262:
heat-resistant steel and provided with a special blast deflector chamber to deflect the blast gasses away from the engine inlets. Two doors were provided at the bottom of the chamber to ventilate the chamber while firing. One problem occurred almost immediately during testing when the blast gases accumulated in the section where spent cartridges and links were saved and sometimes ignited. Occasionally this was strong enough to actually deform the chamber. The spent shell case section was thoroughly ventilated and muzzle brakes were introduced to successfully cure the problem.
326:
small wing bomb bays and there was no danger of the engines ingesting blast gasses from the guns. The spotter-navigator was given an extensively glazed position at the tip of the nose that was well-protected with armor and bulletproof glass. The first fuselage was nearing completion when the order came to cancel the entire program. The second variant was a
312:
of the improved version, designated as the Il-40P. The Il-40P prototype first flew on 14 February 1955 and began State acceptance trials on 12 October 1955. The changes had resolved all the problems suffered by the earlier design and an order for a first batch of forty production machines was placed.
143:
or hiccup. Remedying this problem took over a year and involved the radical change of moving the engine air intakes all the way to the very front of the aircraft and repositioning the guns from the tip of the nose to the bottom of the fuselage, just behind the nosewheel. The aircraft, now resembling
325:
Before the program was canceled, two variants had been studied by
Ilyushin. The first was an artillery-spotting version known as the Il-40K. This model added a third crewman in a redesigned forward fuselage. The air intakes were reverted to their original position as the guns had been placed in the
282:
by the engine on the side opposite the sideslip. Several solutions were evaluated to cure the problem, but
Ilyushin pushed for the more radical solution of extending the air intakes for the engines all the way to the nose of the aircraft and moving the guns to the bottom of the nose, behind the air
226:
with a total capacity of 1,100 litres (290 US gal). The normal bombload was 400 kg (880 lb), but 1,000 kg (2,200 lb) could be carried at overload. Under overloaded conditions, a maximum of twelve TRS-82 or eight TRS-132 rockets could be carried. Two cameras were fitted
184:
The Il-40 had wings set low on the fuselage, swept back at an angle of 35°, and a tricycle undercarriage. The two AM-5 engines were in pods adjacent to the fuselage. As was traditional for
Ilyushin ground-attack aircraft, the core of Il-40's structure was a load-bearing armored shell that protected
189:
glazing was also bulletproof and the pilot was given an 8 mm (0.31 in) armored headrest to protect him against shells fired from above and behind. The gunner was protected by armor 4–10 mm (0.16–0.39 in) thick. The total weight of the armored shell and the bulletproof glass was
286:
The change in position of the guns and the extension of the air intakes, which looked "uncannily like a double-barreled shotgun," allowed the nosewheel to be moved forward to lengthen the wheelbase. The guns were mounted behind the nosewheel well and a special shield was added to protect the gun
265:
Resolving the problem with the guns had prevented the aircraft from undergoing its State acceptance trials in July 1953 as stipulated and a special commission was appointed to conduct the trials on 31 December 1953. After the manufacturer's trials were successfully concluded in
January 1954 the
261:
A decision was made to replace the six NR-23 guns in the nose with four AM-23 cannon with 225 rounds per gun that had a rate of fire 50% greater than that of the NR-23 and to totally revise the gun installation. The guns were moved to the very tip of the nose in a separate compartment made of
221:
were fitted in the wings with a maximum capacity of 100 kg (220 lb) each. Alternatively, four bomb racks could be fitted under the wings that could carry bombs up to 500 kg (1,100 lb),82 mm (3.2 in) TRS-82 or 132 mm (5.2 in) TRS-132 rockets, or
185:
both crew positions, six fuel tanks and part of the radio and electrical equipment. The thickness of the shell ranged from 3 to 8 mm (0.12 to 0.31 in) in thickness. The armored bulkhead protecting the pilot from the front was 10 mm (0.39 in) thick. The
38:
330:-carrying version called the Il-40T which was based on the fuselage of the Il-40K, but the navigator-bombardier's position had optically flat glass panels to facilitate aiming. Not much effort was devoted to this model and it was canceled at an early stage.
