Lakes Water Bird

The Lakes Water Bird, sometimes known as the Avro Curtiss type is remembered as the first consistently successful British seaplane, developed by the Windemere-based Lakes Flying Co, during 1911.

Background

Large bodies of water appealed to several aviation pioneers in the first two decades of the 20th century since they offered large spaces for takeoff and emergency landings. Builders also anticipated naval interest. It emerged that one of the main problems was getting the floats to leave the water, that is to "unstick". The first seaplane to fly, on 28 March 1910 at Martigues, France was built by Henri Fabre, though the machine built by Glenn Curtiss and first flown on 26 January 1911 was the first practical seaplane. In England A.V.Roe & Co had put the first Type D on floats^[1] and it left the water on 18 November 1911 at Barrow-in-Furness using stepped floats, but dropped back into the water and was damaged. It flew successfully in April 1912, although it was underpowered.

Development

The Lakes Water Bird was built for 1911 E.W. Wakefield, of the Lakes Flying School, Windermere by A.V. Roe, who would build aircraft to the designs of individual customers. It was built as a landplane with the intention of converting it to a seaplane once testing was complete. Wakefield had been interested in waterborne aircraft since 1909 and had performed experiments with different float designs towed at speed across Lake Windermere. Unsticking problems persisted until he visited Henri Fabre in France and got useful advice on float design. The 12 ft (3.66 m) long float for the Water Bird followed Glen Curtiss' float and was built by boat builders Borwick of Bowness-on-Windermere using mahogany reinforced with metal strips and canvas.^[2][3]

Avro built the aircraft in Manchester, transporting it to Brooklands for its first flight on 19 May 1911. It was a two-bay sngle-seat pusher biplane with wings of unequal span. The outer half of each upper wing carried a pair of ailerons; the larger inner one had a semicircular trailing edge extending well behind the wing trailing edge. Bamboo outriggers fore and aft of the wings supported leading elevators and tail surfaces plus rudder. Both elevator and rudder were operated by bamboo pushrods. Power was provided by a 50 hp (37 kW) Gnome Omega seven-cylinder rotary engine driving an 8 ft 6in (2.59 m) propeller.^[2][3]

After testing as a landplane at Brooklands in May 1911, the Water Bird was brought to the Hill of Oaks on Windermere and the float fitted in place of the wheeled undercarriage. A pair of cylindrical floats was mounted below the wingtips for lateral stability on the water. The successful first flight was on 25 November 1911, with ex-Avro school pilot H. Stanley Adams.^[2][3]

Operational history

Water Bird flew intensively during December 1911 and January 1912, logging some 60 flights. The longest was for 20 miles, reaching 800 ft. In March 1912 Water Bird was destroyed in its lakeside hangar by a storm. Remnants of the aircraft (float, rudder and tailplane) survived until at least 1961.^[2][3]

Water Bird was succeeded by the Lakes-built Water Hen, their first complete product. It was initially almost identical to its predecessor apart from straight-edged ailerons. Larger, later modifications removed much of the similarity between the two aircraft, the later Water Hen having a much wider central float.^[4][5]

Specifications

Data from Jackson 1965, p. 34

General characteristics

• Crew: one
• Capacity: one
• Length: 36 ft 5 in (11.10 m)
• Wingspan: 41 ft 0 in (12.50 m)
• Wing area: 365 ft² (33.9 m²)
• Empty weight: 780 lb (354 kg)
• Gross weight: 1,130 lb (513 kg)
• Powerplant: 1 × Gnome Omega 7-cylinder rotary, 50 hp (37 kW)

Performance

• Maximum speed: 45 mph (72 km/h)
• Service ceiling: 800 ft (244 m)

References

Notes

Bibliography

• Jackson, A.J. (1965). "Avro Aircraft since 1908". London: Putnam Publishing. 
• "The Water Hen.". Flight. No. 7 December 1912. pp. 1133–7.