206:
and began operations in August 1933. Though this service was successful in the sense of increasing mail volume it showed that these night flights were stressful for a single pilot in a single-engined aircraft, especially in bad weather. As a result, the P-1s were gradually retired over two pioneering
177:
with wheels on divided axles, their centres hinged on a short, under-fuselage V-strut pylon. Splayed landing struts and rearward drag struts were mounted on the lower fuselage longerons. The wheels were largely enclosed under narrow
155:, placed the pilot well behind the wings. Night flight safety was increased by two landing lights under mid-span and parachute flares. It also had a radio receiver and a radio beacon.
81:
was a 1930s
Japanese single engine, single seat biplane intended for night mail flights, derived from the Nakajima E4N3 Naval reconnaissance seaplane. Nine were built.
152:
128:, inverted Vs to the forward spar and single struts to the rear. The lower wing, slightly shorter in span, was joined directly to the lowest fuselage
916:
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891:
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851:
831:
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The fuselage was circular immediately behind the large radial engine but became more flat-sided rearwards. The tail was conventional with the
412:
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124:
between the spars aided by wire-bracing. The central upper wing was joined to the fuselage with outward-leaning
1059:
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51:
166:
with rounded tips and cut-outs for rudder movement. The vertical tail was also rounded, with a full
715:
106:
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836:
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163:
151:. Its cockpit, initially open but enclosed on later aircraft with glazing running aft into a
125:
147:, a related nine cylinder radial which had powered the Nakajima E4N3. Both had narrow-chord
93:
to fly a new night mail service. Their design, the
Nakajima P-1, was based on that of the
8:
1079:
291:
136:
113:
1064:
374:
144:
121:
194:
s eight aircraft was completed in May 1933. The standard night mail route connected
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A ninth, specially built, P-1 was used by the
Ministry of Communications.
694:
689:
135:
The P-1 was powered by a nose-mounted 420–450 hp (310–340 kW)
117:
207:
years, replaced by larger, twin-engined aircraft with a larger crew.
159:
143:
though some were later re-engined with the 585 hp (436 kW)
129:
26:
390:
98:
89:
In
January 1933 Nakajima won a contract for eight mailplanes from
269:
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102:
167:
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41:
1051:
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373:. London: Putnam Publishing. pp. 206–7.
413:
399:
700:Nieuport-Delage NiD 29/Nakajima 甲4 (Ko 4)
368:
330:1,000 km (620 mi, 540 nmi)
324:194 km/h (121 mph, 105 kn)
318:243 km/h (151 mph, 131 kn)
84:
369:Mikesh, Robert C.; Abe, Shorzoe (1990).
336:9 m 27 s to 3,000 m (9,800 ft)
162:mounted on top of the fuselage carrying
105:of mixed wood and metal structure with
101:. The P-1 was a single seat, landplane
1052:
185:
420:
394:
364:
362:
360:
358:
356:
354:
352:
350:
259:32.57 m (350.6 sq ft)
303:Hamilton Standard fixed pitch metal
247:10.97 m (36 ft 0 in)
13:
683:Army manufacturer type code system
253:3.70 m (12 ft 2 in)
241:7.66 m (25 ft 2 in)
14:
1091:
347:
213:
95:Nakajima E4N3 (Navy Type 90-2-3)
1070:Single-engined tractor aircraft
721:Type 94 reconnaissance aircraft
170:that reached down to the keel.
