365:
29:
285:
170:. The lower wing was attached directly to the lower fuselage, from which the inner upper wing was braced with an outward leaning pair of parallel struts to the spars and held over the upper fuselage by a pair of inverted V-struts, one on each side, to the forward spar alone. The wings were straight-tapered in plan, with only a slight sweep on the
249:
Piloted by Raab, the
Schwalbe first flew on 16 January 1926. Numbers built are uncertain but have been estimated at forty-two or about fifty-eight. Engines apart, the unknown differences between the variants were small enough to allow several airframes to have been IAs, IBs and ICs over their
139:-based company that bears their name. They had previously worked at Dietrich Flugzeugwerke, a company which ran into financial problems in 1925. Their first design, known initially as the KL.1 Schwalbe, was a development of the
261:
meeting, then bettered it later in the month with a fifteen minute flight. He gave aerobatic demonstrations in his
Schwalbe during 1927-8 at several other European meetings including
241:, with its mainwheels on a split axle sprung by rubber cords to V-struts from the lower fuselage and stabilized centrally by a transverse V-strut. There was a short, steel tailskid.
257:
who was regarded as the best and most innovative aerobatic pilot of his day. In
September 1927 he claimed a world duration record for inverted flight in his Schwalbe KL.IC. at a
181:
The
Schwalbe's rectangular section fuselage had a steel tube structure and was fabric covered. The first examples, designated KL.IA, were powered by a 60 kW (80 hp)
790:
892:
897:
783:
907:
364:
73:
882:
836:
776:
115:(Swallow) was a German two-seat biplane produced in the 1920s. About fifty were built and the type became well known as an
887:
212:
of the lower wing and behind that of the upper wing, where there was a cut-out to increase the pilot's field of view.
178:
on both wings, externally connected with vertical rods. The upper ailerons had large balances to serve both surfaces.
196:
which left the cylinders projecting for cooling. Its fuel tank was within the upper wing and the oil tank behind a
159:
200:. Two later versions of the Schwalbe, designated KL.1B and KL.IC, were powered by a 82 kW (110 hp)
861:
856:
841:
831:
826:
821:
816:
140:
103:
851:
846:
223:
725:
701:
677:
653:
629:
605:
730:
706:
682:
658:
634:
610:
450:
309:
297:
201:
182:
768:
155:
116:
48:
762:
902:
758:
227:
197:
800:
254:
193:
167:
120:
37:
220:
753:
876:
209:
186:
132:
535:
28:
238:
171:
234:
large and balanced, reaching down to the keel and working in an elevator cut-out.
208:
was under the wing but it was flown solo from the rear cockpit which was over the
584:
333:
266:
262:
216:
154:
with thick sections, unequal span wooden wings which were built around twin
143:. Later, in a rationalisation of the company's naming system, it became the
560:
284:
258:
166:
and were braced between the spars with forward leaning, steel tube, N-form
368:
Raab-Katzenstein RK 1a
Schwalbe 3-view drawing from L'Air January 1, 1927
175:
174:, out to rounded tips. They also tapered in thickness. The Schwalbe had
205:
163:
151:
63:
329:
273:
253:
Several well known pilots used them as aerobatic aircraft, including
231:
136:
219:
was mounted on top of the fuselage and carried generous, curved and
363:
283:
190:
772:
119:, performing at many displays in the hands of pilots like
751:
Gerdessen, Frederik. "Estonian Air Power 1918 – 1945".
443:
100 L (22 imp gal; 26 US gal)
486:
70 km/h (43 mph, 38 kn) minimum speed
453:
7-cylinder radial, 60 kW (80 hp) nominal
288:Company catalogue advertising the KL.IA variant
784:
757:, No. 18, April – July 1982. pp. 61–76.
296:Original design with 60 kW (80 hp)
8:
791:
777:
769:
529:
527:
525:
523:
521:
519:
517:
579:
577:
272:One Schwalbe was on display at the 1928
702:"Picture caption - FLYING AT WAALHAVEN"
513:
492:500 km (310 mi, 270 nmi)
480:140 km/h (87 mph, 76 kn)
474:152 km/h (94 mph, 82 kn)
308:More powerful 82 kW (110 hp)
204:nine cylinder radial. The forward open
555:
553:
551:
549:
18:
504:9 min to 1,000 m (3,300 ft)
237:The Schwalbe had fixed, conventional
7:
726:"The Berlin International Aero Show"
135:and engineer Katzenstein formed the
893:1920s German civil trainer aircraft
74:Raab-Katzenstein-Flugzeugwerke GmbH
401:6.50 m (21 ft 4 in)
14:
419:2.60 m (8 ft 6 in)
534:Serryer, J (29 September 1927).