291:
V, an improved version of the AM-5F, the normal bombload was increased to 1,000 kg and 1,400 kg (3,100 lb) in overloaded condition, and a rearview mirror was added to allow the pilot to better observe the rear upper hemisphere.
321:
was superseded by the
Fighter-Bomber branch and the doctrine of the VVS was drastically modified. No longer would the VVS provide close support to the Army, but rather it would use tactical nuclear weapons as part of the nuclear battlefield.
316:
Five of these had been completed by the spring of 1956 and were undergoing preflight tests when the entire program was canceled on 13 April 1956 and all components in preparation scrapped. A week later, the Attack
Aviation branch of the
216:
with 200 rounds. It had a maximum elevation of 55°, a maximum depression of 40° and could traverse 60° to either side. The Il-K10 could traverse at a rate of 42° per second and elevate at a rate of 38° per second. Four small
250:. The pilot was able to restart the engines and returned safely, but Sergey Ilyushin immediately started an investigation into the cause of the engine problems. Ground tests with high-speed cameras revealed that none of the
266:
aircraft was turned over and the State acceptance trials lasted from 21 January — 15 March 1954. The tests were generally successful with the Il-40 proving to be easy to fly, maneuverable enough to be a handful for the
181:) and 2,700 kgf (5,952 lbf) with afterburner. In January 1952 Ilyushin sent this proposal to the government, which was quickly accepted, and he was directed to design and build one prototype.
287:
barrels from debris thrown up by the nosewheel; it was mechanically linked to the nosewheel and extended when it did. Other changes included the replacement of the original AM-5F engines by the
144:
a double-barreled shotgun from the front, was ordered into production in 1955. Only five production aircraft had been completed before the entire program was canceled in early 1956 when the
1139:
139:. The first prototype flew in 1953 and was very successful except when it fired its guns, as their combustion gasses disturbed the airflow into the engines and caused them to
242:. The biggest problem proved to be the guns and their effect on the engines. During the first aerial test of the cannons at the end of March 1953 the
163:
had begun design studies during 1950–51 for a jet-engined ground-attack aircraft possessing better performance characteristics than was possible with
832:
757:
167:
aircraft. By the end of 1951 the
Ilyushin design bureau had prepared a technical proposal for a two-seat armored aircraft using two
198:
were fitted on the rear fuselage, one on each side and one underneath, to enhance the aircraft's maneuverability during a dive.
1154:
1134:
300:
Ilyushin began construction of another prototype to evaluate this solution and this was endorsed on 16 October 1954 when the
406:
OKB Ilyushin: A History of the Design Bureau and its
Aircraft, The Osprey Encyclopedia of Russian Aircraft from 1875–1995
693:
638:
230:
The Il-40 first flew on 7 March 1953, and flight tests revealed no serious shortcomings in the air. The operational
231:
750:
301:
278:
M ground-attack aircraft then in service. However flight tests did reveal blast gas ingestion when firing in a
258:
tested made any difference; the engines would hiccup even if only a single gun fired just five to ten rounds.
494:
engines, 25.5 kN (5,730 lbf) thrust each dry, 31.9 kN (7,170 lbf) with afterburner
368:) – Torpedo bomber, three-seater with navigator in glazed nose with optically flat panels for weapon aiming.
1149:
1129:
743:
208:
mounted in the nose, three on each side, each with 150 rounds, with their muzzles protruding into the
600:
271:
267:
149:
202:
136:
74:
59:
975:
822:
491:
358:– corrector) – Artillery spotter, three-seater with spotter-navigator in glazed nose cockpit.
195:
164:
8:
590:
121:
1144:
689:
634:
595:
318:
145:
22:
710:
954:
255:
171:
1108:
1046:
1026:
1010:
1005:
949:
944:
939:
837:
578:
386:
160:
234:
was too far aft, but this was only a minor problem when landing, taking off and
1092:
1041:
1036:
1031:
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995:
990:
985:
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970:
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929:
924:
919:
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883:
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873:
817:
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488:
275:
1123:
1087:
1082:
1077:
868:
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858:
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807:
802:
786:
781:
309:
288:
191:
168:
1056:
681:
626:
251:
243:
129:
374:– Late 1960s revival of the Il-40 concept, beaten in competition with the
1072:
1051:
178:
375:
209:
205:
274:
fighters opposing it and considerably superior to the piston-engined
239:
223:
735:
766:
563:
up to 1,400 kg (3,100 lb) of bombs in four wing bomb bays
391:
279:
247:
218:
213:
177:
rated at 2,150 kgf (4,740 lbf) at maximum power (without
174:
140:
79:
448:
327:
235:
227:
in the rear fuselage for day and night damage-assessment photos.
