Blenheim (Types 142M, 149, 160)
Work takes place on a Blenheim Mk. IV
Type	Light bomber/fighter
Manufacturer	Bristol Aeroplane Company
Designed by	Frank Barnwell
Maiden flight	12 April 1935
Introduction	1937
Retired	1944 (United Kingdom) 1956 (Finland)
Primary users	Royal Air Force Royal Canadian Air Force Finland Yugoslavia
Number built	4,422

The Bristol Blenheim was a British light bomber aircraft designed and built by the Bristol Aeroplane Company that was used extensively in the early days of the Second World War. The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located Light bomber is a relatively small and fast class of Military Bomber aircraft which was employed mainly before the 1950s The Bristol Aeroplane Company, originally British and Colonial Aeroplane Company was a major British aviation company World War II, or the Second World War, (often abbreviated WWII) was a global military conflict which involved a majority of the world's nations, including It was later adapted into a successful long-range fighter and night fighter. A heavy fighter is a Fighter aircraft designed to carry heavier weapons or operate at longer ranges A night fighter (also all-weather fighter) is a Fighter aircraft adapted for use at night or in other times of bad visibility A Canadian-made variant named the Bolingbroke was used as an anti-submarine and training aircraft. Anti-submarine warfare (ASW or in older form A/S is a branch of Naval warfare that uses surface Warships Aircraft, space craft or other Submarines A trainer is an Aircraft used to develop piloting navigational or war-fighting skills in flight crew It was one of the first British aircraft to have all-metal stressed skin construction, to utilise retractable landing gear, flaps, powered gun turret and variable-pitch propellers. Flaps are hinged surfaces on the trailing edge of the wings of a Fixed-wing aircraft. A propeller is essentially a type of fan which transmits power by converting Rotational motion into Thrust for propulsion of a vehicle such as an

Design and development

Blenheim Mk. IV cockpit. Note the asymmetry of the instrument console, indicating the position of the scooped out area of the nose in front of the pilot. The ring and bead gunsight for the forward firing guns is visible.

In 1934 Lord Rothermere, owner of the Daily Mail, issued a challenge to the British aviation industry to build a high-speed aircraft capable of carrying six passengers and two crew members. Harold Sidney Harmsworth 1st Viscount Rothermere ( 26 April 1868 – 26 November 1940) was a highly successful British Newspaper The Daily Mail is a British newspaper currently published in a tabloid format At the time German firms were producing a variety of high-speed designs that were breaking records, and Rothermere wanted to recapture the title of fastest civilian aircraft in Europe. Bristol had been working on a suitable design as the Type 135 since July 1933, and further adapted it to produce the Type 142 to meet Rothermere's requirements.

When it first flew as Britain First at Filton on 12 April 1935^[1] , it proved to be faster than any fighter in service with the Royal Air Force at the time. Filton is a town in South Gloucestershire, England, situated on the northern outskirts of the city of Bristol, about 4 Events 467 - Anthemius is elevated to Emperor of the Western Roman Empire. Year 1935 ( MCMXXXV) was a Common year starting on Tuesday (link will display full calendar of the Gregorian calendar. ^[1] The Air Ministry was obviously interested in such an aircraft and quickly sent out Specification B.28/35 for prototypes of a bomber version; the Type 142M (M for military). The Air Ministry was formerly a department of the British Government with the responsibility of managing the affairs of the Royal Air Force. This is a partial list of the British Air Ministry (AM specifications for Aircraft. The main changes were to move the wing from a low-wing to a mid-wing position, allowing room under the main spar for a bomb bay. In an aircraft the spar is the main structural member of the wing running widthways across the span of the wing at right angles (or thereabouts to the Fuselage. The aircraft was all-metal with two Bristol Mercury VIII air-cooled radial engines, each of 860 hp (640 kW). WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout The radial engine is a reciprocating type internal combustion Engine configuration in which the cylinders point outward from a central It carried a crew of three – pilot, navigator/bombardier and telegraphist / air gunner. Armament comprised a single forward-firing 0.303 inch (7. 7 mm) Browning gun outboard of the port engine and a 0. The Browning M1919 is a.30 caliber Medium machine gun family widely used during the 20th century 303 inch Lewis gun in a semi-retracting Bristol Type B Mk. The Lewis Gun is a pre- World War I era Squad automatic weapon / Machine gun of American design that was most widely used by the forces of the British I dorsal turret firing to the rear. From 1939 onwards, the Lewis gun was replaced by the more modern Vickers K of the same calibre. The Vickers K gun known as the Vickers Gas Operated (VGO in British service was a rapid-firing Machine gun developed and manufactured for use in A 1,000 lb (454 kg) bomb load could be carried in the internal bay.