695:Nieuport 24/Nakajima 甲3 (Ko 3)
690:Nieuport 83/Nakajima 甲2 (Ko 2)
1:
1075:1940s Japanese civil aircraft
340:
284:1,992 kg (4,392 lb)
278:1,225 kg (2,701 lb)
676:Imperial Japanese Army types
430:Imperial Japanese Navy types
7:
371:Japanese Aircraft 1910-1941
221:Japanese Aircraft 1910-1941
10:
1096:
946:WW2 Allied reporting names
751:Type 2 single-seat fighter
541:Reconnaissance floatplanes
944:
764:
726:Type 95 training aircraft
708:
682:
675:
650:
634:
618:
592:
567:Land-based Attack Bombers
566:
540:
524:
498:
467:
436:
429:
145:Nakajima Kotobuki 2-kai-1
52:Nakajima Aircraft Company
18:
499:Reconnaissance aircraft
468:Carrier Torpedo Bombers
226:General characteristics
85:Design and development
741:Type 100 heavy bomber
292:Nakajima Jupiter VI
186:Operational history
153:turtle back fairing
137:Nakajima Jupiter VI
97:, a reconnaissance
765:Kitai (airframe #)
635:Floatplane fighter
173:The P-1 had fixed
120:wings with N-form
61:early summer 1933
1060:Nakajima aircraft
1047:
1046:
940:
939:
736:Type 97 transport
671:
670:
334:Time to altitude:
268:N-22 upper wing,
122:interplane struts
75:
74:
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680:
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437:Carrier fighters
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311:
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192:Nihon Koku Yuso'
149:Townend cowlings
68:
38:
30:Type of aircraft
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15:
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731:Type 97 fighter
716:Type 91 fighter
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180:helmet fairings
107:fabric covering
91:Nihon Koku Yuso
87:
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37:National origin
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11:
5:
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756:Type 4 fighter
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746:Type 1 fighter
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709:Army type-year
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610:Nakajima Kikka
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316:Maximum speed:
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215:
214:Specifications
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139:nine cylinder
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382:
380:1-55750-563-2
376:
372:
365:
363:
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329:
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323:
322:Cruise speed:
320:
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314:
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293:
289:
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283:
282:Gross weight:
280:
277:
276:Empty weight:
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197:
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190:The first of
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141:radial engine
138:
133:
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127:
126:cabane struts
123:
119:
115:
110:
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100:
96:
92:
82:
80:
70:
65:
64:
60:
58:First flight
57:
56:
53:
50:
48:Manufacturer
47:
46:
43:
40:
35:
34:
28:
25:
22:
21:
17:
662:
593:Interceptors
525:Dive bombers
370:
333:
327:
321:
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308:
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287:
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275:
262:
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191:
189:
175:landing gear
172:
157:
134:
111:
90:
88:
79:Nakajima P-1
78:
76:
67:Number built
309:Performance
301:Propellers:
294:9 cylinder
288:Powerplant:
112:It had two
1080:Mailplanes
1054:Categories
619:Transports
341:References
257:Wing area:
118:single bay
245:Wingspan:
219:Data from
164:elevators
160:tailplane
130:longerons
27:mailplane
1065:Biplanes
424:aircraft
422:Nakajima
99:seaplane
270:Clark Y
264:Airfoil
251:Height:
239:Length:
204:Fukuoka
103:biplane
979:Irving
932:Ki-230
927:Ki-201
922:Ki-115
917:Ki-113
912:Ki-106
907:Ki-101
642:A6M2-N
377:
328:Range:
296:radial
168:rudder
1034:Thora
1019:Oscar
1009:Clint
974:Helen
969:Frank
954:Abdul
902:Ki-87
897:Ki-84
892:Ki-82
887:Ki-80
882:Ki-75
877:Ki-68
872:Ki-63
867:Ki-62
862:Ki-58
857:Ki-53
852:Ki-52
847:Ki-49
842:Ki-44
837:Ki-43
832:Ki-41
827:Ki-37
822:Ki-34
817:Ki-31
812:Ki-27
807:Ki-19
802:Ki-16
797:Ki-13
792:Ki-12
787:Ki-11
651:Other
272:lower
233:Crew:
200:Osaka
196:Tokyo
42:Japan
23:Role
1039:Tojo
1029:Rufe
1024:Rita
1014:Nate
1004:Myrt
994:Kate
984:Jill
964:Dave
782:Ki-8
777:Ki-6
772:Ki-4
658:LB-2
584:G10N
375:ISBN
290:1 ×
202:and
114:spar
77:The
999:Liz
989:Jim
959:Bob
663:P-1
626:L1N
605:J5N
600:J1N
579:G8N
574:G5N
558:E8N
553:E4N
548:E2N
532:D3N
516:C6N
511:C3N
506:C2N
490:B6N
485:B5N
480:B4N
475:B3N
459:A4N
454:A3N
449:A2N
444:A1N
235:one
1056::
349:^
198:,
182:.
132:.
116:,
109:.
71:9
414:e
407:t
400:v
383:.
266::
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