126:
were one such pair. There was also no EGS 31 production line; each example was custom built, incorporating improvements progressively. Each was known by a name given to it by its owner, often that of a sponsor using it as an advertisement. Neither the date nor name of the first example is known
121:
and a simplified structure. The name has sometimes led to confusion, for
Schneider's notation, ESG+(last two year digits), meant that separate types that appeared in the same year would have the same designation; the 16 m ESG 31 and the smaller and very different, 12.8 m (42 ft 0 in)
127:
for sure, though the
Wiesenberg seems to date from 1929 or 1930 (ESG 29 or 30). However, Schneider's catalogue of 1931 describes later developments like the ESG 31A and ESG 31B as improved EGS 31 Schlesierland single seater types. This is also the type name used by the Segelflyg Museum at
117:. The Professor had a span of 16.1 m (52 ft 10 in) and Schneider's ESG 31, as it is often known, was only just smaller at 16.0 m (52 ft 6 in). The two types had much in common, though Schneider's design was original, with a different airfoil,
166:
behind. The central third of the span is a rectangular panel, within which a diagonal sub spar runs rearwards from the main spar, with additional ply covering ahead of it. Originally there were no control surfaces on this inner panel, though in 1941
210:
are fabric covered with rounded trailing edges; the rudder extends down to the keel and operated between the elevators. There is a small, partly faired sprung tailskid immediately ahead of the rudder hinge line.
182:
All the
Schlesierland variants had a ply covered fuselage; most were hexagonal in cross-section, though that of the 1931 ESG 31B had a rounded, streamlined form. Early Schlesierlands had open
219:
Two
Weisebaudes were probably operated by the same club. The Frankenstein, which Hirth flew at the 1932 Rhön competition, was used by a police gliding club in Frankenstein, Silesia, now
578:
171:
were added across the junction between inner and outer panels, mounted behind the main spar. The outer panels taper strongly with sweep on both edges, ending in elliptical
571:
805:
479:
179:, which occupy about half the span and, at their inboard ends, about half the chord, are also tapered though less strongly than the wing.
810:
564:
451:
800:
194:. The wing pedestal slowly deceases in height rearwards above the fuselage, ending about halfway to the tail. The narrow, swept
198:
is mounted on top of the fuselage; on the later 1931 variants, the ESG 31A and B, the tailplane was braced to the top of the
519:
498:
729:
186:
and landed on a skid that reached from the nose to the lift strut attachment point but the 1931 Stanavo introduced a
754:
349:
269:
As
Weisenbaude. The next ESG 31, the Stanavo, had a landing wheel. Its cockpit, initially open, was later enclosed.
231:
for many years from 1933. On 12 August 1933, piloted by Edmund
Sparmann, it made the first glider crossing of the
220:
163:
202:. On all models except possibly the Commodore, this was ply covered and only about a third the height of the
653:
541:
674:
749:
744:
714:
693:
637:
632:
617:
123:
168:
669:
622:
207:
98:
57:
627:
602:
31:
475:
447:
131:
which currently holds the only surviving example, the ESG 31 Läkerolplanet delivered in 1933.
587:
147:
779:
774:
769:
764:
759:
739:
734:
724:
719:
698:
411:
203:
191:
151:
446:(2nd revised ed.). Königswinter: EQIP Werbung & Verlag GmbH. pp. 85–87.
291:
section but new, straight edged tail unit adding 400 mm (15.7 in) to length.
227:, possibly for their European representative, Jack O'Meara. Läkerolplanet operated in
794:
110:
685:
224:
187:
159:
109:
In 1928 or 1929, Edmund
Schneider wanted a glider that could compete with the 1928
128:
301:Ållebergs Segelflyg Museet, Falköping: ESG 31A Läkerolplanet, the only survivor.
248:
97:, 16 m (52 ft 6 in) span, one-off gliders, built by Schneider in
190:
aft of the skid. At some point it was fitted with a multi-transparency cockpit
244:
236:
232:
139:
118:
556:
195:
240:
176:
172:
143:
135:
358:
288:
263:
Two early examples, probably from 1929 and designated ESG 29 or ESG 30.
183:
155:
114:
94:
46:
228:
560:
199:
113:. It needed to be easy to build, safe to fly and capable of
549:. Vol. B. Leipzig: Herm. Beyer Verlag. p. 196.
223:. The Stanavo was sponsored by the German division of
707:
683:
662:
646:
595:
472:
Aviation
Museums and Collections of Mainland Europe
235:whilst flying the 25 km (16 mi) between
281:As ESG 31A but with a new, streamlined fuselage.
396:23:1 at 60 km/h (37 mph; 32 kn)
572:
474:. Air Britain (Historians) Ltd. p. 558.
