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provided lateral control. The wings were wire-braced from structures both above and below the fuselage frame, two transverse V-struts above, leaning together to form a pyramid and two below, joined to a longitudinal member that acted as a shock absorbing landing skid. The wires reached the outer part
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in only three weeks in the spring of 1912 and flight testing soon began. Initially, handling was poor but this was cured by stiffening the fuselage with extra wire bracing and by small changes to the vertical tail. It was launched in that year by two helpers, each with a separate rope and with
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Zalewski kicking the ground to take off from a hill. These flights only covered about 50 m (160 ft) at a height of 1 m (3.3 ft) in light winds, though distances increased in 1913 when it was launched by four or six assistants.
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carrying separate rudders, the upper one operated by the same hand-lever that controlled the wing-warping and the lower one by a rudder bar. Another hand-lever controlled the
127:'s designs to be built and flown, as the completion of the W.Z.I, a powered biplane designed in 1909 when Zalewski was only seventeen, was ended by political events.
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held below the wings by wires. With legs extended for take-off or landing, his feet reached well below the landing skid. The
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The very basic fuselage was just a horizontal, cross-braced wooden girder with the pilot strapped to the
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regained its independence in 1918, became a well-known designer of both aircraft and aircraft engines.
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It had a two-part wing of rectangular plan, apart from rounded tips. Each half-wing was a
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mounted on the main spar and extending both above and below the wing.
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142:and two auxiliary spars, one of them forming the
185:The W.Z.II was built in Zalewski's workshop at
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174:was of the cruciform type with vertical
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260:40 km/h (25 mph, 22 kn)
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299:. London: Putnam Publishing. p.
123:The Zalewski W.Z.II was the first of
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155:of each wing panel via a vertical
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233:2.0 m (6 ft 7 in)
227:7.5 m (24 ft 7 in)
221:4.8 m (15 ft 9 in)
239:9.5 m (102 sq ft)
266:1.7 m/s (330 ft/min)
379:Aircraft designed or built by
166:at mid-chord and sitting on a
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437:Aircraft first flown in 1912
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295:Polish Aircraft 1893-1939
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134:wooden structure with a
432:1910s Polish sailplanes
254:24 kg (53 lb)
206:General characteristics
119:Design and Development
103:designed and built in
291:Cynk, Jerzy (1971).
63:Władysław Zalewski
381:Władysław Zalewski
125:Władysław Zalewski
109:Władysław Zalewski
54:Władysław Zalewski
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332:"Zalewski W.Z.II"
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404:Powered aircraft
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32:Type of aircraft
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97:Zalewski W.Z.II
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39:National origin
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194:Specifications
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132:fabric covered
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27:Foot-launched
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310:0-370-00085-4
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264:Rate of sink:
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258:Cruise speed:
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252:Empty weight:
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138:at about mid-
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68:First flight
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50:Manufacturer
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335:. Retrieved
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244:Aspect ratio
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168:bicycle seat
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150:rather than
148:Wing-warping
144:leading edge
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85:Number built
111:who, after
107:in 1912 by
426:Categories
271:References
237:Wing area:
201:Cynk, 1971
337:7 January
225:Wingspan:
199:Data from
187:Milanówek
172:empennage
164:longerons
136:main spar
60:Designer
180:elevator
157:kingpost
152:ailerons
76:Retired
388:Gliders
231:Height:
219:Length:
19:W.Z.II
411:W.Z.XI
395:W.Z.II
307:
113:Poland
105:Poland
101:glider
44:Poland
29:glider
213:Crew:
140:chord
79:1913
71:1912
24:Role
339:2018
305:ISBN
301:83-5
176:fins
95:The
248:5.9
215:One
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319:^
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279:^
182:.
146:.
89:1
372:e
365:t
358:v
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246::
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