Daimler-Benz DB 603


Daimler-Benz DB 603
DB 603
Preserved Daimler-Benz DB 603 with cutaway sections.
Type Piston V12 aircraft engine
National origin Germany
Manufacturer Daimler-Benz
First run 1940s
Major applications Messerschmitt Me 410
Dornier Do 217
Focke-Wulf Ta 152
Developed from Daimler-Benz DB 601

The Daimler-Benz DB 603 engine was a German aircraft engine used during World War 2. It was a liquid-cooled in-line 12 cylinder inverted V12 enlargement of the DB 601, which was in itself a development of the DB 600. Production of the DB 603 commenced in May 1942.[1]

The DB 603 powered several aircraft, including the Do 217 N&M, Do 335, He 219, Me 410 and Ta 152C.

Contents

Design and development

The Mercedes-Benz T80 land speed record car, designed by aircraft engineer Josef Mickl with assistance from Ferdinand Porsche and top German Grand Prix racing driver Hans Stuck, incorporated the third prototype DB 603. It ran on pure alcohol with MW injection and was tuned to 3,000 hp (2,200 kW) — enough, it was believed, to propel the aerodynamic three-axle T80 up to 750 km/h on the Dessau autobahn in January 1940 during Rekord Woche (Record/Speed Week). Due to the outbreak of the war in September 1939, the T80 (nicknamed Schwarz Vogel, "Black Bird") never raced. The DB 603 engine was removed from the vehicle for use in fighter aircraft.

Variants

Production versions

DB 603E built in 1944, right-hand side view
  • DB 603A, rated altitude of 5.7 km, B4 fuel
Power (max): 1287 kW (1750 PS) at 2700 rpm at sea level
Combat power: 1162 kW (1580 PS) at 2500 rpm at sea level
  • DB 603AA DB 603A with rated altitude of 7.3 km, B4 fuel
Power (max): 1228 kW (1670 PS) at 2700 rpm at sea level
Combat power: 1162 kW (1580 PS) at 2500 rpm at sea level
  • DB 603E rated altitude of 7.0 km, B4 fuel
Power (max): 1324 kW (1800 PS) at 2700 rpm at sea level
Combat power: 1158 kW (1575 PS) at 2500 rpm at sea level

Prototypes and other versions

  • DB 603D, a DB 603A with propellers rotating counter-clockwise; production unknown
  • DB 603F, a DB 603E with propellers rotating counter-clockwise; production unknown
  • DB 603G (production cancelled)
Power (max): 1397 kW (1900 PS) at 2700 rpm at sea level
Combat power: 1147 kW (1560 PS) at 2700 rpm at sea level
  • DB 603L/LA (prototype with two-stage supercharger, B4 fuel)
Power (max): 1471 kW (2000 PS)
  • DB 603N (prototype with two-stage supercharger, C3 fuel)
Power (max): 2059 kW (2800 PS) at 3000 rpm at sea level
Continuous: 1420 kW (1930 PS) at 2700 rpm at sea level
  • DB 603S (DB 603A with experimental TK-11 turbo-supercharger)
Power (max): Not known.
  • DB 613 Series of experimental "power system" coupled side-by-side twinned DB 603s, arranged as the DB 606 and DB 610 had been previously, and meant to replace the 606 and 610, in prototype form only from March 1940 through 1943.
Power (max): Not known.
  • DB 614 a 2000hp development.
  • DB 615 Coupled DB 614 engines
  • DB 617 A long-range derivative of the DB603
  • DB 618 Coupled DB617 engines
  • DB 622 A DB 603 with a two-stage super charger and single stage turbocharger
  • DB 623 A DB603 with twin turbochargers
  • DB 624 A DB 603 with a two-stage super charger and single stage turbocharger
  • DB 626 A DB603 with twin turbochargers and intercooler
  • DB 627 The DB603 fitted with a two-stage supercharger and after-cooler.
  • DB 631 An abandoned three stage supercharged DB603G.
  • DB 632 A projected development of the DB603N with contra-rotating propellers.

All power data is given in metric horsepower as stated per manufacturer. Power (max) is Takeoff and Emergency power (5-min-rating), combat power is climb and combat power (30-min rating), continuous is without time limit.

Applications

Specifications (DB 603A)

Data from Jane's[3]

General characteristics

  • Type: 12-cylinder liquid-cooled supercharged inverted Vee aircraft piston engine
  • Bore: 162 mm (6.38 in)
  • Stroke: 180 mm (7.09 in)
  • Displacement: 44.52 L (2,716.9 in3)
  • Length: 2610.5 mm (102.8 in)
  • Diameter: 830 mm (32.7 in)
  • Dry weight: 920 kg (2,030 lb)

Components

Performance

See also

Related development

Comparable engines
Related lists

References

Notes

Bibliography

  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
  • Jane's Fighting Aircraft of World War II. London. Studio Editions Ltd, 1989. ISBN 0-517-67964-7
  • Neil Gregor Daimler-Benz in the Third Reich. Yale University Press, 1998

External links


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