To achieve its relatively high speed, the Blenheim had a very small fuselage cross-section. Pilot's quarters on the left side of the nose were so cramped that the control yoke obscured all flight instruments while engine instruments eliminated the forward view on landings. Most secondary instruments were arranged along the left side of the cockpit with essential items like propeller pitch control actually placed behind the pilot where they had to be operated by feel alone. Like most contemporary British aircraft, the bomb bay doors were kept closed with bungee cords and opened under the weight of the released bombs. A bungee cord is an elastic cord composed of one or more elastic strands forming a core covered in a woven sheath usually of nylon or cotton Because there was no way to predict how long it would take for the bombs to force the doors open, bombing accuracy was consequently poor. ^[2]

The aircraft was ordered directly from the drawing board with the first production model, known at the time as the Bolingbroke (pronounced Bolling-brook), serving as the first and only prototype^[3]. The name then became Blenheim Mk. I with subsequent deliveries started in March 1937, with 114 Squadron being the first squadron to receive the Blenheim. ^[3] The aircraft would prove to be so successful that it was licensed by a number of countries, including Finland and Yugoslavia. Finland, officially the Republic of Finland ( is a Nordic country situated in the Fennoscandian region of northern Europe. The Kingdom of Yugoslavia (Serbo-Croato-Slovene ie Serbo-Croatian, Bosnian, Croatian, Serbian, Slovene: Kraljevina Jugoslavija Other countries bought it outright, including Romania, Greece and Turkey. Romania ( dated: Rumania, Roumania Greece (Ελλάδα transliterated: Elláda, historically, Ellás,) officially the Hellenic Republic (Ελληνική Δημοκρατία Turkey (Türkiye known officially as the Republic of Turkey ( is a Eurasian Country that stretches Total production of the Blenheim in England amounted to 1,351 Mk Is.

Variants

Bolingbroke Mk. IV at the British Columbia Museum of Flight, Victoria, British Columbia

A Bristol Blenheim bomber at the RAF Museum, London

Work on an extended range reconnaissance version started as the Blenheim Mk. The Royal Air Force Museum ( RAF Museum) is a Museum dedicated to the history of Aviation, and the British Royal Air Force in particular London ( ˈlʌndən is the capital and largest urban area in the United Kingdom. Reconnaissance (also scouting) is a military and medical term denoting exploration conducted to gain information II, which increased tankage from 278 to 468 gallons, but only one was completed. Another modification resulted in the Blenheim Mk. III, which lengthened the nose to provide more room for the bombardier. This required the nose to be "scooped out" in front of the pilot to maintain visibility during takeoff and landing. However both of these modifications were instead combined, along with a newer version of the Mercury engine with 905 hp (675 kW) and the turret acquired a pair of Brownings instead of the Vickers K; creating the Blenheim Mk. IV. In total, 3,307 would eventually be produced.

Another modification led to a long range fighter version; the Blenheim Mk. IF. For this role, about 200 Blenheims were fitted with a gun-pack under the fuselage for four 0. 303 in Brownings. Later, the Airborne Intercept (AI) Mk III or IV radar would be fitted to some aircraft in use as night fighters, becoming the first British fighters equipped with radar. Radar is a system that uses electromagnetic waves to identify the range altitude direction or speed of both moving and fixed objects such as Aircraft, ships Their performance was marginal as a fighter, but sufficient for the task in hand and they served before the advent of more sophisticated machines. About 60 of Mk IVs were also equipped with the gun pack as the Mk. IVF and were used by Coastal Command to protect convoys from German long-range bombers.

The last bomber variant was conceived as an armoured ground attack aircraft, with a solid nose containing four more Browning machine guns. Ground-attack aircraft are military aircraft designed to attack targets on the ground and are often deployed as Close air support for and in proximity to their own ground forces Originally known as the Bisley, the production aircraft were renamed Blenheim Mk. V and featured a strengthened structure, pilot armour, interchangeable nose gun pack or bombardier position and, yet another Mercury variant, this time with 950 hp (710 kW). The Mk. V was ordered for conventional bombing operations, with the removal of armour and most of the glazed nose section. The Mk V or Type 160, was used primarily in the Middle East and Far East.

