A.Jackson Avro Aircraft since 1908 (Putnam)
Avro Type 519
The Avro Type 519 appears to have been a contemporary of the Grahame-White Type 18 and, like that aeroplane, very little is known about it. By a process of elimination, it seems certain that the Type 519 was intended as a possible bomber, and was evidently an attempt to adapt the Avro Type 510 'Round Britain' racing seaplane of 1914 for military consideration. (Although the 1914 race had been cancelled on the outbreak of war, the Admiralty had purchased the prototype and five further examples.)
The Type 519 retained the earlier aircraft's 150hp Sunbeam Nubian watercooled engine as well as similar two-bay wings of unequal span. The fuselage was generally similar, but was faired to incorporate curved upper decking and raised headrest fairings aft of the cockpits. The wheel-and-skid undercarriage with oleo struts was reminiscent of that on the Avro 504. In order to meet naval storage requirements, provision was made to fold the wings.
The design drawings, prepared by Roy Chadwick and H E Broadsmith, met with interest at the Admiralty and War Office to the extent that Avro received orders for four aircraft - two single-seat Type 519s for the RNAS and two two-seat Type 519As for the RFC; the latter featured fixed wings and a plain V-strut undercarriage without the central skid.
All four aircraft are believed to have been delivered to Farnborough by May 1916 for trials, but it is said that they did not meet the Service strength requirements with the Nubian engine, and their ultimate fate is not known.
Type: Single-engine, single- and two-seat, two-bay biplane (probably intended as experimental bomber).
Manufacturer: A Y Roe & Co Ltd, Miles Platting, Manchester.
Powerplant: One 150hp Sunbeam Nubian eight-cylinder, water-cooled, in-line engine driving two-blade propeller.
Dimensions: Span (Type 510), 63ft 0in.
Performance: Max speed, approx 76 mph at sea level.
Armament: No gun armament; provision for bomb load, unknown.
Prototypes: Four; two Type 519s for Admiralty, Nos 8440 and 8441, and two Type 519As for War Office, Nos 1614 and 1615.
P.Lewis British Bomber since 1914 (Putnam)
One of the designs of indeterminate purpose but of appearance strongly suggestive of being intended as a bomber was the Avro Type 519 biplane of early 1916. Two prototypes - 1614 and 1615 - were ordered for the R.F.C. and a further pair - 8440 and 8441 - for the R.N.A.S. Unequal-span, two-bay, unstaggered wings were mated to a normal style of fuselage with two cockpits in tandem. Mounted in the nose was the 150 h.p. Sunbeam Nubian, and aft of the cockpits - which were set well back and embedded in the deep curved decking - there was a large curved fin. The pilot’s view was not assisted by the bulky radiator installed above and to the rear of the Nubian. 8441 appeared as a folding-wing single-seater flown from the rear cockpit, that at the front being faired over, and a typical Avro-style single skid was incorporated in the undercarriage. The Type 519 was singularly undistinguished in appearance, and no progress was made with the design beyond the prototype stage.
M.Goodall, A.Tagg British Aircraft before the Great War (Schiffer)
Deleted by request of (c)Schiffer Publishing
J.Bruce British Aeroplanes 1914-1918 (Putnam)
THE Avro 519 was a large and rather clumsy biplane which appeared to have the same wing structure as the Avro 510 seaplane. As on the Type 510, the 150 h.p. Sunbeam Nubian engine was fitted, but whereas the seaplane had a frontal radiator the Type 519 had a box-like radiator above and behind the engine.
The structure of the Avro 519 appeared to be quite conventional. The fuselage was characterised by an unusually deep top-decking, in addition to which the cockpits had peculiar windshield and head-rest fairings fitted fore and aft. A plain, sturdy vee undercarriage was used.
The tail unit incorporated a large fin of the shape associated with Avros built for the R.N.A.S. Prototypes were supplied to both the R.N.A.S. and R.F.C., however: four were ordered, the first two (8440 and 8441) going to the R.N.A.S., the second pair (1614 and 1615) to the R.F.C. The illustrations show No. 1614, which in May, 1916, was at Farnborough for tests. There it was known as “The Big Avro".
The aircraft’s designed purpose is uncertain, but it had the appearance of being intended for use as a bomber. Performance could not have been good on only 150 h.p., however, and the deep cockpit coamings would have made it difficult to use defensive armament effectively. The fate of the prototypes is not known, but the Type 519 was not developed.
Manufacturers: A. V. Roe & Co., Ltd., Clifton Street, Miles Platting, Manchester.
Power: 150 h.p. Sunbeam Nubian.
Serial Numbers: 1614-1615; 8440-8441.
O.Thetford British Naval Aircraft since 1912 (Putnam)
Two only (Nos.8440 and 8441) supplied to the RNAS in 1916. So far as is known, the type saw no operational service. Originally built as a two-seater, a single-seat version (No.8441) is illustrated: it had folding wings. One 150 hp Sunbeam Nubian engine.