134:
214:
192:
26:
145:("National Aircraft Industry") a two-seat scout and fighter. Its prototype became the sensation of the Paris Air Salon of 1922. However, the production of the F.K.31 met with many difficulties, forcing the N.V. Nationale Vliegtuig Industrie to close down.
168:
used twelve F.K.31s between 1926-1932. The aircraft had been purchased while the development still was being carried out. The
Finnish pilots disliked the aircraft and the Finnish Air Force F.K.31s flew for fewer than 6 hours each.
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743:
402:
226:
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510:
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255 km/h (158 mph, 138 kn) at 4,000 m (13,000 ft)
549:
197:
380:
117:
two seat reconnaissance-fighter, which was developed in the 1920s by
132:
148:
Further development was carried out in France, resulting in the
384:
137:
De Monge M.101 C2 photo from L'Aéronautique
January,1926
152:, but only a single example was built, powered by a
602:
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509:
435:
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141:The F.K.31 became Koolhoven's first design for the
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45:
37:
32:
18:
764:Aircraft of the Royal Netherlands East Indies Army
396:
8:
744:1920s Dutch military reconnaissance aircraft
362:Green, William; Gordon Swanborough (1994).
403:
389:
381:
180:("Clumsy Boat") in the Finnish Air Force.
15:
121:. The aircraft saw some service in the
351:, one more on mounting in rear cockpit
7:
240:Green & Swanborough (1997) p.461
266:13.7 m (44 ft 11 in)
143:N.V. Nationale Vliegtuig Industrie
14:
278:27.2 m (293 sq ft)
272:3.4 m (11 ft 2 in)
260:7.8 m (25 ft 7 in)
347:One or two fixed forward firing
212:
190:
172:The Koolhoven F.K.31 was called
24:
754:Single-engined tractor aircraft
1:
560:Nationale Vliegtuig Industrie
364:The Complete Book of Fighters
290:1,800 kg (3,968 lb)
284:1,040 kg (2,293 lb)
52:Nationale Vliegtuig Industrie
759:Aircraft first flown in 1923
304:, 310 kW (420 hp)
780:
604:N.V. Koolhoven Vliegtuige
23:
511:British Aerial Transport
420:Pre-World War I aircraft
366:. New York: Smithmark.
245:General characteristics
138:
41:Reconnaissance-fighter
749:Parasol-wing aircraft
154:Gnome & Rhône 9Ac
136:
427:Koolhoven Heidevogel
437:Armstrong Whitworth
119:Frederick Koolhoven
33:General information
739:Koolhoven aircraft
139:
726:
725:
300:IV nine-cylinder
205:Finnish Air Force
166:Finnish Air Force
150:De Monge M.101 C2
123:Finnish Air Force
104:
103:
81:Introduction date
62:Finnish Air Force
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535:F.K.25 Basilisk
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298:Bristol Jupiter
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156:radial engine.
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323:Maximum speed:
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233:Specifications
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176:("Clumsy") or
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160:Use in Finland
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530:F.K.24 Baboon
528:
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525:F.K.23 Bantam
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373:0-8317-3939-8
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288:Gross weight:
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282:Empty weight:
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446:F.K.1 Sissit
363:
349:machine guns
344:
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147:
142:
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115:parasol wing
106:
105:
89:First flight
68:Number built
58:Primary user
47:Manufacturer
550:F.K.28 Crow
316:Performance
308:Propellers:
294:Powerplant:
220:Netherlands
733:Categories
356:References
329:Endurance:
276:Wing area:
107:NVI F.K.31
562:aircraft]
412:Koolhoven
264:Wingspan:
238:Data from
184:Operators
178:Kolhovene
113:designed
92:June 1923
606:aircraft
513:aircraft
439:aircraft
414:aircraft
337:Armament
310:2-bladed
270:Height:
258:Length:
227:LA-KNIL
198:Finland
129:History
97:Retired
76:History
718:F.K.59
713:F.K.58
708:F.K.57
703:F.K.56
698:F.K.55
693:F.K.54
688:F.K.53
683:F.K.52
678:F.K.51
673:F.K.50
668:F.K.49
663:F.K.48
658:F.K.47
653:F.K.46
648:F.K.45
643:F.K.44
638:F.K.43
633:F.K.42
628:F.K.41
623:F.K.40
618:F.K.36
613:F.K.30
594:F.K.35
589:F.K.34
584:F.K.33
579:F.K.32
574:F.K.31
569:F.K.29
545:F.K.27
540:F.K.26
520:F.K.22
501:F.K.13
496:F.K.12
491:F.K.10
370:
302:radial
217:
195:
109:was a
19:F.K.31
486:F.K.9
481:F.K.8
476:F.K.7
471:F.K.6
466:F.K.5
461:F.K.4
456:F.K.3
451:F.K.2
345:Guns:
252:Crew:
174:Kolho
111:Dutch
368:ISBN
331:6 hr
296:1 ×
164:The
100:1927
84:1925
38:Type
254:Two
735::
125:.
71:17
404:e
397:t
390:v
376:.
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