The Blenheim would serve as the basis for the Beaufort torpedo bomber, which itself led to the Beaufighter; the lineage performing two complete circles of bomber to fighter. Bristol Beaufort was also a Car produced by Bristol Cars in the late 1980s and early 1990s The Bristol Beaufighter is also the name of a Car produced by Bristol Cars in the 1980s

Bolingbroke

The longer range also fulfilled a Canadian requirement for a maritime patrol aircraft. Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page Consequently, Fairchild Aircraft Ltd. (Canada) of Quebec started production of the Blenheim Mk. The Fairchild Aircraft Ltd of Longueuil, Quebec, Canada was an Aircraft manufacturer in the period 1920-1950 IV as the Bolingbroke, nicknamed the "Bolly". After a small run of aircraft constructed to British specifications, as the Bolingbroke Mk. I, Fairchild switched production to the Bolingbroke Mk IV with American instruments and equipment. These versions also included anti-icing boots and a dinghy. A dinghy is a type of small Boat, often carried or towed by a larger vessel Some of these aircraft served as bombers during the Aleutians campaign, but most of the 150 served in the intended role as patrol bombers on the Atlantic coast. The Aleutian Islands (possibly from Chukchi aliat, " Island " are a chain of more than 300 small volcanic islands forming a Volcanic Another 450 were completed as the Bolingbroke Mk IVT as trainers and saw extensive use in the Commonwealth Air Training Plan. A trainer is an Aircraft used to develop piloting navigational or war-fighting skills in flight crew The British Commonwealth Air Training Plan, also known as the Empire Air Training Scheme, Empire Air Training Plan, Commonwealth Air Training Plan One of the final variants was the Bolingbroke Mk IVW which was powered by two 634 kW (850-hp) Pratt & Whitney SB4G Twin Wasp Junior engines. A total of 676 Bolingbrokes was produced.

Operational history

Circa 8 February 1941. Events 421 - Constantius III becomes co- Emperor of the Western Roman Empire. Year 1941 ( MCMXLI) was a Common year starting on Wednesday (the link will display 1941 calendar of the Gregorian calendar. Blenheim Mark Is of No. 62 Squadron RAF lined up at RAF Tengah, Singapore, before flying north to their new base at Alor Star, in northern Malaya. No 62 Squadron RAF was formed on 8 August 1916 at Filton from No Singapore Alor Star, formerly known as Alor Setar is the state capital of Kedah, Malaysia, and Kota Setar District's Administrative Centre. British Malaya loosely described a set of states on the Malay Peninsula that were colonized by the British from the 18th and the 19th until the 20th century

Bristol Blenheim Mark IV bombers at RAF Tengah, Singapore. Singapore June 1941

By the start of the Second World War, fighter technology had eclipsed the Blenheim's speed advantage and it would only achieve moderate success in its intended role as a bomber. One of the greatest advantages that the Blenheim had over other fighter aircraft was its range. It could penetrate deep into enemy territory but it was vulnerable if it came into contact with any enemy fighters. With a top speed of only 263 mph (423 km/h) and cumbersome and slow in turning, it was soon eclipsed by other more modern types. Nonetheless, the Blenheim continued in frontline service throughout the early years of the conflict.

After France fell to Germany in June 1940, the Free French Air Force was formed at RAF Odiham in the form of Groupe Mixte de Combat (GMC) 1, consisting of a mixed bag of Blenheims and Westland Lysander liaison/observation aircraft, which eventually went to North Africa and saw action against the Italians and Germans. This article is about the country For a topic outline on this subject see List of basic France topics. In World War II, the Battle of France, also known as the Fall of France, was the German invasion of France and the Low Countries The Free French Air Force (Forces Aériennes Françaises Libres FAFL were the air arm of Free French Forces during the Second World War. RAF Odiham is a Royal Air Force station situated a little to the south of the historic small village of Odiham in Hampshire, England WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout North Africa or Northern Africa is the Northernmost Region of the African Continent, separated by the Sahara from Sub-Saharan

