven years as a frontline fighter. Some 443 examples were produced. The aircraft would serve in the Royal Air Force, Spanish Air Force, Finnish Air Force and the Royal Australian Air Force among others.

In configuration, the Bulldog II sported an all-metal fuselage with a fabric skin covering. The wings were arranged in a typical biplane fashion, equal spanning units with single bays and a single pair of parallel support struts. Power was supplied through the Bristol Jupiter VII series radial piston engine of 440 horsepower. Armament consisted of 2 x 7.7mm Vickers machine guns synchronized to fire through the spinning propeller via an interrupter gear. The undercarriage was fixed with a tail skid and both were designed with grass strip runways in mind. The pilot sat behind and underneath the upper wing assembly in an open air cockpit. The pilot was provided an oxygen supply for operations in high altitudes and even a short-wave two-way radio for communications. In many ways, these two additions were a glimpse into the future of military aviation and were noted collectively as quite the innovation. Optional armament included were 4 x 20lb bombs held under the wings.

The Bulldog II entered service in June of 1929 and effectively replaced the aging Gloster Gamecock and Armstrong Whitworth Siskin fighters then in frontline use. Bulldog II's would never see combat under the British banner but foreign users of the type fared well, particularly Finnish pilots using Bulldogs against their Soviet invaders in World War 2. Other foreign operators included Estonia, Siam (Thailand) and Denmark.

The Bristol Bulldog was inevitably replaced in RAF service by the Gloster Gauntlet. Designed of the Bulldog was headed up by Frank Barnwell, chief designer at Bristol. Other variants existed but were produced in limited numbers, the most notable among them were the two seat Bulldog TM trainer. Nakajima of Japan produced two examples of the Bulldog as the J.S.S.F.

Specifications



Service Year
1929

Origin
United Kingdom national flag graphic
United Kingdom

Status
RETIRED
Not in Service.
Crew
1

Production
443
UNITS


Bristol Aeroplane Company - UK
National flag of Australia National flag of Denmark National flag of Finland National flag of modern Japan National flag of Spain National flag of Sweden National flag of Thailand National flag of the United Kingdom Australia; Denmark; Estonia; Finland; Japan; Latvia; Siam (Thailand); Spain; Sweden; United Kingdom.
(OPERATORS list includes past, present, and future operators when applicable)
Air-to-Air Combat, Fighter
General ability to actively engage other aircraft of similar form and function, typically through guns, missiles, and/or aerial rockets.


Length
25.0 ft
(7.62 m)
Width/Span
33.9 ft
(10.34 m)
Height
9.8 ft
(3.00 m)
Empty Wgt
2,200 lb
(998 kg)
MTOW
3,490 lb
(1,583 kg)
Wgt Diff
+1,290 lb
(+585 kg)
(Showcased structural values pertain to the Bristol Bulldog II production variant)
Installed: 1 x Bristol Jupiter VII Radial Piston Engine developing 440 horsepower driving a two-bladed propeller unit at the nose.
Max Speed
174 mph
(280 kph | 151 kts)
Ceiling
27,001 ft
(8,230 m | 5 mi)
Range
275 mi
(443 km | 820 nm)
Rate-of-Climb
1,379 ft/min
(420 m/min)


♦ MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030


(Showcased performance specifications pertain to the Bristol Bulldog II production variant. Compare this aircraft entry against any other in our database. View aircraft by powerplant type)
STANDARD, FIXED:
2 x 7.7mm Vickers Machine Guns in fixed, forward-firing mountings over the nose synchronized to fire through the spinning propeller blades.

OPTIONAL:
4 x 20lb conventional drop bombs.


Supported Types


Graphical image of an aircraft medium machine gun
Graphical image of an aircraft conventional drop bomb munition


(Not all ordnance types may be represented in the showcase above)
Hardpoint Mountings: 4


Bulldog I (MK.I) - Developmental Prototype Designation; 2 examples produced.
Bulldog II (Mk.II) - Main Production Model Designation; fitted with Bristol Jupiter VII engine of 440 horsepower; 92 examples produced.
Bulldog IIA (Mk.IIA) - Fitted with Bristol Jupiter VIIF engine of 490 horsepower; 268 examples produced.
Bulldog IIIA - (Mk.IIIA) Two examples produced.
Bulldog IVA - (Mk.IVA) Fitted with Bristol Mercury engine of 640 horsepower; 18 examples produced.
Bulldog TM (Type 124) - Two-Seat Trainer Model; 59 examples produced.
J.S.S.F - Nakajima license-production models; only 2 examples.


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