The Green Engine Co was a British engine company founded by Gustavus Green in Bexhill to sell engines of his design. He flourished especially as a designer of aeroplane engines during the first two decades of the 20th century. The engines were actually manufactured by the Aster Engineering Company.
The firm produced a range of water-cooled, mostly inline engines up to about 1915. Green engines powered many pioneering British aircraft, including those of A. V. Roe, Samuel Cody, and Short Brothers. They had several advanced features in common; cast steel single-piece cylinders and cylinder heads, two valves per cylinder driven by an overhead camshaft, white metal crankshaft bearings and copper and rubber-sealed water jackets. [1] [2] Manufacture was at the Aster Engineering Company of Wembley.
When the Great War broke out, the company was known for its motorcycle engines and particularly associated with a "pannier honeycomb" radiator design. [3] It was already involved in aero-engine design. In 1909, the C.4 had been the only motor to complete the tests for the Patrick Alexander Competition but was not awarded the £1,000 prize, because the rules called for a 35 hp (26 kW ) engine while the C.4 only averaged 31.5 hp (23.5 kW). [4] The competition was re-run the following year for more powerful engines: this time, Green gained the prize with the D.4. [5] Up to 1912 Green was the only source of all-British aircraft engines capable of producing 60 hp (45 kW ) and so the only choice when prizes were offered for all-British aircraft. The best known case is John Moore-Brabazon's winning the £1,000 Daily Mail prize for a circular 1 mi (0.87 nmi; 1.6 km) flight by a British pilot in an all-British aeroplane in his D.4-powered Short Biplane No. 2 in 1910. [1]
In 1914, the company was awarded a £5,000 prize by the Army Council in a Naval and Military Aeroplane Engine Competition [6] for their 100 hp (75 kW) water-cooled six-cylinder "Engine No. 1", which was judged to possess the highest number of attributes desirable in an aeroplane engine. [6] [7] It was designed to deliver maximum power at low speed and weighed 442 lb (200 kg).[ citation needed ]
Green continued to design motorcycle engines too, using cylinders similar to, though smaller than, those on their prize-winning aero-engine, having similar rubber-sealed copper jackets and removable overhead valve mechanisms designed to protect the cylinders from damage by broken valves, and forced lubrication throughout. [3] In 1914, Motor Cycle magazine reported on a Zenith motorcycle supplied with the 'new' 964 cc (58.8 cu in ) (8 hp (6 kW)) V-twin, of 85 mm (3.3 in) bore and stroke. One interesting detail seen on many modern motorcycles was 'the fitting of a glass window in the crank case to show the level of the oil'. [8]
Data from Gunston 1986 , p. 72 and Lumsden 1994 , pp. 154–6
Source:Goodall & Tagg 2001
35 hp inline C.4
60 hp inline D.4
100 hp inline E.4
35 hp inline C.4
Army Balloon Factory Beta I
80 hp V-8
Army Balloon Factory Gamma I (the first all-British airship)
The Defender II a 1909 racing boat owned by Fred May was powered by a 60 hp Green aeroplane engine. [15] In World War I, the well made, reliable but heavy (450 lbs or 204 kg) 82 hp Green inline engine was produced for fast boats rather than aircraft. [1]
The Monosoupape, was a rotary engine design first introduced in 1913 by Gnome Engine Company. It used a clever arrangement of internal transfer ports and a single pushrod-operated exhaust valve to replace the many moving parts found on more conventional rotary engines, and made the Monosoupape engines some of the most reliable of the era. British aircraft designer Thomas Sopwith described the Monosoupape as "one of the greatest single advances in aviation".
The Rolls-Royce Eagle was the first aircraft engine to be developed by Rolls-Royce Limited. Introduced in 1915 to meet British military requirements during World War I, it was used to power the Handley Page Type O bombers and a number of other military aircraft.
Blériot Aéronautique was a French aircraft manufacturer founded by Louis Blériot. It also made a few motorcycles between 1921 and 1922 and cyclecars during the 1920s.
The Clerget 9B was a nine-cylinder rotary aircraft engine of the World War I era designed by Pierre Clerget. Manufactured in both France and Great Britain, it was used on such aircraft as the Sopwith Camel. The Clerget 9Bf was an increased stroke version.
The Siddeley Tiger was an unsuccessful British aero engine developed shortly after the end of World War I by Siddeley-Deasy. Problems encountered during flight testing caused the project to be cancelled.