Long-range fighter

The Bristol Blenheim was used by both Bomber and Fighter Commands. Fighter Command was one of three functional commands that dominated the public perception of the Royal Air Force for much of the mid-20th century Some 200 Mk. I bombers were modified into Mk. IF long-range fighters with 600 (Auxiliary Air Force) Squadron based at Hendon, the first squadron to take delivery of these variants in September 1938. Hendon Aerodrome was an aerodrome in Hendon, north London, England and between 1908 and 1968 was an important centre for Aviation. By 1939, at least seven squadrons were operating these twin engined fighters and within a few months some 60 squadrons had experience of the type. The Mk. IF proved to be slower and less nimble than expected and by June 1940, daylight Blenheim losses was to cause concern for Fighter Command. It was then decided that the IF would be relegated mainly to night fighter duties where No. 23 Squadron RAF who had already operated the type under night time conditions had better success. A night fighter (also all-weather fighter) is a Fighter aircraft adapted for use at night or in other times of bad visibility No 23 Squadron of the Royal Air Force operates the Boeing E-3D Sentry from RAF Waddington, Lincolnshire

Night fighter

In the German night bombing raid on London, 18 June 1940, Blenheims accounted for five German bombers thus proving they were better suited in the nocturnal role. Events 618 - Coronation of the Chinese governor Li Yuan as Emperor Gaozu of Tang, the new Emperor of China, initiating three centuries Year 1940 ( MCMXL) was a Leap year starting on Monday (link will display the full 1940 calendar of the Gregorian calendar. In July, No. 600 Squadron, by then based at RAF Manston, had some of its IFs equipped with AI Mk. RAF Manston was an RAF station in the north-east of Kent, at on the Isle of Thanet from 1916 until 1996 III radar. With this radar equipment, a Blenheim from FIU at RAF Ford achieved the first success on the night of 2/3 July 1940, accounting for a Dornier Do 17 bomber. Events 324 - Battle of Adrianople Constantine I defeats Licinius, who flees to Byzantium. Year 1940 ( MCMXL) was a Leap year starting on Monday (link will display the full 1940 calendar of the Gregorian calendar. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout More successes came and, before long, the Blenheim was to prove invaluable in the night fighter role. Gradually, with the introduction of the Bristol Beaufighter in 1940-1941, its role was supplanted by its faster, better armed progeny. The Bristol Beaufighter is also the name of a Car produced by Bristol Cars in the 1980s

Eastern service

Blenheims continued to operate widely in many combat roles until about 1943, equipping RAF squadrons in the UK and in British bases in Egypt, Iraq, Aden, India, Malaya, Singapore and Dutch East Indies. This article is about the country of Egypt For a topic outline on this subject see List of basic Egypt topics. For a topic outline on this subject see List of basic Iraq topics. Aden (ˈeɪdən Arabic: عدن) is a city in Yemen, 170 kilometers east of Bab-el-Mandeb. India, officially the Republic of India (भारत गणराज्य inc-Latn Bhārat Gaṇarājya; see also other Indian languages) is a country British Malaya loosely described a set of states on the Malay Peninsula that were colonized by the British from the 18th and the 19th until the 20th century Singapore See http//enwikipediaorg/wiki/WikipediaFootnotes for an explanation of how to generate footnotes using the tags and the template below Many Blenheims were lost to Japanese fighters during the Malayan campaign and battles for Singapore and Sumatra. The Empire of Japan ( {{unicode|Kyūjitai}}: ja 大日本帝國 Shinjitai: ja 大日本帝国 pronounced Dai Nippon Teikoku The Battle of Malaya was a campaign fought by Allied and Japanese forces in Malaya, from December 8 1941 to January 31 The Battle of Singapore was fought in the South-East Asian theatre of World War II when the Empire of Japan invaded the Allied stronghold The Battle of Palembang was a battle of the Pacific theatre of World War II. By that point, most fighters could carry similar bombloads at much higher speeds and the surviving examples were relegated to training duties. Bristol's intended successor to the Blenheim, the Buckingham, was considered inferior to the Mosquito, and did not see combat. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout

The final ground attack version - the Mk. V - first equipped 139 Squadron in June 1942. Eventually 13 squadrons - mainly in the Middle East and Far East - received this variant but operated them generally only for a few months. ^[4]

Bristol Blenheim BL-129 of Finnish Air Force LeLv 44

Finland

In 1936, the Finnish Air Force ordered 41 Mk. Is from Britain and two years later, they obtained a manufacturing license for the aircraft. Fifteen aircraft were constructed in Finland prior to the Winter War at the Valtion lentokonetehdas and a further 41 were constructed later on, bringing the total number up to 97 aircraft (75 Mk Is and 22 Mk IVs). The Winter War (Talvisota Советско-финляндская война - official Зимняя война - unofficial Vinterkriget began when the Valtion lentokonetehdas ( State aircraft factory was a Finnish aircraft manufacturing company that was founded on 23 February 1928 from the IVL or I The Finns obtained large supplies of ex-Yugoslavian spares from the Germans during the war.