336:, which was established in 1935.
27:
898:Single-engined tractor aircraft
799:Aircraft designed and built by
425:17 m (180 sq ft)
413:7 m (23 ft 0 in)
407:8 m (26 ft 3 in)
678:"Picture caption -AIR PAGEANT"
113:Raab-Katzenstein KL.1 Schwalbe
1:
666:(39): 688. 29 September 1927.
585:"German aviation 1919-195-45"
498:3,500 m (11,500 ft)
908:Aircraft first flown in 1926
642:(35): 310. 1 September 1927.
131:In November 1925 test pilot
738:(41): 865. 11 October 1928.
437:710 kg (1,565 lb)
431:470 kg (1,036 lb)
215:A large, almost triangular
924:
536:"L'avion Raab-Katzenstein"
328:Version of KL.IC built in
189:, partially enclosed by a
36:KL.1C Schwalbe with pilot
883:Raab-Katzenstein aircraft
807:
618:(16): 272. 19 April 1928.
375:Les Ailes, September 1927
276:International Aero Show.
35:
26:
21:
714:(26): 647. 26 July 1928.
690:(26): 272. 12 July 1928.
349:Rheinische FR-2 Schwalbe
380:General characteristics
360:Specifications (KL. 1A)
162:. The wings had marked
16:German two-seat biplane
369:
354:Flugzeugbau Rheinische
289:
127:Design and development
654:"Upside down records"
367:
344:derivative by Pintsch
320:Siemens-Halske Sh 12.
287:
141:Dietrich-Gobiet DP.XI
104:Dietrich-Gobiet DP.XI
862:RK.29 Deutsche Motte
451:Siemens-Halske Sh 11
310:Siemens-Halske Sh 12
298:Siemens-Halske Sh 11
202:Siemens-Halske Sh 12
183:Siemens-Halske Sh 11
852:RK.26 Tigerschwalbe
341:Pintsch Schwalbe II
245:Operational history
150:The Schwalbe was a
888:Aerobatic aircraft
827:RK.7 Schmetterling
370:
290:
230:was small but the
152:single bay biplane
117:aerobatic aircraft
49:aerobatic aircraft
870:
869:
630:"Picture caption"
606:"Picture caption"
502:Time to altitude:
168:interplane struts
109:
108:
915:
801:Raab-Katzenstein
793:
786:
779:
770:
740:
739:
722:
716:
715:
698:
692:
691:
674:
668:
667:
650:
644:
643:
626:
620:
619:
602:
596:
595:
593:
591:
581:
572:
571:
569:
567:
557:
544:
543:
531:
496:Service ceiling:
467:
382:
255:Gerhard Fieseler
121:Gerhard Fieseler
100:
90:
83:16 January 1926
60:
52:Type of aircraft
38:Gerhard Fieseler
31:
19:
923:
922:
918:
917:
916:
914:
913:
912:
873:
872:
871:
866:
803:
797:
748:
743:
724:
723:
719:
700:
699:
695:
676:
675:
671:
652:
651:
647:
628:
627:
623:
604:
603:
599:
589:
587:
583:
582:
575:
565:
563:
561:"RK.1 Schwalbe"
559:
558:
547:
533:
532:
515:
511:
463:
459:2-bladed wooden
411:Lower wingspan:
405:Upper wingspan:
378:
362:
282:
247:
185:seven cylinder
129:
98:
88:
59:National origin
58:
53:
17:
12:
11:
5:
921:
919:
911:
910:
905:
900:
895:
890:
885:
875:
874:
868:
867:
865:
864:
859:
854:
849:
844:
839:
837:RK.9 Grasmücke
834:
829:
824:
819:
814:
812:KL.1 Schwalbe
808:
805:
804:
798:
796:
795:
788:
781:
773:
767:
766:
754:Air Enthusiast
747:
744:
742:
741:
717:
693:
669:
645:
621:
597:
573:
545:
512:
510:
507:
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505:
499:
493:
487:
481:
475:
472:Maximum speed:
461:
460:
454:
444:
441:Fuel capacity:
438:
432:
426:
420:
414:
408:
402:
396:
390:
361:
358:
357:
356:
352:Derivative by
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337:
326:
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321:
318:
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306:
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301:
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278:
246:
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160:fabric covered
128:
125:
107:
106:
101:
99:Developed from
95:
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91:
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84:
81:
77:
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71:
67:
66:
61:
55:
54:
51:
45:
41:
40:
33:
32:
24:
23:
22:KL.1 Schwalbe
15:
13:
10:
9:
6:
4:
3:
2:
920:
