147:. In plan it tapered only slightly but the depth decreased rapidly towards the tail, making the fuselage behind the wing strongly wedge shaped. The wing was mounted on two extensions at the highest point, with an open, unscreened cockpit below its leading edge behind a more rounded nose. A pair short skids attached directly to the edges of the fuselage underside acted as the undercarriage, aided by a short tailskid at the rear.
129:
was first formed in 1921. It was, and is, a group of aeronautical students who design and construct aircraft as part of their studies and with the help and encouragement of their
University. One of the first of these students was the son of a Privy Councillor
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glider used the same method. As a result, the fabric covered, rectangular tailplane, mounted by its leading edge at the extreme tail, was without elevators. The similarly covered
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218:) glider meeting that August. It gained second place in the sink rate section, though overall a contemporary observer judged the earlier
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aft. The centre section, about half the total span, was straight edged and with a constant 1.41 m (4 ft 8 in)
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slope soaring for up to three hours, the
Darmstadt students were soon making similar long flights in both their aircraft.
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370:(2nd revised ed.). Königswinter: EQIP Werbung & Verlag GmbH. pp. 18, 21, 25–6.
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The
Geheimrat was a wood-framed aircraft with a rectangular cross section, flat sided,
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together almost formed a square, its trailing edge over the tailplane's front spar.
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397:"GERMAN GLIDERS THE RHĂ–N COMPETITION, 1922 Particulars of the Machines Entered"
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136:) and the group's sixth design, the D-6, was named in his honour.
405:. Vol. XIV, no. 38. 22 September 1922. pp. 547–8.
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The D-6 Geheimrat first flew in 1922 and competed in the
222:, a braced monoplane, more successful. Having seen the
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control surfaces. Unusually, the pilot did not alter
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314:11.8 kg/m (2.4 lb/sq ft)
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154:structure with ply covering from the
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299:175 kg (386 lb) in flight
263:12.10 m (39 ft 8 in)
293:98 kg (216 lb) structure
257:5.50 m (18 ft 1 in)
14:
269:14.8 m (159 sq ft)
127:Technical University of Darmstadt
92:Akaflieg Darmstadt D-6 Geheimrat
16:German single-seat glider, 1922
1:
150:The thick section wing was a
113:University students in 1922.
693:Aircraft first flown in 1922
190:in flight. The contemporary
109:wing, designed and built by
66:L. Hoffmann and F. Nicolaus
683:Akaflieg Darmstadt aircraft
98:, was an early competition
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425:Akaflieg Darmstadt website
123:Akademische Fliegergruppe
21:
224:Akaflieg Hannover Vampyr
192:Harth-Messerschmitt S.10
678:1920s German sailplanes
366:Simons, Martin (2006).
242:General characteristics
102:with a single seat and
96:Darmstadt D-6 Geheimrat
420:Göttingen 387 airfoil
132:
94:, often shortened to
368:Sailplanes 1920-1945
237:Sailplanes 1920-1945
220:Darmstadt D-4 Edith
206:Operational history
186:but by varying the
688:High-wing aircraft
461:Akaflieg Darmstadt
188:angle of incidence
174:which carried the
57:Akaflieg Darmstadt
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335:"Darmstadt D-19"
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35:Type of aircraft
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42:National origin
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22:D-6 Geheimrat
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297:Gross weight:
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291:Empty weight:
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71:First flight
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338:. Retrieved
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274:Aspect ratio
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160:leading edge
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80:Number built
30:Single seat
476:WĂĽrttemberg
305:Performance
216:Wasserkuppe
117:Development
672:Categories
340:18 January
321:References
267:Wing area:
152:cantilever
107:cantilever
469:Unpowered
261:Wingspan:
235:Data from
184:elevators
133:Geheimrat
63:Designer
481:Musterle
463:aircraft
145:fuselage
143:covered
605:Powered
283:Airfoil
255:Length:
158:to the
141:plywood
125:of the
47:Germany
402:Flight
374:
200:rudder
111:German
100:glider
32:glider
249:Crew:
182:with
180:pitch
168:chord
74:1922
27:Role
657:D-39
652:D-37
647:D-29
642:D-22
637:D-18
632:D-16
627:D-14
622:D-13
617:D-11
596:D-42
591:D-41
586:D-40
581:D-38
576:D-36
571:D-34
566:D-33
561:D-30
556:D-28
551:D-20
546:D-19
541:D-17
536:D-15
531:D-12
526:D-10
372:ISBN
342:2012
212:Rhön
198:and
176:roll
162:and
156:spar
121:The
104:high
90:The
612:D-5
521:D-9
516:D-8
511:D-7
506:D-6
501:D-4
496:D-3
491:D-2
486:D-1
278:9.9
196:fin
674::
399:.
386:^
350:^
84:1
453:e
446:t
439:v
380:.
344:.
285::
276::
251:1
214:(
130:(
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