Beardmore W.B.V

W.B.V
Role	Fighter
National origin	United Kingdom
Manufacturer	Beardmore
Designer	G Tilghman Richards
First flight	3 December 1917
Status	Prototype
Number built	2
Developed from	Beardmore W.B.IV

The Beardmore W.B.V was a prototype British single-engine shipborne biplane fighter of World War I developed by Beardmore.^[1] It was not successful, only two being completed.

Development and design

At the same time as developing the Beardmore W.B.IV, G Tilghman-Richards, the chief designer of Beardmore, designed a second aircraft to meet an Admiralty requirement for a ship-borne fighter aircraft to be armed with a 37 mm Le-Puteaux quick firing gun in order to destroy airships.^[2] The resulting aircraft, the W.B.V, was a single seater two-bay tractor biplane powered by a 200 hp (149 kW) Hispano-Suiza engine. The wings folded for storage onboard ship. The manually loaded Le-Puteaux gun was mounted between the cylinder banks of the V-8 engine, firing through a hollow propeller shaft. Unlike the W.B.V, the W.B.IV was not fitted with a buoyancy chamber, being instead fitted with inflatable flotation bags.^[3]

The first prototype flew on 3 December 1917.^[2] During testing, the Le Puteaux gun was considered dangerous by RNAS pilots, and the aircraft was re-armed with a more conventional synchronised Vickers machine gun together with a Lewis gun mounted on a tripod mounting.^[4] Development was abandoned shortly after the completion of a second prototype.

Specifications

Data from Jane's Fighting Aircraft of World War I.^[1]

General characteristics

• Crew: 1
• Length: 26 ft 7 in ( m)
• Wingspan: 35 ft 10 in ( m)
• Height: 11 ft 10 in ( m)
• Wing area: 394 ft² (36.6 m²)
• Empty weight: 1,860 lb (845 kg)
• Gross weight: 2,500 lb (1,136 kg)
• Powerplant: 1 × Hispano-Suiza 8, 200 hp (149 kW)

Performance

• Maximum speed: 112 mph (180 km/h)
• Stall speed: <45 mph ( km/h)
• Endurance: 2 hours  30 min
• Service ceiling: 14,000 ^[5] ft (4,270 m)

Armament

• One 37 mm Le Puteaux quick firing gun firing through the propellor shaft or One .303 in Vickers machine gun and one Lewis gun^[4]

See also

Related development

• Beardmore W.B.IV

Aircraft of comparable role, configuration and era

• SPAD S.XII

References

1. Taylor 1990, p.57.
2. Bruce 1965, p.74.
3. Mason 1992, pp.127-128.
4. Bruce 1965, p.76.
5. Mason 1992, p.128.

• Bruce, J.M. (1965). War Planes of the First World War: Volume 1 Fighters. London: Macdonald.
• Mason, Francis K (1992). The British Fighter since 1912. Annapolis, Maryland US: Naval Institute Press. ISBN 1-55750-082-7.
• Taylor, Michael J. H. (editor) (1990). Jane's Fighting Aircraft of World War I. London: Studio Editions. p. 57.