The Advance Motor Manufacturing Company was a British motorcycle and engine manufacturer established in 1905. As well as supplying aircraft engines to the pioneering monoplane developers, Advance engines were also used by Captain Robert Scott to power Antarctic snow sleds. After the end of the Second World War the company was sold to Sheepbridge Engineering and became a motor supplies organisation.
The ABC 8 hp is an 8 hp (6 kW) two-cylinder aero engine designed by the noted British engineer Granville Bradshaw for use in ultralight aircraft. The engine was derived from a specially tuned motorcycle unit and was built by ABC Motors, first running in 1923.
The de Havilland Ghost was a British V-8 aero engine that first ran in 1928.
The Beardmore 120 hp was a British six-cylinder, water-cooled aero engine that first ran in 1914, it was built by William Beardmore and Company as a licensed-built version of the Austro-Daimler 6. The engine featured cast iron cylinders and mild steel concave pistons. Produced between August 1914 and December 1918, the design powered many World War I aircraft types.
The Green C.4 was a British four-cylinder, water-cooled aero engine that first ran in 1908, it was designed by Gustavus Green and built by the Green Engine Co and Aster Engineering. The engine was one of two Green designs to win a government prize.
The Green E.6 was a British six-cylinder, water-cooled aero engine that first ran in 1911, it was designed by Gustavus Green and built by the Green Engine Co and Mirlees, Bickerton & Day of Stockport between August 1914 and December 1918.
Cecil Howard Pixton was a British aeronautical engineer, test pilot and air racing pilot who was most famous for winning the 1914 Schneider Trophy seaplane race.
The Green D.4 was a four-cylinder watercooled inline piston engine produced by the Green Engine Co in the UK in 1909. It produced about 60 hp (45 kW) and played an important role in the development of British aviation before World War I.
The de Havilland Iris was a British four-cylinder, liquid-cooled, horizontally opposed aero engine. Notable as the first aero engine to be designed by Geoffrey de Havilland it was produced in small numbers between 1909 and 1910 by Iris Cars Ltd of Willesden from which it took its name.
E.N.V. was an early manufacturer of aircraft engines, originally called the London and Parisian Motor Company their first model appearing in 1908. E.N.V. engines were used by several pioneer aircraft builders and were produced in both France and the UK until about 1914. They subsequently specialised in camshafts and bevel gear manufacture until 1968 when the name was lost.
The Salmson water-cooled aero-engines, produced in France by Société des Moteurs Salmson from 1908 until 1920, were a series of pioneering aero-engines: unusually combining water-cooling with the radial arrangement of their cylinders.
The Gnome 7 Omega is a French seven-cylinder, air-cooled aero engine produced by Gnome et Rhône. It was shown at the Paris Aero Salon held in December 1908 and was first flown in 1909. It was the world's first aviation rotary engine produced in quantity. Its introduction revolutionized the aviation industry and it was used by many early aircraft. It produced 37 kW (50 hp) from its 8 L (490 cu in) engine capacity. A Gnome Omega engine powers the 1912 Blackburn Monoplane, owned and operated by the Shuttleworth Collection, the oldest known airworthy British-designed aeroplane worldwide. A two-row version of the same engine was also produced, known as the Gnome 14 Omega-Omega or Gnome 100 hp. The prototype Omega engine still exists, and is on display at the United States' National Air and Space Museum.
The Gnome 7 Gamma was a French designed, seven-cylinder, air-cooled rotary aero engine. Powering several pre-World War I era aircraft types it produced 70 horsepower (52 kW) from its capacity of 12 litres.
The Cody Michelin Cup Biplane was an experimental aircraft designed and built in Britain during 1910 by Samuel Franklin Cody, a prominent showman and aviation pioneer. Cody had worked with the British Army on experiments with man-lifting kites and in October 1908 had successfully built and flown the British Army Aeroplane No 1, making the first officially verified powered flight in the United Kingdom. Cody broke the existing endurance record twice in the aircraft, the second flight, made on 31 December 1910, winning him the Michelin Cup for the longest-lasting flight made over a closed circuit in the United Kingdom before the end of the year.
The Boland V-8 was an aircraft engine that was developed by the Boland Brothers for use in their tailless aircraft. Between 1908 and 1914, four versions of this motor were produced ranging in power from 60 hp (45 kW) to 125 hp (93 kW). The Boland motors all used an unusual concentric overhead valve. This arrangement positioned the intake valve in the middle of the exhaust valve. These were actuated by a single push rod and rocker arm.