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Aviation History
1926
1926 - 0917.PDF
DECEMBER 2, 1926 apparently somewhat after the style of the Imber self-sealingtank. This tank has a capacity of 400 kg. A gravity tank holding 174 kg. is placed in the top centre section. This•quantity of fuel suffices for a flight of five hours' duration at full throttle. The armament consists of one fixed Vickersgun, and two Lewis guns on the usual gun ring. The wings .are of Duralumin construction. The Vojenska S. 18 is a school machine with 60 h.p.Walter Engine. Following arc the main characteristics of the VojenskaS.16 : Wing span, 15-5 m. ; length overall, 9-2 m. ; wing area, 47 sq. m. ; weight, empty, 1,200 kg. ; load, 1,050 kg.(military load, 448 kg.) ; total loaded weight, 2,250 kg. Top speed at ground level, 225 km./h. ; speed at 5,000 m.,194 km./h. ; service ceiling, 6,500 m. ; range, 1,237 kms. The Vojenska 5.18 is a school machine fitted with 60 h.p.Walter radial air-cooled engine. It is, as distinct from the S.16, of wood construction. The biplane wings are of normalform and construction, and the fuselage is of the plywood- covered box type. The wing bracing is a little unorthodoxin that on each side a pair of Vee struts run from the bottom front spar root to points on both top spars. Thus the usualrear inner interplane strut is missing. The top plane, incidentally, is in one piece and has no dihedral. The petroltank, with sufficient petrol for 2\ hours, is housed in the top plane, giving direct gravity feed. It is understoodthat although this is a school machine, it has been built with sufficiently high factors of safety to permit of its beingstunted in ever ' way. Characteristics of the 5.18.—Wing span, 10 m. ; lengthoverall, 6-682 m. ; wing area, 17 sq. m. ; weight, empty, 254 kg. ; fuel, 40 kg. ; crew, 160 kg. ; total loaded weight,554 kg. Speed at ground level, 140 km./h. ; landing speed, 68 km./h. ; climb to 1,000 m. in 6 mins. ; Service ceiling,3,500 m. The Vojenska 5.20 is a single-seater fighter fitted with a300 h.p. Hispano-Suiza engine. The wing design and con- struction are normal, the machine having a top plane ofslightly greater span and chord than the bottom, in order to improve the visibility. Wood construction is employedin the wings, and ailerons are fitted to the lower wing only. The Vojenska S. 20 single-seater fighter with 300 h.p.Skoda-Hispano. The fuselage is of steel-tube construction, specially designed to facilitate repairs. The engine bearer is of steel tube and Duralumin, and supports a Skoda-built Hispano-Suiza of 320 h.p. at 1,800 r.p.m. The petrol tank, with a capacity of 215 litres, or sufficient for 2J hours, is contained inside the fuselage. The tank is protected by a rubber jacket. A service tank in the top plane has a capacity of 35 litres, •or sufficient for 22 minutes at full throttle. Two Vickers guns lie above the engine, and are fired from the control stick.The S.20 is also equipped with a Heineke parachute. The Lamblin radiators are fitted to the undercarriage legs.Characteristics of the Vojenska S.20.—Span, upper plane, 9-7 m. ; lower plane, 8-2 m. ; length overall, 7-441 m. :wing area, 18-4 sq. m. ; weight, empty, 728 kgs, ; useful load, 145 kgs. ; fuel, 175 kgs. ; total loaded weight, 1,048 kgs.Speed at ground level, 257 km. h. ; speed at 2,000 m., 261 km./h. ; climb to 1,000 m. in 1 -5 mins. ; to 5,000 m in13-8 mins. VILLIERS THE exhibit of the Francois Villiers Company will consistof a Villiers type II naval two-seater fighter aeroplane (avion mar in), with 450 h.p. Lorraine-Dietrich engine, and of a Vil-liers type V two-seater night fighter, also with 450 h.p. Lorraine-Dietrich engine. The Villiers Type II Naval Two-Seater Fighter.—The Villierstype II naval two-seater fighter was specially designed for fighting heavy flying-boats with the advantage of incor-porating the features of a landplanc but having at the same time the ability of alighting safely on water. In other words,the Villiers II is a " seagoing aeroplane," which is particularly adapted to use on board aircraft carriers. The fuselage is of the water-tight type, being constructedon the lines of a flying-boat hull, with timber framing. The wings, which are also timber-framed, are of the sesquiplanetype, with Vee interplane struts. The bottom wing, which is mounted midway up the fuselage depth, carries wing tip The Villiers Type II, 450 h.p. Lorraine, is a landplanecapable of floating after a descent on the sea. It then has to be hoisted on board a vessel. floats. The undercarriage may be dropped by the pilot foralighting on the sea. For landing on the deck of aircraft carriers, the machine incorporates an arresting gear whichengages with the transverse wires of the deck. The petrol tank is equipped with an instantaneous emptyingdevice, which is operated by carbonic acid contained in a bottle. The armament consists of two synchronised Vickers gunsand two Lewis guns on ring mounts. Specification.—Engine, 450 h.p. Lorraine-Dietrich ; span,13-00 m. ; length, 9-46 m. ; height, 3-68 m. ; wing area, 40 sq. m. ; weight, empty, 1,565 kg. ; fuel load, 235 kg. ;useful load, 250 kg. ; weight, loaded, 2,050 kg. ; maximum speed, sea level, 218 km.p.h. ; speed at 5,000 m. altitude, 202km.p.h. ; speed at 6,000 m. altitude, 196 km.p.h. ; climb to 6,000 m. altitude, 29 mins. ; theoretical ceiling, 6,250 m. The Villiers Type V Two-Seater Night Fighter.—The Villierstype V Two-Seater Night Fighter, fitted with the 450 h.p. Lorraine-Dietrich engine, is a single-bay biplane of timberconstruction. The wings are fabric-covered and the interplane struts are faired duralumin tubes, which are fitted with anadjusting device for length. The cabane struts, of the diverging (outward sloping) type, are steel tubes. Thefuselage is built along the lines of the Villiers type II, that is, with a water-tight hull arrangement. The engine bearers areduralumin box girders. Radiators arc of the Lamblin 1925 type. The petrol tank may be jettisoned in flight. Theundercarriage is rubber sprung. The armament consists of two fixed Vickers gun and twoflexible Lewis guns. The equipment includes a heating arrangement for the armament and the crew, landing flaresand searchlight, Michelin bomb release and wireless outfit. Specification.—Engine : 450 h.p. Lorraine-Dietrich. Span :12-00 m. Length: 8-750 m. Height: 3-300 m. Wing area : 40 sq. m. Weight, empty : 1,274 kg. Useful load : 789
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