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rotate 90° sideways before retracting "flat" under the rear seat, resulting in a rather unusual seating position. This was only incorporated in early examples, later on, the wheel was fixed. Factory options offered to customers included whether the front seat should be equipped with flight instruments, and whether water ballast capacity should be installed.
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of the design, the wings were given a slight forward sweep. While many two-seat derivatives of single-seat sailplanes have fixed undercarriage, due to the added space restrictions created by the second seat, Grob devised a novel retraction system for the Twin Astir. The single wheel was designed to
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Production continued until around 1980, when it was replaced in production by the
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and has higher glide performance than most similar sailplanes of the time (e.g.
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Australian Air Force Cadets using the Twin Astir for gliding training. 2010
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The Twin was one of the first two-seat sailplanes built from
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operated 9 Grob G103 Twin Astir from 1975 until 1999
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176:that was developed in Germany in the 1970s by
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477:. London: MacDonald and Jane's. p. 61.
285:currently operates 2 Twin Astirs as of 2020
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494:
475:Jane's World Sailplanes and Motor Gliders
365:250 km/h (160 mph, 135 kn)
204:. The G 103a was in turn replaced by the
80:Learn how and when to remove this message
43:This article includes a list of general
459:. London: Studio Editions. p. 441.
411:
91:
435:Australian Air Force Cadets - Gliding
7:
468:. Shepperton: Ian Allan. p. 49.
180:as a counterpart to the single-seat
466:Gliders and Sailplanes of the World
329:17.8 m (191.6 sq ft)
317:17.5 m (57 ft 5 in)
49:it lacks sufficient corresponding
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323:1.60 m (5 ft 3 in)
311:8.1 m (26 ft 7 in)
268:
245:
100:
34:
457:Jane's Encyclopedia of Aviation
377:0.60 m/s (120 ft/min)
455:Taylor, Michael J. H. (1989).
1:
1029:Aircraft first flown in 1976
489:Homepage of Grob Aircraft AG
27:German two-seat glider, 1976
666:aircraft designation system
350:650 kg (1,435 lb)
283:Australian Air Force Cadets
200:but later redesignated the
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344:390 kg (860 lb)
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99:
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170:glass-reinforced plastic
109:G103 Twin Astir landing
1019:1970s German sailplanes
473:Coates, Andrew (1978).
464:Hardy, Michael (1982).
296:General characteristics
208:in production in 1989.
64:more precise citations.
240:
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166:Grob G 103 Twin Astir
663:Italian Armed Forces
369:Maximum glide ratio:
398:Grob G103c Twin III
393:Grob G103a Twin II
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260:Italian Air Force
217:Schleicher ASK 21
186:centre of gravity
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148:31 December 1976
95:G 103 Twin Astir
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437:. 1 January 2018
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178:Grob Aircraft AG
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119:Type of aircraft
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18:Grob Twin Astir
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363:Maximum speed:
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290:Specifications
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225:SZD-50 Puchacz
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375:Rate of sink:
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145:First flight
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139:Grob Aircraft
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135:Manufacturer
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70:December 2012
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439:. Retrieved
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334:Aspect ratio
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154:Number built
76:
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48:
356:Performance
182:G 102 Astir
62:introducing
1013:Categories
419:aeroflight
406:References
327:Wing area:
213:fibreglass
45:references
785:C-42/P-42
315:Wingspan:
276:Australia
231:Operators
174:sailplane
172:two-seat
117:Sailplane
946:401–2006
527:aircraft
441:20 April
382:See also
206:Twin III
130:Germany
978:KC-767B
973:KC-767A
875:201–400
814:101–200
321:Height:
309:Length:
194:Twin II
58:improve
998:T-2006
993:F-2000
988:P-1150
968:KC-707
611:GF 200
552:G 103c
547:G 103a
431:"AAFC"
273:
250:
202:G 103a
47:, but
983:C-900
963:E-550
958:H-500
953:H-412
937:T-346
932:T-345
927:T-339
922:C-319
917:T-260
912:H-249
907:C-228
902:C-222
897:H-212
892:U-208
887:H-206
882:H-205
866:A-200
861:C-180
856:H-169
851:U-166
846:H-139
841:C-130
836:H-129
831:H-109
826:G-103
821:H-101
674:1–100
621:G 850
616:G 520
606:G 180
601:G 140
592:G 120
587:G 118
582:G 116
577:G 115
572:G 112
567:G 110
562:G 109
557:G 104
542:G 103
537:G 102
303:Crew:
253:Italy
198:G 118
168:is a
114:Role
805:H-90
800:P-72
795:C-50
790:H-47
780:F-35
775:Q-27
770:C-27
765:Q-26
760:Q-25
755:Q-24
750:G-21
745:G-17
740:F-16
735:Q-12
730:Q-11
725:A-11
720:Q-10
710:AV-8
695:H-3F
691:H-3D
525:Grob
443:2020
338:17.1
227:).
223:and
164:The
158:291
715:Q-9
705:Q-7
700:G-4
686:G-2
681:Q-1
1015::
596:TP
433:.
371:38
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693:/
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305:2
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77:(
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68:(
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20:)
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