Williams FJ33

The Williams FJ33 is an American family of turbofan jet engines intended for use in very light jet aircraft. The FJ33 is a scaled-down version of the FJ44 engine. The FJ33-5A is the latest version certified in June 2016.[2]

FJ33
Type Turbofan
National origin United States
Manufacturer Williams International
First run 1998 [1]
Major applications Cirrus Vision SF50
Diamond D-Jet
Developed from Williams FJ44

Design

Engine configuration is a single stage fan, with booster stage, driven by a two-stage LP turbine, supercharging a centrifugal HP compressor, driven by a single stage HP turbine.[3] An annular combustor is featured.

The FJ33 has a dry weight of less than 300 lb (140 kg), overall diameter of 18.36 in (466 mm), 38.43 in (976 mm) overall length, and produces between 1,000 lbf (4,400 N) and 1,800 lbf (8,000 N) static thrust. Specific fuel consumption at 1,200 lbf (5,300 N) thrust (SLS, ISA) is understood to be 0.486 lb/(lbf⋅h) (13.8 g/(kN⋅s)).

Variants
  • FJ33-1
  • FJ33-2
  • FJ33-3
  • FJ33-4-A11
  • FJ33-4
  • FJ33-4-17M
  • FJ33-4-18M
  • FJ33-4A-19
  • FJ33-5A
  • Jahesh-700

Iranian Reverse engineered variant serving as high endurance UAV powerplant.[4][5]

Applications

Specifications (FJ33-5A)

General characteristics

  • Type: turbofan
  • Length: 38.43 in (976 mm)
  • Diameter: 18.36 in (466 mm),
  • Dry weight: less than 300 lb (140 kg)

Components
  • Compressor: 2 spool, 1-stage fan and 3-stage LP axial, 1 centrifugal
  • Turbine: 2 spool, 1 HP and 2 LP

Performance

See also

Related development

Related lists

References
  1. "P&WC unveils light jet study". Flight International. 28 October 1998.
  2. "Williams International FJ33-5A Turbofan FAA-Certified". 8 June 2016. Retrieved 10 June 2016.
  3. https://sistemas.anac.gov.br/certificacao/Produtos/Espec/EM-9303-05i.pdf
  4. "Iran Flaunts New Missile and Jet Engine Technology". The Washington Institute. Retrieved 2022-06-10.
  5. "Iran's 1st turbofan engine: Jahesh-700". iranpress.com. Retrieved 2022-06-10.
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