88:
8:
134:The Schlesierland's wing is held above the
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493:
491:
437:
435:
433:
431:
429:
427:
465:
463:
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243:. The flight was sponsored by the firm
18:
150:. The wing is built around a single
142:on each side from the lower fuselage
138:on a pedestal and braced by a single
93:) was a representative of a group of
7:
247:. It belonged to S F K Chalmers and
708:Built by Edmund Schneider Australia
339:16.00 m (52 ft 6 in)
275:Revised tail with braced tailplane.
333:6.60 m (21 ft 8 in)
14:
345:16.3 m (175 sq ft)
313:Sailplanes 1920-1945 (2006) p. 86
596:Built by Edmund Schneider Grunau
158:covered ahead of it around the
16:German single-seat glider, 1929
85:Schneider ESG 31 Schlesierland
1:
806:Aircraft first flown in 1929
520:"Schneider Grunau Commodore"
101:from 1929 to at least 1931.
740:ES 52B Longwing Kookaburra
827:
499:"Schneider ESG 31 Stanavo"
811:Edmund Schneider aircraft
684:Built by Schleicher post-
647:Built by Schneider Grunau
375:240 kg (529 lb)
369:150 kg (331 lb)
287:Same span, wing plan and
89:
21:
306:Specifications (ESG 31A)
801:1920s German sailplanes
543:Flugzeug-Typenbuch 1941
442:Simons, Martin (2006).
381:13.5 kg/m (2.8 lb/sqft)
318:General characteristics
540:Schneider, H. (1936).
105:Design and development
730:ES 50 Club Two-Seater
146:to about one quarter
22:ESG 31 Schlesierland
608:ESG 31 Schlesierland
444:Sailplanes 1920-1945
394:Maximum glide ratio:
266:ESG 31 Schlesierland
470:Ogden, Bob (2009).
296:Aircraft on display
215:Operational history
770:ES 60B Super Arrow
654:SG 38 Schulgleiter
623:Grunau 7 Moazagotl
206:. Both rudder and
56:Edmund Schneider,
788:
787:
481:978-0-85130-418-2
221:Ząbkowice Śląskie
81:
80:
818:
755:ES 57 Kingfisher
735:ES 52 Kookaburra
588:Edmund Schneider
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92:
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35:Type of aircraft
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826:
825:
821:
820:
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816:
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791:
790:
789:
784:
765:ES 60 Boomerang
725:ES 49B Kangaroo
703:
679:
658:
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603:ESG 29 Grunau 9
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412:List of gliders
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316:
308:
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204:balanced rudder
164:fabric covering
107:
72:
42:National origin
41:
36:
17:
12:
11:
5:
824:
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814:
813:
808:
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775:ES 65 Platypus
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38:
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28:
24:
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723:
721:
720:ES 49 Wallaby
718:
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663:Motor gliders
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639:
638:Grunau Baby 2
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634:
633:Grunau Baby 1
631:
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453:3-9806773-4-6
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406:Related lists
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379:Wing loading:
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373:Gross weight:
371:
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367:Empty weight:
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363:Göttingen 535
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115:tow launching
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111:RRG Professor
104:
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64:First flight
63:
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53:Manufacturer
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26:
25:
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686:World War II
612:
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523:. Retrieved
514:
502:. Retrieved
471:
443:
405:
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384:
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350:Aspect ratio
348:
342:
336:
330:
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317:
315:
310:
309:
225:Standard Oil
218:
181:
175:; the broad
160:leading edge
133:
108:
84:
82:
73:Number built
760:ES 59 Arrow
750:ES 56 Nymph
745:ES 54 Gnome
525:24 February
504:18 February
387:Performance
260:Wiesenbaude
251:Aero Club.
795:Categories
418:References
343:Wing area:
237:Copenhagen
140:lift strut
124:ESG31 Baby
77:Not known
675:Motorbaby
613:Commodore
337:Wingspan:
311:Data from
284:Commodore
208:elevators
196:tailplane
188:monowheel
169:airbrakes
129:Falköping
119:struttage
628:Grunau 8
618:Grunau 6
590:aircraft
401:See also
255:Variants
249:Göteborg
184:cockpits
177:ailerons
144:longeron
136:fuselage
30:Soaring
780:ES-Ka 6
359:Airfoil
331:Length:
289:airfoil
278:ESG 31B
272:ESG 31A
245:Läkerol
233:Öresund
162:, with
156:plywood
90:Silesia
47:Germany
715:Baby 4
694:Baby 3
478:
450:
229:Sweden
192:canopy
99:Grunau
95:German
58:Grunau
32:glider
699:ES 49
547:(PDF)
325:Crew:
241:Malmö
148:chord
122:span
67:1929
27:Role
670:SM 5
527:2014
506:2014
476:ISBN
448:ISBN
354:15.5
239:and
173:tips
154:and
152:spar
83:The
327:One
200:fin
797::
490:^
462:^
426:^
580:e
573:t
566:v
529:.
508:.
484:.
456:.
361::
352::
87:(
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