The Finnish Blenheims flew 423 bombing missions during the Winter War, and some further 3,000 bombing missions during the Continuation War. The Continuation War (Jatkosota Fortsättningskriget Советско-финская война ( 25 June 1941 &ndash 19 September 1944) Blenheim machine gunners also shot down five Soviet fighters. Half of the Blenheims were lost to all causes during the wars.

After the war, Finland was prohibited to fly bomber aircraft. However, some of the Finnish Blenheims continued in service as target tows until 1958.

Operators

Bolingbroke IVT in the Commonwealth Air Training Plan Museum, Brandon, Manitoba

Main article: List of Bristol Blenheim operators

Survivors

Bolingbroke in a Manitoba junk yard, 2006

There are currently no Blenheim or Bolingbroke aircraft that are airworthy. The following are units which operated the Bristol Blenheim: Operators; Royal Australian Air Force No For a topic outline on this subject see List of basic Australia topics. Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page The Independent State of Croatia ( Croatian: Nezavisna Država Hrvatska, NDH was a Puppet state of the Axis powers. Finland, officially the Republic of Finland ( is a Nordic country situated in the Fennoscandian region of northern Europe. This article is about the country For a topic outline on this subject see List of basic France topics. Greece (Ελλάδα transliterated: Elláda, historically, Ellás,) officially the Hellenic Republic (Ελληνική Δημοκρατία New Zealand is an Island country in the south-western Pacific Ocean comprising two main landmasses (the North Island and the South Island Portugal, officially the Portuguese Republic (República Portuguesa is a country on the Iberian Peninsula. Romania ( dated: Rumania, Roumania The Republic of South Africa (also known by other official names) is a country located at the southern tip of the continent of Africa Turkey (Türkiye known officially as the Republic of Turkey ( is a Eurasian Country that stretches The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom, the UK or Britain,is a Sovereign state located See also Kingdom of Yugoslavia, Socialist Federal Republic of Yugoslavia, Federal Republic of Yugoslavia Yugoslavia ( Serbo-Croatian 2008 ( MMVIII) is the current year in accordance with the Gregorian calendar, a Leap year that started on Tuesday of the Common Two examples of the type are owned by the Aircraft Restoration Company in Duxford, Cambridgeshire. Duxford is a village in Cambridgeshire, England, some ten miles south of Cambridge. History Cambridgeshire is noted as the site of some of the earliest known Neolithic permanent settlement in the United Kingdom, along with sites at Fengate The first airworthy Blenheim had been rebuilt from a scrapped Bolingbroke over a 12-year period, only to be destroyed within a month of completion. A replacement Bolingbroke Mk. IVT was rebuilt to flying status in just five years and painted to represent a Blenheim Mk. IV in RAF wartime service. It began appearing at air shows and exhibitions in the UK, flying since May 1993 and was used in the 1995 film version of Shakespeare's Richard III. William Shakespeare ( baptised Richard III is a 1995 film adaptation of William Shakespeare 's play of the same name, starring Sir Ian McKellen, This aircraft crashed on landing 18 August 2004, and is presently undergoing an extensive repair. Events 293 BC - The oldest known Roman temple to Venus is founded starting the institution of Vinalia Rustica. "MMIV" redirects here For the Modest Mouse album see " Baron von Bullshit Rides Again "

In Canada, a number of other Bolingbrokes survived the war but were summarily consigned to the scrap heap. Postwar, enterprising farmers often bought surplus aircraft such as these for the scrap metal content, tires for farm implements, and even for the fuel remaining in the tanks. Some surviving examples in Canada of the Bolingbroke can be traced back to this period. The Canadian Warplane Heritage Museum in Hamilton, Ontario has been rebuilding a Bolingbroke to what is hoped to be airworthy status. See also List of attractions in Hamilton Ontario The Canadian Warplane Heritage Museum is a major Canadian aviation museum Ontario (ɒnˈtɛrioʊ is a province located in the central part of Canada, the largest by population and second largest after Quebec The Commonwealth Air Training Plan Museum in Brandon, Manitoba has restored the exterior of one Bolingbroke, painting it in the Air Training Plan yellow color. The Commonwealth Air Training Plan Museum is located at the Brandon Municipal Airport in Brandon Manitoba. Manitoba (English ˌmænɨˈtoʊbə French /manitoba/ is a province of Canada, spanning 647797 square kilometres (250116  sq mi of North America This particular aircraft is on display at a location (49°53′14.39″N 99°56′58.55″W / 49.8873306, -99.9495972) on the Trans-Canada Highway in Brandon. The Trans-Canada Highway is a federal-provincial Highway system that joins all ten provinces of Canada.

