BMW 028

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The BMW 028 (project no. 3320) was the design of a propeller turbine engine (PTL engine) made by the manufacturer BMW Flugmotorenbau GmbH in 1941/42. What was required was an engine that was highly economical (especially at partial load) for use in aircraft with long range and high cruising speed. When using PTL engines, fuel savings of 10 to 20% were promised even in high-speed flights .

The BMW 028 should achieve a shaft power of 3456 kW (4700 PS ), which together with the remaining thrust would have resulted in a shaft power of approx. 4830 kW (6570 PS) at the start. At a speed of 640 km / h at an altitude of 6100 m, it should deliver a wave power of 5840 kW (7940 PS). Two counter-rotating coaxial propellers were planned.

A Heinkel He 177 would have been used for flight tests . The Messerschmitt Me 264 would have come into question as an operational aircraft .

Due to changed priorities in the air force command, the PTL project was changed into a turbine air jet engine project ( BMW 018 ) as early as 1942 . Not a single prototype has been built.

Technical specifications

  • Diameter: 1250 mm
  • Weight (dry) with propeller system: 3600 kg
  • Shaft comparison power at the start: 4830 kW (6570 PS)
  • Air flow: 44 kg / s
  • Specific consumption: approx. 1.0 kg / kp / h

literature

  • Kyrill von Gersdorff, Kurt Grasmann: Die deutsche Luftfahrt , Volume 2: Flugmotoren und Strahltriebwerke, Bernard & Graefe Verlag Munich 1995, 3rd edition, ISBN 3-7637-6107-1 , p. 254

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