The Fiat A.22 was an Italian water-cooled aircraft engine from the 1920s. It produced 425 kW (570 hp) and powered several absolute world distance records as well as commercial passenger flights.
During the second half of the 1920s Fiat introduced several water-cooled aircraft engines, including the A.20, A.22, A24, A.25 and A.30. They were all upright V-12s with 60° between the cylinder banks; capacities ranged between 18.7 L and 54.5 L (1,141-3,326 cu in) and power outputs between 320 kW and 745 kW (430-1,000 hp).[1]
Producing 425 kW (570 hp) from 27.5 L (1,678 cu in),[2] the A.22 was towards the middle of these ranges. 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.[3] The A.22 was first run in 1926 and a "few hundred" were built.[1]
The A.22 was best known for its contribution to some world long distance record flights[2] made by the single engine landplane Savoia-Marchetti S.64, which used the specially adapted A.22 T. version. Between 31 May and 2 June 1928 this aircraft flew non-stop for 7,665 km (4,763 mi) to capture the world closed circuit distance record. The flight lasted 58 hr 34 min; the two crew, Capt. Arturo Ferrarin and Major Del Prete took turns as pilot.[4] A month later, the same crew set a new world straight-line distance record of 7,187 km (4,467 mi), flying from Italy to Brazil in 47 hr 55 min. The closed circuit record was later taken by the French but a slightly revised S.64bis recovered it for Italy with a distance of 8,187 km (5,088 mi) flown in 67 hr 13 min on 31 May-2 June 1930.[4]
Dry weight: including propeller hub, 455 kg (1,004 lb)
Components
Valvetrain: Two overhead camshafts, driven via enclosed, inclined shafts. The cams operate two inlet and two exhaust valves per cylinderHoused under aluminium casings.
Fuel system: Twin water heated Fiat carburettors mounted between cylinder banks, one serving each bank. Two spark plugs per cylinder, placed horizontally and opposite each other, supplied by two Marelli MF.12 magnetos.
Oil system: One delivery pump and two scavenge pumps, in a single unit.
^ abcGunston, Bill (1989). World Encyclopaedia of Aero Engines (2 ed.). Wellingborough: Patrick Stephens Ltd. p. 57. ISBN1-85260-163-9.
^ abc"OLYMPIA: some of the stands - Fiat". Flight. Vol. XXI, no. 30. 25 July 1929. pp. 773–4.
^ abcdGrey, C.G. (1972). Jane's All the World's Aircraft 1938. London: David & Charles. pp. 68–9d. ISBN0715 35734 4.
^ abcdThompson, Jonathan (1963). Italian Civil and Military Aircraft 1930-1945. Fallbrook, California: Aero Publishers, Inc.
^ abcdeGrey, C.G., ed. (1928). Jane's all the World's Aircraft 1928. London: Sampson Low, Marston & company, ltd. pp. 45d–47d.
