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Beardmore W.B.V

Страна: Великобритания

Год: 1918


Beardmore - W.B.IV - 1917 - Великобритания<– –>Beardmore - W.B.VI - 1918 - Великобритания

Jane's All The World Aircraft 1919

This machine was also designed as a ship single-seater fighter, and was of very much the same overall dimensions as the W.B.IV.
  Instead of placing the engine over the C.G. and driving the propeller by a shaft passing between the pilot's legs, and designing the fuselage to provide the necessary buoyancy for flotation after alighting on the sea, the. conventional engine in front arrangement was adopted, and the necessary buoyancy bad to be provided by external air bags.
Type of machine Biplane.
Name or type No. of machine W.B.V.
Purpose for which intended Ship's Scout.
Span 35 ft. 10 In.
Gap 4 ft. 9 in.
Overall length 26 ft. 7 in.
Maximum height 11 ft. 10 in.
Chord 6 ft. 3 In.
Total surface of wings,
  including ailerons 394 sq. ft.
Span of tail 11 ft. 9 in.
Total area of tail 50.5 sq.ft.
Area of elevators 24 sq. ft.
Area of rudder 12 sq.ft.
Area of fin 8 sq. ft.
Area of each aileron 18.8 sq. ft. each,
  total area 37.6 sq. ft. total.
Maximum cross section of body 11.5 sq. ft.
Horizontal area of body 46.5 sq. ft.
Vertical area of body 58 sq. ft.
Engine type and h.p. Hispano-Suiza 200 h.p
Airscrew, diam. and revs. 9 ft., 1,500 r.p.m.
Weight of machine empty 1,860 lbs.
Load per sq. ft. 6.33 lbs.
Weight per h.p. 12.5 lbs.
Tank capacity in hours 2.5 hours.
Tank capacity in gallons 37 gallons.
  Speed low down 112 m.p.h.
  Speed at 10,000 feet 103 m.p.h
  Landing speed 45 m.p.h.
   To 5.000 feet In minutes 6 minutes.
   To 10,000 feet in minutes 17 minutes.
Disposable load apart from fuel 340 lb
Total weight of machine loaded 2,500 lb

H.King Armament of British Aircraft (Putnam)

W.B. V. This contemporary of the W.B. IV had an armament of even greater - indeed exceptional interest, though the airframe engine layout was conventional. It was specifically designed for the French Hispano-Suiza canon Puteaux installation, of the type that became generically known as moteur canon. Although a 37-mm gun was actually installed in the first W.B. V, it found no acceptance among pilots, who were as cramped by its presence in the cockpit as they were disconcerted by the possibility of malfunctioning. French pilots using a similar installation in SPADs were said to become bemused by the explosive fumes. A fixed Vickers gun was therefore substituted, this being mounted on top of the fuselage with the breech casing faired. As secondary armament there was a free Lewis gun on a pylon mounting ahead of the cockpit and firing through an aperture in the centre-section.

P.Lewis The British Fighter since 1912 (Putnam)

The Beardmore W.B.V single-seat fighter biplane also used the 200 h.p. Hispano-Suiza but was built specifically to make use of the 37 mm. Puteaux shell-gun which fired its rounds through the centre of the propeller shaft. In other respects the machine was of normal two-bay tractor layout but misapprehension concerning the safety of the pilot with the Puteaux in action led to the heavy gun’s replacement by one forwards-firing Vickers and upwards-firing Lewis gun. Interest in the W.B.V finally petered out and development stopped.

