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Concept
Sopwith Gunbus
Résumé
The Sopwith Gunbus was a British fighter aircraft of the First World War. It was a single-engined pusher biplane based on a floatplane built by Sopwith before the war for Greece. Small numbers were built and used by the British Royal Naval Air Service, mainly as a trainer.
In 1913 the Sopwith Aviation Company received an order for six two-seat floatplane from the Greek Government for the Greek Naval Air Service, which was in the process of being set up on the basis of advice from Rear Admiral Mark Kerr, the head of the British Naval Mission to Greece. Sopwith's design, known as the "Pusher Seaplane" or "Greek Seaplane" was a single-engined pusher biplane powered by a single 100 hp (75 kW) Anzani radial engine, with four-bay wings. It was fitted with dual controls for use as a trainer.
The first of the Greek Pusher Seaplanes flew in February 1914, successfully passing trials in March, with first deliveries in May and all six delivered by the outbreak of the First World War. Two more identical trainers were purchased by the Royal Naval Air Service, again for use as trainers, these being delivered in May. While the Greek machines performed well, despite the limited facilities available at their base at Eleusina, with at first no workshops or hangars available, the two British aircraft were less successful, with their engines proving unreliable, and were withdrawn by February 1915.
In March 1914, the Greeks placed an order for six more pusher seaplanes, the Sopwith S PG N, which were similar to their previous aircraft, but rather than being dual control trainers, were to be armed with a machine gun in the nose, and powered by a Gnome Monosoupape rotary engine. At least five of these aircraft were taken over by the Royal Navy at the outbreak of war, but again proved unsuccessful in British Service, with at least two being modified as landplanes. They remained in service until July 1915.
The Royal Navy ordered six modified landplane based on the S PG N in July 1914, the Sopwith Gunbus or Admiralty Type 806, to be powered by 110 hp (82 kW) Sunbeam water-cooled V8 engines and armed with a machine gun.
Source officielle
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