Hurricane Mk I Specifications
Crew: Pilot only
Powerplant: One 1,030 hp Rolls-Royce Merlin III twelve-cylinder liquid-cooled engine
Span: 40 ft 0 in (12.19 m)
Max Speed: 328 mph (529 km/h) at 20,000 ft (6,095 m)
Length: 31 ft 4 in (9.55 m)
Armament: Eight .303 in (7.7 mm) Browning machine guns mounted in wings
Image: Hawker Hurricane Mark I, P3408 ‘VY-K’, of No. 85 Squadron RAF based at Church Fenton, Yorkshire, in flight, October 1940.
Introduction
The Hawker Hurricane was a British single-seat fighter aircraft designed by Sydney Camm for Hawker Aircraft. Entering RAF service in December 1937 as Britain’s first operational monoplane fighter, it combined modern performance with a robust, practical design that proved highly effective in combat.
Although often overshadowed by the Supermarine Spitfire, the Hurricane became the backbone of RAF Fighter Command during the Battle of Britain. It equipped more RAF fighter squadrons than any other aircraft and accounted for approximately 55% of all enemy aircraft destroyed by Fighter Command during the campaign, making a decisive contribution to Britain’s victory.
Developed during a period of rapid advances in aviation technology, the Hurricane served in every major theatre of the Second World War. More than 14,500 were built, serving with the RAF and over thirty other nations, and today it is remembered as one of the most significant British fighter aircraft of the conflict.
Development and Design
The Hurricane was designed by Sydney Camm as Hawker Aircraft’s response to the Royal Air Force’s requirement for a modern high-speed monoplane fighter. Although revolutionary in appearance compared with the biplanes then serving with Fighter Command, the aircraft owed much to Hawker’s highly successful Fury. Both were built around an internal framework of wire-braced alloy and steel tube longerons, a structure renowned for its strength, simplicity and ease of repair. Hawker’s long-standing partnership with Rolls-Royce also ensured the new fighter benefited from the recently developed Merlin engine. Armed with eight .303 inch Browning machine guns and capable of speeds exceeding 300 mph, the Hurricane ranked among the world’s most advanced fighters when it entered RAF service.
The prototype, K5083, made its maiden flight on 6 November 1935 with Hawker’s chief test pilot, Flight Lieutenant George Bulman, at the controls. Initially flown without armament, it received an eight-gun wing during the summer of 1936 and first flew in this configuration on 17 August. The first production Hurricane, L1547, closely resembled the prototype but introduced the more powerful and reliable 1,030 hp Rolls-Royce Merlin II engine in place of K5083’s 1,025 hp Merlin “C”.
Production aircraft incorporated a number of refinements, including a strengthened canopy, simplified undercarriage doors, an aerial mast, and a larger rudder fitted with a trim tab and formation light. Landing lights were added to the wing leading edges, while Hurricanes built from February 1938 onwards received a ventral strake beneath the rear fuselage to improve recovery from high-speed spins. From mid-1938, the original “kidney” exhausts were replaced by more efficient ejector exhaust stubs, and in early 1939 a bulletproof windscreen became standard, significantly improving pilot protection.
The Hurricane’s layout reflected Hawker’s practical approach to fighter design. The forward fuselage housed the Merlin engine, an armour-plated firewall, reserve fuel tank and cockpit, while two 33-gallon self-sealing fuel tanks were mounted in the wing roots. Eight Browning machine guns were installed in two closely grouped banks of four within the wings, allowing them to fire outside the propeller arc. With most of the aircraft’s equipment concentrated in the forward fuselage, the fabric-covered steel-tube rear fuselage primarily supported the tail assembly, contributing to the Hurricane’s straightforward construction and ease of maintenance.
Entry Into RAF Service and the Second World War
The Hurricane entered RAF service in December 1937 with No. 111 Squadron at RAF Northolt, the first unit to receive a full complement of sixteen aircraft. As production gathered pace, it rapidly replaced the RAF’s ageing biplane fighters, becoming Britain’s first operational monoplane fighter. The initial production batch of 600 Hurricane Mk Is was built between October 1937 and 1939, by which time the type equipped the majority of Fighter Command’s front-line squadrons.
