Alfa Romeo 125

Jupiter, 125, 126, 127, 128, 129 and 131
A 610 kW (820 hp) Alfa Romeo 128 R.C.18 from ca1939.
Type Piston aircraft engine
Manufacturer Alfa Romeo
First run 1930s
Number built ~11,000


Alfa Romeo built/designed a range of aircraft engines based on the Bristol Jupiter and Bristol Pegasus designs, designated Alfa 125, Alfa 126, Alfa 127, Alfa 128, Alfa 129 and Alfa 131. All these essentially similar engines were mainly fitted to Italian bombers in World War II, Alfa Romeo building around 11,000 units between 1934 and 1944 [1]

Design and development

Alfa Romeo adapted the Jupiter / Pegasus (which are very closely related) to metric measurements, local materials and indigenous equipment.

Variants

(The Italian engine designation system includes a suffix indicating major components or attributes. The most common were R for Riduttore - reduction gear and C for Compressore - compressor/supercharger, followed by a number indicating the rated altitude in hundreds of metres, two speed superchargers were indicated by a double figure such as 10/34).

Alfa Romeo Jupiter
The standard 313 kW (420 hp) Jupiter engine built under licence from the Bristol Aeroplane Company.
Main article: Bristol Jupiter
Alfa 125 R.C.10
rated at 1,000 m (3,300 ft)
Alfa 125 R.C.35
1934 485 kW (650 hp) rated at 3,500 m (11,500 ft)
Alfa 126 R.C.10
1935 Civilian version of 126 R.C.34 559–597 kW (750–801 hp) rated at 1,000 m (3,300 ft)
Alfa 126 R.C.32
rated at 3,200 m (10,500 ft)
Alfa 126 R.C.34
1935 507–582 kW (680–780 hp) rated at 3,400 m (11,200 ft)
Alfa 127 R.C.50
rated at 5,000 m (16,000 ft)
Alfa 127 R.C.55
1937 560 kW (750 hp) rated at 5,500 m (18,000 ft)
Alfa 128 R.C.18
641–717 kW (860–962 hp) rated at 1,800 m (5,900 ft)
Alfa 128 R.C.21
1938 708 kW (949 hp) rated at 2,100 m (6,900 ft)
Alfa 129 R.C.32
rated at 3,200 m (10,500 ft)
Alfa 131 R.C.14/50 
1943 Two speed supercharger, rated at 1,400 m (4,600 ft) in low gear and 5,000 m (16,000 ft) in high gear.

Applications

Specifications (Alfa 128 R.C.21)

Data from Aircraft Engines of the World 1945[6] Archivio Storico Alfa Romeo - Volume II[7]

General characteristics

Components

Performance

See also


Related lists

References

Notes

  1. "STORY OF THE ALFA ROMEO FACTORY AND PLANTS page 12" (PDF). enzociliberto.it. Archived from the original (PDF) on 2007-09-29. Retrieved 2007-08-25.
  2. "CAPRONI CA.97". alatricolore.it. Retrieved 2007-09-20.
  3. "AlfaAEREI Collezione Modelli di Marco Rigoni Settembre 2005" (PDF). aerei-italiani.net. Archived (PDF) from the original on 5 June 2007. Retrieved 2007-04-25.
  4. "Macchi M.C.100 - 1939". angelfire.com. Archived from the original on 31 October 2007. Retrieved 2007-09-20.
  5. "The Savoia-Marchetti S.M. 79 Sparviero". xs4all.nl/~fbonne/warbirds. Archived from the original on 17 July 2007. Retrieved 2007-08-27.
  6. Wilkinson, Paul H. (1945). Aircraft engines of the World 1945 (2nd ed.). New York: Paul H. Wilkinson. pp. 288–289.
  7. Archivio Storico Alfa Romeo - Volume II. Torino, November 1998

Bibliography

  • Wilkinson, Paul H. (1945). Aircraft engines of the World 1945 (2nd ed.). New York: Paul H. Wilkinson. pp. 288–289. 
  • Archivio Storico Alfa Romeo - Volume II. Torino, November 1998
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