In Finland, the sole surviving original Blenheim in the world, a Mk. IV registered as BL-200 of the Finnish Air Force, is stored for restoration in the Aviation Museum of Central Finland. The Aviation Museum of Central Finland is an aviation museum in Tikkakoski, Jyväskylän maalaiskunta, Finland. A project is underway to build a room for a public exhibition for this aircraft. ^[5][6]

In Greece a Bristol Blenheim Mk. IVF was recovered from the sea and moved to the Hellenic Air Force Museum for restoration. The Hellenic Air Force Museum was founded in 1986 and since 1992 it is located on the Decelea Airfield

Specifications (Bristol Blenheim Mk I & IV)

Orthographic projection of the Blenheim Mk. I(F), with profiles showing the Mk. IV and Mk. V variants.

Data from British Warplanes of World War II ^[7]

General characteristics

• Crew: 3
• Length: 42 ft 7 in (12. 98 m)
• Wingspan: 56 ft 4 in (17. The wingspan (or just span) of an airplane or a Bird, is the distance from the left wingtip to the right wingtip 17 m)
• Height: 9 ft 10 in (3. 0 m)
• Wing area: 469 ft² (43. 6 m²)
• Empty weight: 9,790 lb (4,450 kg)
• Loaded weight: 14,400 lb (6,545 kg)
• Powerplant: 2× Bristol Mercury XV radial engine, 920 hp (690 kW) each
• Propellers: Three-bladed Hamilton Standard propeller

Performance

• Maximum speed: 266 mph (231 knots, 428 km/h)
• Range: 1,460 mi (1,270 NM, 2,351 km)
• Service ceiling 27,260 ft (8,310 m)
• Rate of climb: 1,500 ft/min (7. WikipediaWikiProject Aircraft. Please see WikipediaWikiProject Aircraft/page content for recommended layout The radial engine is a reciprocating type internal combustion Engine configuration in which the cylinders point outward from a central Hamilton Standard, a famous Aircraft Propeller parts supplier was formed in 1929 when United Aircraft & Transport Corporation consolidated Hamilton Aero Manufacturing In Aviation, V-speeds or Velocity-speeds are standard terms used to define Airspeeds important or useful to the operation of Aircraft, such The maximal total range is the distance an Aircraft can fly between Takeoff and Landing, as limited by fuel capacity in powered aircraft or cross-country In Aeronautics, a ceiling is the maximum Density altitude an aircraft can reach under a set of conditions In Aerodynamics, the rate of climb RoC is the speed at which an Aircraft increases its Altitude. 6 m/s)
• Wing loading: 30. In Aerodynamics, wing loading is the loaded weight of the aircraft divided by the area of the wing 7 lb/ft² (150 kg/m²)
• Power/mass: 0. Power-to-weight ratio (specific power is a calculation commonly applied to Engines and other mobile power sources to enable the comparison of one unit or design to another 13 hp/lb (0. 21 kW/kg)

Armament

• Guns:
  
  • 1× . 303 in (7. 7 mm) Browning machine gun in port wing
  • 1 or 2× . The Browning M1919 is a.30 caliber Medium machine gun family widely used during the 20th century 303 in Browning guns in rear-firing under-nose blister or Nash & Thomson FN. Nash & Thomson was a British engineering firm that specialised in the production of hydraulically-operated Gun turrets for aircraft 54 turret
  • 2× . 303 in Browning guns in dorsal turret
• Bombs:
  
  • 4× 250 lb (110 kg) bombs or
  • 2× 500 lb (230 kg) bombs internally, and
  • 8× 40 lb (18 kg) bombs externally

See also

Related development

• Bristol Beaufort
• Bristol Beaufighter
  

Comparable aircraft

• Douglas DB-7
• Dornier Do 17
• Heinkel He 111
• LeO 451
• Martin Maryland
• Potez 630
• PZL P.37
• Tupolev SB
  

Related lists

• List of aircraft of the RAF
• List of bomber aircraft
  

References

Notes

Bibliography

External links

• RAF Bristol Blenheim history
• A history of No. 211 Squadron RAF in two world wars
• Blenheim Society
• Finnish Mk IV Blenheim restoration (more than 600 pictures linked)