Tumansky RD-9

The Tumansky RD-9 was the first Soviet turbojet engine not based on pre-existing German or British designs. It was a development of the Mikulin AM-5, featuring a new compressor with higher subsonic airflow. The engine completed testing in 1953 and produced 5,732 lbf (25.50 kN) thrust without afterburner. When Sergei Tumansky replaced Alexander Mikulin as the OKB-24's chief designer in 1956, the engine was renamed RD-9. The engine was built under license in China as the WP-6.

Variants and applications

• RD-9A and RD-9AK, non-afterburning versions for the Yak-25 and Yak-26.
• RD-9AF-300 and RD-9AF2-300, afterburning versions for the Yak-27 and Yak-28.
• RD-9B, afterburning version for early MiG-19s.
• RD-9BF-811, afterburning version for later MiG-19s.
• RD-9V, afterburning version used in the Ilyushin Il-40P

The RD-9B was also used in the East German civilian jetliner project Baade 152 in 1958 and 1959. It was replaced when Pirna 014 engines became available.

Specifications (RD-9BF-811)

General characteristics

• Type: Afterburning turbojet
• Length: 5,560 mm (219 in)
• Diameter: 670 mm (26 in)
• Dry weight: 725 kg (1,600 lb)

Components

• Compressor: Axial compressor

Performance

• Maximum thrust:
  
  • 3,000 kgf (6,600 lbf, 29 kN) military power
  • 3,750 kgf (8,300 lbf, 37 kN) with afterburner
  
  
• Specific fuel consumption:
  
  • 104 kg/(h·kN) (1.02 lb/(h·lbf)) military power
  • 169 kg/(h·kN) (1.66 lb/(h·lbf)) with afterburner
  
  
• Thrust-to-weight ratio: 50.8 N/kg (5.2:1)

References

• The Osprey Encyclopedia of Russian Aircraft: 1875-1995, Bill Gunston, ISBN 1-85532-405-9.

External links

RD-9B page on mzak.cz