29:
127:
Producing 710 kW (950 hp) from 54.5 L (3,324 cu in), the A.25 was the largest and most powerful in the range. When Fiat were advised by the government to simplify their water-cooled product line, they focussed on the A.20, A.22 and A.30 models, so the A.25 was not further
124:; capacities ranged between 18.7 L and 54.5 L (1,141-3,324 cu in) and power outputs between 320 kW and 745 kW (430-1,000 hp).
529:
761:
136:
The only series produced types powered by the A.25 were the Fiat BR.2 and BR.3 single engine bombers. These began operating with the
495:
399:
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450:
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developed. They concentrated their higher power development effort on radial engines instead.
491:
446:
395:
350:
141:
137:
94:
346:
normal, 708 kW (950 hp) at 1,700 rpm at sea level. Maximum, 745 kW (1,000 hp) at 1,900 rpm.
290:
270:
717:
541:
204:
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59:
116:
During the 1920s Fiat introduced several water-cooled aircraft engines, including the
755:
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121:
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243:
Two overhead camshafts, driven via enclosed, inclined shafts. The cams operate two
314:
262:
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90:
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222:
120:, A.22, A24, A.25 and A.30. They were all upright V-12s with 60° between the
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from the 1920s. It produced 708 kW (950 hp) and was used by the
329:: Each an aluminium casting, split on crankshaft centre line. Bolted-on
507:
28:
178:
Flight 25 July 1929, pp.773-4 and Jane's All the World's
Aircraft 1938
105:
49:
394:(2 ed.). Wellingborough: Patrick Stephens Ltd. p. 57.
511:
265:
mounted between cylinder banks, one serving each bank. Four
427:. Vol. XXI, no. 30. 25 July 1929. pp. 773–4.
716:
548:
299:: Forged steel barrels, with closed, flat ends.
475:. Fallbrook, California: Aero Publishers, Inc.
523:
473:Italian Civil and Military Aircraft 1930-1945
8:
445:. London: David & Charles. p. 69d.
269:per cylinder, supplied by two Marelli MF.12
530:
516:
508:
466:
464:
462:
490:. New York: Portland House. p. 384.
436:
434:
413:
411:
382:
317:, with a second scraper ring below it.
18:
7:
443:Jane's All the World's Aircraft 1938
419:"OLYMPIA: some of the stands - Fiat"
16:1920s Italian piston aircraft engine
392:World Encyclopaedia of Aero Engines
14:
323:: Each six throw, seven bearings.
144:, were still in service in 1939.
97:for fifteen years to power their
27:
488:Jane's Encyclopedia of Aviation
486:Taylor, Michael J. H. (1989).
1:
762:1920s aircraft piston engines
191:water cooled 60° upright V-12
89:was an Italian water-cooled
471:Thompson, Jonathan (1963).
251:per cylinder. Housed under
788:
279:One delivery pump and two
26:
21:
371:List of aircraft engines
261:Three water heated Fiat
140:in 1925. Some, used as
313:above a fully floating
305:: Aluminium alloy, two
183:General characteristics
390:Gunston, Bill (1989).
112:Design and development
767:Fiat aircraft engines
218:54.48 L (3,324 cu in)
772:V12 aircraft engines
441:Grey, C.G. (1972).
283:, in a single unit.
132:Operational history
39:Water cooled V-12
749:
748:
351:Compression ratio
307:compression rings
227:841 kg (1,854 lb)
138:Regia Aeronautica
95:Regia Aeronautica
83:
82:
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542:aircraft engines
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291:centrifugal pump
209:200 mm (6.29 in)
200:170 mm (5.31 in)
79:several hundred
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31:
19:
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718:Turbine engines
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287:Cooling system:
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91:aircraft engine
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45:National origin
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550:Piston engines
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281:scavenge pumps
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249:exhaust valves
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170:Specifications
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122:cylinder banks
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60:Fiat Aviazione
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365:Related lists
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344:Power output:
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56:Manufacturer
55:
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452:0715-35734-4
442:
422:
391:
385:
364:
363:
349:
343:
326:
320:
311:scraper ring
302:
296:
289:water, with
286:
276:
263:carburettors
259:Fuel system:
258:
237:
221:
214:Displacement
212:
203:
194:
188:
177:
174:
173:
148:Applications
135:
126:
115:
86:
84:
75:Number built
338:Performance
315:gudgeon pin
277:Oil system:
267:spark plugs
756:Categories
377:References
321:Crankshaft
239:Valvetrain
232:Components
223:Dry weight
66:First run
333:end caps.
331:duralumin
327:Crankcase
297:Cylinders
253:aluminium
175:Data from
164:Fiat BR.4
159:Fiat BR.3
154:Fiat BR.2
99:Fiat BR.2
87:Fiat A.25
360:See also
309:and one
271:magnetos
255:casings.
247:and two
142:trainers
303:Pistons
106:bombers
69:c.1924
703:SA8/75
494:
449:
424:Flight
398:
355:5.25:1
205:Stroke
245:inlet
189:Type:
50:Italy
36:Type
22:A.25
741:4700
736:4301
731:4004
726:4002
708:S.55
698:AS.8
693:AS.6
688:AS.5
683:AS.3
678:AS.2
673:AN.1
668:A.82
663:A.80
658:A.78
653:A.76
648:A.74
643:A.70
638:A.60
633:A.59
628:A.58
623:A.55
618:A.54
613:A.53
608:A.50
603:A.30
598:A.25
593:A.24
588:A.22
583:A.20
578:A.18
573:A.15
568:A.14
563:A.12
558:A.10
539:Fiat
492:ISBN
447:ISBN
396:ISBN
196:Bore
118:A.20
103:BR.3
101:and
85:The
758::
461:^
433:^
421:.
410:^
108:.
531:e
524:t
517:v
500:.
455:.
404:.
353::
293:.
273:.
241::
225::
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207::
198::
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
