28:
139:
units of the first two machines. Financial backing could not be obtained for further development, and the project was abandoned by 1975. The first prototype is preserved at
697:
419:
727:
104:
and also known as the
Grasshopper III) was a five-seat utility helicopter that first flew in the UK in 1969. It was a joint development between
116:
design. A new, highly streamlined pod-and-boom fuselage was married to the
Grasshopper's coaxial rotor system, and the new aircraft registered
722:
387:
368:
349:
707:
717:
702:
140:
36:
412:
136:
712:
405:
176:
486:
113:
105:
58:
655:
660:
166:
109:
62:
612:
607:
602:
597:
592:
587:
572:
567:
562:
530:
520:
510:
505:
242:
132:
645:
640:
635:
437:
428:
383:
364:
345:
144:
691:
27:
112:
now a subsidiary of Cierva, based on the dynamic systems of the latter company's
617:
582:
577:
557:
551:
546:
541:
535:
525:
515:
650:
627:
500:
495:
476:
471:
466:
461:
456:
451:
446:
397:
401:
131:
in 1971, this latter example fitted with 210 hp
669:
626:
485:
436:
175:- proposed production variant with 320 hp
165:- proposed production variant with 210 hp
413:
382:. Ramsbury: Airlife Publishing. p. 212.
8:
420:
406:
398:
278:120 mph (193 km/h, 100 kn)
272:130 mph (209 km/h, 110 kn)
363:. London: Studio Editions. p. 255.
191:Jane's All The World's Aircraft 1971-72
342:Jane's All The World's Aircraft 1971-72
318:
284:500 mi (804 km, 430 nmi)
251:2 × 33 ft 0 in (10.06 m)
670:Cierva Autogiro Company and Rotorcraft
17:
35:Cierva Grasshopper III on display at
7:
698:1960s British civil utility aircraft
380:Airlife's Helicopters and Rotorcraft
223:9 ft 11 in (3.02 m)
217:28 ft 2 in (8.58 m)
14:
257:804 sq ft (74.7 m)
123:Two further prototypes followed,
296:1,400 ft/min (7.1 m/s)
26:
728:Twin-engined piston helicopters
361:Jane's Encyclopedia of Aviation
340:Taylor, John W.R., ed. (1971).
359:Taylor, Michael J. H. (1989).
120:first flew on 18 August 1969.
37:the Helicopter Museum (Weston)
1:
290:20,000 ft (6,100 m)
235:3,150 lb (1,439 kg)
137:Rolls-Royce Continental O-300
723:Aircraft first flown in 1969
344:. London: Jane's Yearbooks.
708:Cancelled aircraft projects
229:1,935 lb (878 kg)
135:-D engines in place of the
744:
718:Coaxial rotor helicopters
703:1960s British helicopters
34:
25:
20:
325:Taylor 1971, pp.186-187.
177:Continental Tiara T6-320
487:Cierva Autogiro Company
378:Simpson, R. W. (1998).
245:, 135 hp (101 kW) each
196:General characteristics
106:Cierva Autogiro Company
100:(originally designated
59:Cierva Autogiro Company
169:-A engines (not built)
159:- prototypes (3 built)
141:The Helicopter Museum
249:Main rotor diameter:
167:Continental TSIO-360
554:(de Havilland C.24)
179:engines (not built)
243:Continental IO-360
133:Continental IO-360
127:later in 1969 and
47:Utility helicopter
685:
684:
438:Juan de la Cierva
389:978-1-85310-968-3
370:978-0-517-10316-6
351:978-0-354-00094-9
145:Weston-super-Mare
94:
93:
735:
422:
415:
408:
399:
393:
374:
355:
326:
323:
288:Service ceiling:
265:
255:Main rotor area:
198:
87:
49:Type of aircraft
30:
18:
743:
742:
738:
737:
736:
734:
733:
732:
713:Cierva aircraft
688:
687:
686:
681:
665:
622:
538:(Avro Type 620)
481:
432:
426:
396:
390:
377:
371:
358:
352:
339:
330:
329:
324:
320:
310:
303:
261:
194:
186:
153:
85:
80:18 August 1969
50:
12:
11:
5:
741:
739:
731:
730:
725:
720:
715:
710:
705:
700:
690:
689:
683:
682:
680:
679:
673:
671:
667:
666:
664:
663:
658:
656:W.11 Air Horse
653:
648:
643:
638:
632:
630:
624:
623:
621:
620:
615:
610:
605:
600:
595:
590:
585:
580:
575:
570:
565:
560:
555:
549:
544:
539:
533:
528:
523:
518:
513:
508:
503:
498:
492:
490:
483:
482:
480:
479:
474:
469:
464:
459:
454:
449:
443:
441:
434:
433:
427:
425:
424:
417:
410:
402:
395:
394:
388:
375:
369:
356:
350:
336:
335:
334:
328:
327:
317:
316:
315:
314:
309:
306:
302:
299:
298:
297:
294:Rate of climb:
291:
285:
279:
273:
270:Maximum speed:
259:
258:
252:
246:
236:
230:
224:
218:
212:
206:
185:
184:Specifications
182:
181:
180:
170:
160:
152:
149:
98:Cierva CR Twin
92:
91:
88:
82:
81:
78:
74:
73:
70:
66:
65:
63:Rotorcraft Ltd
56:
52:
51:
48:
45:
41:
40:
32:
31:
23:
22:
13:
10:
9:
6:
4:
3:
2:
740:
729:
726:
724:
721:
719:
716:
714:
711:
709:
706:
704:
701:
699:
696:
695:
693:
678:
675:
674:
672:
668:
662:
659:
657:
654:
652:
649:
647:
644:
642:
639:
637:
634:
633:
631:
629:
625:
619:
616:
614:
611:
609:
606:
604:
601:
599:
596:
594:
591:
589:
586:
584:
581:
579:
576:
574:
571:
569:
566:
564:
561:
559:
556:
553:
550:
548:
545:
543:
540:
537:
534:
532:
529:
527:
524:
522:
519:
517:
514:
512:
509:
507:
504:
502:
499:
497:
494:
493:
491:
488:
484:
478:
475:
473:
470:
468:
465:
463:
460:
458:
455:
453:
450:
448:
445:
444:
442:
439:
435:
430:
423:
418:
416:
411:
409:
404:
403:
400:
391:
385:
381:
376:
372:
366:
362:
357:
353:
347:
343:
338:
337:
332:
331:
322:
319:
312:
311:
307:
305:
300:
295:
292:
289:
286:
283:
280:
277:
276:Cruise speed:
274:
271:
268:
267:
266:
264:
256:
253:
250:
247:
244:
240:
237:
234:
233:Gross weight:
231:
228:
227:Empty weight:
225:
222:
219:
216:
213:
210:
207:
204:
201:
200:
199:
197:
192:
190:
183:
178:
174:
171:
168:
164:
161:
158:
155:
154:
150:
148:
146:
142:
138:
134:
130:
126:
121:
119:
115:
111:
107:
103:
99:
89:
84:
83:
79:
77:First flight
76:
75:
71:
68:
67:
64:
60:
57:
55:Manufacturer
54:
53:
46:
43:
42:
38:
33:
29:
24:
19:
16:
676:
661:W.14 Skeeter
379:
360:
341:
333:Bibliography
321:
304:
293:
287:
281:
275:
269:
262:
260:
254:
248:
238:
232:
226:
220:
214:
211:4 passengers
208:
202:
195:
193:
188:
187:
172:
162:
156:
128:
124:
122:
117:
101:
97:
95:
86:Number built
72:J S Shapiro
15:
263:Performance
239:Powerplant:
114:Grasshopper
692:Categories
628:Weir Group
308:References
110:Rotorcraft
209:Capacity:
205:One pilot
189:Data from
69:Designer
431:aircraft
301:See also
151:Variants
102:CR LTH.1
21:CR Twin
677:CR Twin
440:(Spain)
221:Height:
215:Length:
157:CR Twin
429:Cierva
386:
367:
348:
282:Range:
173:CR.640
163:CR.420
129:G-AZAU
125:G-AXFM
118:G-AWRP
313:Notes
203:Crew:
44:Role
618:C.40
613:C.39
608:C.37
603:C.34
598:C.33
593:C.32
588:C.31
583:C.30
578:C.29
573:C.28
568:C.27
563:C.26
558:C.25
552:C.24
547:C.21
542:C.20
536:C.19
531:C.18
526:C.17
521:C.14
516:C.12
511:C.11
506:C.10
489:(UK)
384:ISBN
365:ISBN
346:ISBN
241:2 ×
108:and
96:The
651:W.9
646:W.6
641:W.5
636:W.4
501:C.9
496:C.8
477:C.7
472:C.6
467:C.5
462:C.4
457:C.3
452:C.2
447:C.1
143:in
694::
147:.
90:3
61:/
39:.
421:e
414:t
407:v
392:.
373:.
354:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