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906:
904:
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863:
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848:
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835:
833:
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828:
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823:
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815:
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802:
794:
789:
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771:
764:
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755:
750:
749:
745:
737:
733:
732:
727:
721:
718:
713:
709:
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703:
697:
694:
689:
685:
684:
679:
673:
670:
665:
661:
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649:
646:
641:
637:
636:
631:
625:
622:
617:
613:
612:
607:
601:
598:
586:
580:
578:
574:
562:
556:
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546:
541:
537:
530:
528:
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522:
520:
518:
514:
508:
503:
500:
497:
494:
491:
488:
485:
482:
479:
478:Cruise speed:
476:
473:
470:
469:
468:
466:
458:
455:
452:
448:
445:
442:
439:
436:
435:Gross weight:
433:
430:
429:Empty weight:
427:
424:
421:
418:
415:
412:
409:
406:
403:
400:
397:
395:one passenger
394:
391:
388:
385:
384:
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376:
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366:
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348:
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311:
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279:
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275:
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268:
264:
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256:
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233:
229:
225:
222:
218:
213:
211:
210:trailing edge
207:
203:
199:
195:
192:
188:
187:radial engine
184:
179:
177:
173:
169:
165:
161:
157:
153:
148:
146:
145:RK.1 Schwalbe
142:
138:
134:
133:Antonius Raab
126:
124:
122:
118:
114:
105:
102:
97:
96:
92:
87:
86:
82:
80:First flight
79:
78:
75:
72:
70:Manufacturer
69:
68:
65:
62:
57:
56:
50:
46:
43:
42:
39:
34:
30:
25:
20:
822:RK.6 Kranich
817:RK.2 Pelikan
811:
752:
746:Bibliography
735:
729:
720:
711:
705:
696:
687:
681:
672:
663:
657:
648:
639:
633:
624:
615:
609:
600:
588:. Retrieved
564:. Retrieved
539:
501:
495:
489:
484:Stall speed:
483:
477:
471:
464:
462:
456:
446:
440:
434:
428:
422:
416:
410:
404:
398:
392:
386:
379:
377:
372:
371:
353:
271:
252:
248:
239:landing gear
236:
214:
180:
172:leading edge
149:
144:
130:
112:
110:
89:Number built
832:RK.8 Marabu
542:(328): 3–4.
465:Performance
457:Propellers:
447:Powerplant:
334:AEKKEA-RAAB
325:Schwalbe II
877:Categories
842:RK.22 Ente
509:References
423:Wing area:
250:lifetime.
47:Sport and
763:0143-5450
540:Les Ailes
393:Capacity:
373:Data from
267:Waalhaven
263:Blackpool
224:elevators
217:tailplane
903:Biplanes
280:Variants
221:balanced
198:firewall
176:ailerons
590:10 June
566:10 June
417:Height:
399:Length:
300:engine.
206:cockpit
194:cowling
164:stagger
64:Germany
761:
731:Flight
707:Flight
683:Flight
659:Flight
635:Flight
611:Flight
490:Range:
330:Greece
274:Berlin
259:Zürich
232:rudder
226:. Its
137:Kassel
857:RK.27
847:RK.25
387:Crew:
317:KL.IC
305:KL.IB
293:KL.IA
191:dural
156:spars
93:c.50
44:Role
759:ISSN
592:2017
568:2017
449:1 ×
265:and
158:and
111:The
664:XIX
640:XIX
389:One
332:by
228:fin
879::
736:XX
734:.
728:.
712:XX
710:.
704:.
688:XX
686:.
680:.
662:.
656:.
638:.
632:.
616:XX
614:.
608:.
576:^
548:^
538:.
516:^
269:.
147:.
123:.
792:e
785:t
778:v
765:.
594:.
570:.
312:.
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