When the Second World War began in September 1939, Hurricanes accompanied the RAF bomber units deployed to France. Nos. 1 and 73 Squadrons served with the Advanced Air Striking Force, while Nos. 85 and 87 Squadrons formed part of the Air Component supporting the British Expeditionary Force. On 30 October 1939, a Hurricane of No. 1 Squadron claimed the RAF’s first fighter victory on the Western Front, and Flying Officer E. J. “Cobber” Kain of No. 73 Squadron became the RAF’s first fighter ace of the war.
From 10 May to 3 June 1940, Hurricane squadrons fought throughout the Battle of France, attempting to stem the German advance while providing air cover for Allied forces. The campaign proved costly. Between 19 May and 1 June alone, 119 Hurricanes were lost during operations against the German offensive. Despite these heavy losses, production rapidly replenished Fighter Command’s strength, ensuring sufficient Hurricanes were available for the defence of Britain only weeks later.
The Hurricane in the Battle of Britain
By the time the Battle of Britain began on 10 July 1940, production had more than compensated for the heavy losses suffered during the Battle of France. The Hurricane equipped 36 of Fighter Command’s front-line squadrons, compared with 19 equipped with the Supermarine Spitfire, making it the RAF’s most numerous fighter at the outbreak of the campaign.
Operating from airfields across Britain, Hurricane squadrons intercepted Luftwaffe raids directed against shipping, radar stations, airfields, aircraft factories and, later, London. Throughout the campaign they bore the brunt of the fighting, engaging both German bombers and their fighter escorts in almost daily combat.
Hurricane squadrons accounted for approximately 55% of all enemy aircraft destroyed by RAF Fighter Command during the Battle of Britain, claiming around 656 confirmed victories between July and October 1940. After allowing for the inevitable overclaiming that occurred during aerial combat, No. 303 (Polish) Squadron emerged as the most successful Hurricane unit with approximately 52 confirmed victories, followed by No. 501 Squadron with around 40. No. 501 Squadron also spent more days engaged in combat than any other Fighter Command unit—35 in total—but paid a heavy price, losing 41 Hurricanes during the campaign.
Strengths and Limitations
Although conceived several years before the Supermarine Spitfire, the Hurricane proved to be a highly capable fighter. While it could not match the Messerschmitt Bf 109 in maximum speed or rate of climb, it was exceptionally manoeuvrable and provided pilots with a remarkably stable gun platform. Its forgiving handling characteristics also made it well suited to the many inexperienced pilots who joined Fighter Command during the Battle of Britain.
The Hurricane’s greatest strength, however, lay in its rugged and practical design. Its robust construction enabled it to absorb considerable battle damage while remaining airworthy, and its conventional structure made it comparatively straightforward to maintain and repair. Damaged aircraft could often be returned to operational service far more quickly than the more complex Spitfire, an important advantage during the sustained fighting of 1940.
The aircraft was not without its shortcomings. The Hurricane’s traditional construction, with its fabric-covered rear fuselage, made it more susceptible to fire than the all-metal Spitfire once ablaze. This vulnerability was compounded by the location of the aircraft’s main fuel tank immediately ahead of the cockpit. A bullet striking the tank could rupture it, sending burning fuel into the cockpit and often inflicting severe burns on the pilot. The problem became so serious during the Battle of Britain that Air Chief Marshal Sir Hugh Dowding ordered the fuel tank to be lined with Linatex, a self-sealing natural rubber that expanded when exposed to fuel, sealing bullet holes and significantly reducing the risk of fire. Additional armour protection around the cockpit further improved pilot survivability as the campaign progressed.
The Hurricane Mk II
Development of the Hurricane continued throughout 1940 as Hawker sought to improve the aircraft’s performance and increase its operational versatility. The result was the Hurricane Mk II, powered by the 1,280 hp Rolls-Royce Merlin XX—a substantial increase over the 1,030 hp Merlin II fitted to the Hurricane Mk I. The new variant began entering RAF service during the closing stages of the Battle of Britain, marking the next stage in the Hurricane’s development.
The additional power of the Merlin XX required significant modifications to the airframe. The nose was lengthened by 4.5 inches (114 mm) to accommodate the larger engine and its revised installation, while a strengthened airframe was introduced to cope with the increased performance and provide greater scope for future development. The Merlin XX also featured a two-speed supercharger, improving performance across a wider range of altitudes and giving the Hurricane a noticeable improvement in climb and overall capability.