186:
132:
686:
OKB Ilyushin: A History of the Design Bureau and its
Aircraft
456:
379:
212:. One NR-23 was mounted in a remotely-controlled Il-K10 tail
37:
515:
1,320 km (820 mi, 710 nmi) (with drop tanks)
680:
631:
549:
1 × AM-23 23 mm cannon in remotely controlled rear turret
1140:
Abandoned military aircraft projects of the Soviet Union
557:
4 underwing pylons carrying bombs, rockets or drop tanks
201:
The initial armament was six 23 mm (0.91 in)
621:
619:
617:
390:– Ultimate iteration of the Il-40/Il-42, with modern
194:
were provided for both crewmembers. Three perforated
148:
discarded its close air-support doctrine in favor of
614:
585:
Aircraft of comparable role, configuration, and era
684:; Komissarov, Dmitriy; Komissarov, Sergey (2004).
1121:
348:– Second prototype and five production aircraft.
238:, especially when coupled with the rather short
246:temporarily blinded the pilot and both engines
751:
546:4 × AM-23 23 mm cannon in the fuselage nose.
394:and engines, also beaten by the Sukhoi T-8.
758:
744:
398:
21:"Il-40" redirects here. For the road, see
16:1953 attack aircraft prototype by Ilyushin
676:
674:
672:
670:
633:. London: Osprey Aerospace. p. 116.
509:993 km/h (617 mph, 536 kn)
668:
666:
664:
662:
660:
658:
656:
654:
652:
650:
304:ordered production to begin at Factory (
711:"The Incomplete Guide to Airfoil Usage"
625:
527:31.5 kg/m (6.5 lb/sq ft)
1122:
765:
739:
688:. London: Ian Allan. pp. 67–75.
647:
708:
702:
426:17.215 m (56 ft 6 in)
438:5.76 m (18 ft 11 in)
13:
731:
14:
1166:
444:54.1 m (582 sq ft)
432:17 m (55 ft 9 in)
36:
481:17,600 kg (38,801 lb)
475:16,600 kg (36,597 lb)
190:1,918 kg (4,228 lb).
521:11,600 m (38,100 ft)
469:8,500 kg (18,739 lb)
155:
1:
608:
295:
1155:Aircraft first flown in 1953
1135:1950s Soviet attack aircraft
7:
567:
333:
10:
1171:
20:
1101:
1065:
1019:
963:
902:
846:
795:
774:
106:
101:
93:
85:
73:
65:
55:
50:
35:
30:
601:Sud Aviation Vautour IIA
150:tactical nuclear weapons
715:m-selig.ae.illinois.edu
627:Gunston, William ‘Bill’
411:General characteristics
399:Specifications (Il-40P)
203:Nudelman-Rikhter NR-23
137:ground-attack aircraft
60:Ground-attack aircraft
45:, the second prototype
492:afterburning turbojet
302:Council of Ministers
152:on the battlefield.
591:Douglas A-4 Skyhawk
573:Related development
479:Max takeoff weight:
122:NATO reporting name
51:General information
964:Passenger aircraft
1150:Low-wing aircraft
1130:Ilyushin aircraft
1117:
1116:
709:Lednicer, David.