F.Mason The British Fighter since 1912 (Putnam)

Beardmore W.B.V

  Designed and built at the same time as the W.B.IV, which it resembled more than superficially, the Beardmore W.B.V shipborne single-seat fighter also approximated to the naval requirements set out in Admiralty Specification N.1A, but additionally made provision to mount a French 37mm quick-firing Canon Puteaux - called for in an Appendix to the Specification.
  In the W.B.V the 200hp Hispano-Suiza engine was located conventionally in the nose of the aircraft with the barrel of the cannon lying in the vee between the cylinder banks; the gun’s muzzle projected forward into the hollow propeller shaft, and the breech extended aft into the pilot’s cockpit forward of the control column.
  Increased wing chord and slightly greater fin area in the tail was provided, but the large nose buoyancy chamber of the W.B.IV was omitted, the latter being to some extent offset by the provision of inflatable flotation bags which, when not inflated, lay flush along the underside of the lower wing leading edge. Folding wings and jettisonable undercarriage were included, as on the W.B.IV.
  Once more three prototypes, N41 - N43, were ordered and at least two were completed. However, during flight trials by RNAS pilots, it was considered extremely dangerous to attempt to load the Puteaux gun behind the control column while in flight - possibly in combat conditions. The naval pilots are said to have refused to expose themselves to such obvious risks, and the shell-firing gun was removed, being replaced by a Vickers and Lewis gun, as on the W.B.IV. Now bereft of its raison d’etre there was clearly no need to pursue further trials, and the W.B.V’s further development was halted. Its marginally improved performance had, after all, only been achieved by deleting the large nose buoyancy chamber.

  Type: Single-engine, single-seat two-bay shipborne fighting scout biplane.
  Manufacturer: William Beardmore & Co Ltd., Dalmuir, Dunbartonshire.
  Admiralty Specification: N.1A and Appendix.
  Powerplant: One 200hp Hispano-Suiza liquid-cooled engine driving two-blade propeller.
  Construction: As Beardmore W.B.IV but without nose buoyancy chamber; engine mounted conventionally in the nose.
  Dimensions: Span, 35ft 10in; length, 26ft 7in; height, 11ft 10in; wing area, 394 sq ft.
  Weights: Tare, 1,860lb; all-up, 2,500lb.
  Performance: Max speed, 112 mph at sea level; climb to 5,000 ft, 6 min; service ceiling, 14,000 ft; endurance, 2 1/2 hr.
  Armament: Initially armed with single 37mm Canon Puteaux firing through the propeller shaft; after removal it was replaced by a fixed 0.303in Vickers gun in the nose and a Lewis gun mounted to fire upwards through a cutout in the upper wing centre section.
  Prototypes: Three (N41-N43), of which N41 and N42 are known to have been completed (in 1917). No production.

W.Green, G.Swanborough The Complete Book of Fighters


  Developed in parallel with the W.B.IV, but of more conventional design, the W.B.V single-seat shipboard fighter was intended to carry a 37-mm Puteaux cannon between the cylinder blocks of its 200 hp Hispano-Suiza eight-cylinder water-cooled engine. It featured folding wings, a jettisonable undercarriage and inflatable flotation bags beneath the underside of the leading edge of the lower wing. Three prototypes of the W.B.V were ordered, the first of these flying on 3 December 1917, but the engine-mounted cannon was quickly removed and a more conventional armament mounted, this comprising a synchronised 0.303-in (7,7- mm) Vickers gun and a 0.303-in (7,7-mm) Lewis gun on a tripod ahead of the cockpit. The second prototype W.B.V was completed and flown in 1918, but further development was abandoned before the end of World War I.

Max speed, 112 mph (180 km/h) at sea level, 103 mph (166 km/h) at 10,000 ft (3 050 m).
Time to 5,000 ft (1525 m), 6.0 min.
Endurance, 2.5 hrs.
Empty weight, 1,860 lb (844 kg).
Loaded weight, 2,500 lb (1134 kg).
Span, 35 ft 10 in (10,92 m).
Length, 26 ft 7 in (8,10 m).
Height, 11 ft 10 in (3,61 m).
Wing area, 394 sqft (36,60 m2).

F.Mason - The British Fighter since 1912 /Putnam/
The second Beardmore W.B.V, N42, with a single Lewis gun in place of the 37mm cannon.
W.Green, G.Swanborough - The Complete Book of Fighters
Built in parallel with the W.B.IV, the Beardmore W.B.V was at first armed with a 37-mm Puteaux gun.
P.Lewis - The British Fighter since 1912 /Putnam/
Beardmore W.B.V shipboard fighter N42.