Although externally similar to its predecessor, the Hurricane Mk II was designed with future development in mind. The first aircraft delivered to RAF squadrons in September 1940 retained the familiar battery of eight .303 inch Browning machine guns, allowing the new fighter to enter service without disrupting frontline operations. As production continued, however, the strengthened wing enabled later variants to carry either twelve Browning machine guns or four 20 mm Hispano cannon, dramatically increasing the aircraft’s firepower. Fighter-bomber versions were subsequently developed that could carry bombs and, later, rocket projectiles, transforming the Hurricane from a dedicated interceptor into one of the RAF’s most versatile combat aircraft.
Only a small number of Hurricane Mk IIs reached operational squadrons before the Battle of Britain ended and they played little part in the outcome of the campaign. Nevertheless, the improvements introduced with the Mk II ensured the Hurricane remained an effective frontline aircraft, allowing the design to evolve well beyond its original role and continue serving with distinction throughout the remainder of the Second World War.
Legacy
Following the Battle of Britain, the Hurricane continued to serve with the RAF and Allied air forces throughout the Second World War. Successive variants introduced more powerful Merlin engines, heavier armament and fighter-bomber capabilities, enabling the aircraft to undertake a wide range of roles, including ground attack, convoy protection, night fighting and operations in North Africa, the Mediterranean, Burma and the Far East.
By the end of production, more than 14,500 Hurricanes had been built. The type served with over thirty nations during and after the war, remaining in frontline and second-line service long after more advanced fighters had replaced it with the RAF.
Although often overshadowed by the Supermarine Spitfire in popular memory, the Hurricane’s contribution to the Allied war effort was immense. Its rugged design, adaptability and outstanding combat record secured its place as one of the most significant British fighter aircraft of the Second World War.
Frequently Asked Questions
What was the Hawker Hurricane?
The Hawker Hurricane was a British single-seat monoplane fighter designed by Sydney Camm and introduced into Royal Air Force service in December 1937. It became the backbone of RAF Fighter Command during the Battle of Britain and remained in frontline service throughout much of the Second World War.
Why was the Hawker Hurricane so important during the Battle of Britain?
The Hurricane equipped more RAF Fighter Command squadrons than any other fighter during the Battle of Britain and destroyed more German aircraft than any other British fighter. It carried the greatest share of Britain’s air defence effort throughout the campaign.
How many enemy aircraft did the Hurricane destroy during the Battle of Britain?
Official post-war analysis credits Hurricane pilots with destroying approximately 656 German aircraft during the Battle of Britain—around 55% of all enemy aircraft destroyed by Fighter Command during the campaign.
How did the Hurricane compare with the Supermarine Spitfire?
The Hurricane was slightly slower than the Spitfire but was easier to manufacture, simpler to repair and equipped more RAF squadrons during the Battle of Britain. While Spitfires often engaged German fighter escorts, Hurricanes were frequently tasked with attacking the Luftwaffe’s bomber formations.
How did the Hurricane compare with the Messerschmitt Bf 109?
The Messerschmitt Bf 109 possessed advantages in speed, climb rate and high-altitude performance. The Hurricane, however, was a stable gun platform, had an excellent turning circle and was easier to repair after sustaining combat damage, making it a highly effective fighter in the hands of experienced pilots.
What engine powered the Hawker Hurricane?
Early production Hurricanes were powered by the Rolls-Royce Merlin II engine, while later variants introduced progressively more powerful Merlin engines, including the Merlin XX fitted to the Hurricane Mk II.
Why was the Hurricane so easy to repair?
Unlike many contemporary fighters, the Hurricane used a steel-tube framework with a fabric-covered rear fuselage. This practical construction allowed damaged aircraft to be repaired quickly, an important advantage during the Battle of Britain when maintaining squadron strength was critical.
Did the Hurricane serve after the Battle of Britain?
Yes. The Hurricane continued to serve throughout the Second World War in Europe, North Africa, the Mediterranean, Burma and the Far East. Later variants undertook a wide range of roles, including fighter-bomber, convoy escort and ground attack operations.
How many Hawker Hurricanes were built?
More than 14,500 Hurricanes were built during the Second World War, making it one of the most widely produced British fighter aircraft of the conflict.