January 30, 2023
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The Fiat A 22 was an Italian water cooled aircraft engine from the 1920s It produced 425 kW 570 hp and powered several absolute world distance records as well as commercial passenger flights A 22Fiat A 22 TType Water cooled V 12National origin ItalyManufacturer Fiat AviazioneFirst run 1926Number built several hundred 1 Developed into Fiat AS 2 Contents 1 Design and development 2 Operational history 3 Variants 4 Applications 5 Specifications A 22 R 5 1 General characteristics 5 2 Components 5 3 Performance 6 See also 7 ReferencesDesign and development EditDuring the second half of the 1920s Fiat introduced several water cooled aircraft engines including the A 20 A 22 A24 A 25 and A 30 They were all upright V 12s with 60 between the cylinder banks capacities ranged between 18 7 L and 54 5 L 1 141 3 326 cu in and power outputs between 320 kW and 745 kW 430 1 000 hp 1 Producing 425 kW 570 hp from 27 5 L 1 678 cu in 2 the A 22 was towards the middle of these ranges 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 3 The A 22 was first run in 1926 and a few hundred were built 1 The A 22 was developed into the Fiat AS 2 and AS 3 Schneider Trophy race engines 3 Operational history EditThe A 22 was best known for its contribution to some world long distance record flights 2 made by the single engine landplane Savoia Marchetti S 64 which used the specially adapted A 22 T version Between 31 May and 2 June 1928 this aircraft flew non stop for 7 665 km 4 763 mi to capture the world closed circuit distance record The flight lasted 58 hr 34 min the two crew Capt Arturo Ferrarin and Major Del Prete took turns as pilot 4 A month later the same crew set a new world straight line distance record of 7 187 km 4 467 mi flying from Italy to Brazil in 47 hr 55 min The closed circuit record was later taken by the French but a slightly revised S 64bis recovered it for Italy with a distance of 8 187 km 5 088 mi flown in 67 hr 13 min on 31 May 2 June 1930 4 The A 22R powered more conventional airline flights in a Savoia Marchetti S 66 three engine flying boat operated by Ala Littoria on the Rome Cagliari Tripoli and Rome Athens Alexandria routes 4 Variants Edit Fiat A 22 R From Jane s all the World s Aircraft 1938 3 A 22 un geared compression ratio 5 5 1 5 A 22 R R Riduttori reduction gear Geared 0 5 1 compression ratio 5 5 1 5 A 22 S High compression compression ratio 6 1 5 A 22 AQ AQ Alta Quota high altitude Direct drive compression ratio 7 5 1 5 A 22 AQ R AQ R Alta Quota Riduttori high altitude geared High altitude 0 5 1 geared engine compression ratio 7 5 1 5 A 22 T Special version for Savoia Marchetti S 64 Applications EditFrom Thompson 4 Savoia Marchetti S 64 Savoia Marchetti S 66Specifications A 22 R EditData from Flight 25 July 1929 pp 773 4 2 and Jane s All the World s Aircraft 1938 3 General characteristics Type water cooled 60 upright V 12 Bore 135 mm 5 31 in Stroke 160 mm 6 29 in Displacement 27 5 L 1 678 cu in Dry weight including propeller hub 455 kg 1 004 lb Components Valvetrain Two overhead camshafts driven via enclosed inclined shafts The cams operate two inlet and two exhaust valves per cylinderHoused under aluminium casings Fuel system Twin water heated Fiat carburettors mounted between cylinder banks one serving each bank Two spark plugs per cylinder placed horizontally and opposite each other supplied by two Marelli MF 12 magnetos Oil system One delivery pump and two scavenge pumps in a single unit Cooling system water with centrifugal pump Reduction gear spur gear lubricated via oil spout Cylinders Forged steel barrels with closed flat ends Pistons Aluminium alloy two compression rings and one scraper ring above a fully floating gudgeon pin with a second scraper ring below it Crankshaft Each six throw seven bearings Crankcase Each an aluminium casting split on crankshaft centre line Bolted on duralumin end caps Performance Power output normal 425 kW 570 hp at 1 900 rpm at sea level Maximum 462 kW 620 hp at 2 100 rpm Compression ratio 5 5 1See also EditRelated lists List of aircraft enginesReferences Edit Wikimedia Commons has media related to Fiat A 22 a b c Gunston Bill 1989 World Encyclopaedia of Aero Engines 2 ed Wellingborough Patrick Stephens Ltd p 57 ISBN 1 85260 163 9 a b c OLYMPIA some of the stands Fiat Flight Vol XXI no 30 25 July 1929 pp 773 4 a b c d Grey C G 1972 Jane s All the World s Aircraft 1938 London David amp Charles pp 68 9d ISBN 0715 35734 4 a b c d Thompson Jonathan 1963 Italian Civil and Military Aircraft 1930 1945 Fallbrook California Aero Publishers Inc a b c d e Grey C G ed 1928 Jane s all the World s Aircraft 1928 London Sampson Low Marston amp company ltd pp 45d 47d Retrieved from https en wikipedia org w index php title Fiat A 22 amp oldid 1115754226, wikipedia, wiki, book, books, library,