596:Saab A 32A Lansen
459:SR-Yus-12 ;
356:korrektirovshchik
342:– First prototype
256:blast suppressors
128:) was a two-seat
114:
113:
23:Illinois Route 40
1162:
760:
753:
746:
737:
736:
726:
725:
723:
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645:
644:
623:
535:
519:Service ceiling:
502:
413:
40:
28:
27:
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1120:
1119:
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1015:
959:
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842:
796:Attack aircraft
791:
770:
764:
734:
732:Further reading
729:
719:
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707:
703:
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679:
648:
641:
624:
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611:
579:Ilyushin Il-102
570:
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536:
531:
498:
409:
401:
336:
298:
161:Sergey Ilyushin
158:
66:National origin
46:
43:Ilyushin Il-40P
26:
17:
12:
11:
5:
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1020:Reconnaissance
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558:
552:
551:
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529:
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522:
516:
510:
507:Maximum speed:
496:
495:
489:Tumansky RD-9V
482:
476:
470:
464:
463:TsAGI SR-11-12
445:
439:
433:
427:
421:
400:
397:
396:
395:
383:
369:
359:
349:
343:
335:
332:
297:
294:
276:Ilyushin Il-10
192:Ejection seats
165:piston-engined
157:
154:
118:Ilyushin Il-40
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695:1-85780-187-3
691:
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682:Gordon, Yefim
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640:1-85532-405-9
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525:Wing loading:
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473:Gross weight:
471:
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467:Empty weight:
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458:
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366:torpedonosets
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338:
337:
331:
329:
323:
320:
314:
311:
310:Rostov-on-Don
308:) No. 168 at
307:
303:
293:
290:
289:Tumansky RD-9
284:
281:
277:
273:
269:
263:
259:
257:
253:
252:muzzle brakes
249:
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58:
54:
49:
44:
39:
34:
29:
24:
19:
1066:Experimental
976:Il-18 (1946)
827:
718:. Retrieved
714:
704:
685:
630:
605:
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583:
572:
571:
560:
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371:
365:
361:
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351:
345:
339:
324:
315:
305:
299:
285:
264:
260:
244:muzzle flash
229:
200:
183:
169:Mikulin AM-5
159:
125:
117:
115:
110:7 March 1953
107:First flight
94:Number built
75:Manufacturer
69:Soviet Union
42:
18:
555:Hardpoints:
500:Performance
485:Powerplant:
378:(prototype
179:afterburner
156:Development
133:jet-engined
1124:Categories
1032:Il-22 (II)
915:Il-20 (II)
903:Transports
609:References
442:Wing area:
376:Sukhoi T-8
296:Production
248:flamed out
224:drop tanks
210:slipstream
206:autocannon
172:axial-flow
874:Il-22 (I)
823:Il-20 (I)
430:Wingspan:
404:Data from
283:intakes.
268:MiG-15bis
240:wheelbase
219:bomb bays
196:airbrakes
175:turbojets
89:Prototype
1145:Twinjets
775:Fighters
769:aircraft
767:Ilyushin
720:16 April
629:(1995).
568:See also
533:Armament
392:avionics
334:Variants
280:sideslip
214:barbette
141:flameout
135:armored
80:Ilyushin
1102:Trainer
955:PAK VTA
847:Bombers
449:Airfoil
436:Height:
424:Length:
328:torpedo
236:taxiing
187:cockpit
102:History
1109:Il-103
1047:Il-140
1027:Il-20M
1011:Il-114
1006:Il-108
950:Il-276
945:Il-112
940:Il-106
838:Il-102
692:
637:
561:Bombs:
513:Range:
387:Il-102
362:Il-40T
352:Il-40K
346:Il-40P
272:MiG-17
130:Soviet
126:Brawny
86:Status
1093:Il-26
1057:A-100
1042:Il-38
1037:Il-24
1001:Il-96
996:Il-90
991:Il-86
986:Il-62
981:Il-18
971:Il-14
935:Il-80
930:Il-78
925:Il-76
920:Il-32
910:Il-12
894:Il-54
889:Il-46
884:Il-30
879:Il-28
833:Il-42
828:Il-40
818:Il-16
813:Il-10
541:Guns:
457:TsAGI
454:root:
418:Crew:
380:Su-25
372:Il-42
340:Il-40
306:Zavod
31:Il-40
1088:Il-8
1083:Il-1
1078:I-21
1073:A-60
1052:A-50
869:Il-6
864:DB-4
859:Il-4
854:DB-3
808:Il-8
803:Il-2
787:Il-1
782:I-21
722:2019
690:ISBN
635:ISBN
487:2 ×
461:tip:
270:and
116:The
56:Type
364:– (
354:– (
319:VVS
254:or
146:VVS
1126::
713:.
649:^
616:^
232:CG
124::
759:e
752:t
745:v
724:.
698:.
643:.
451::
420:2
382:)
120:(
97:7
25:.
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