Williams FJ33 explained

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.^[1]

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.^[2] An annular combustor is featured.

The FJ33 has a dry weight of less than 300lb, overall diameter of 18.36inches, 38.43inches overall length, and produces between 1000lbf and 1800lbf static thrust. Specific fuel consumption at 1200lbf thrust (SLS, ISA) is understood to be .

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

Iran apparently reverse engineered a variant, and is using it as high endurance UAV powerplant.^{[3] [4]}

Applications

• Adam A700
• ATG Javelin
• Cirrus Vision SF50
• Diamond D-Jet
• Epic Elite
• Flaris LAR01
• Spectrum S-33 Independence
• Sport Jet II
• Eclipse 700

External links

• Williams Product Information FJ33
• List of jets designed to use FJ33

Notes and References

1. Web site: Williams International FJ33-5A Turbofan FAA-Certified. 8 June 2016. 10 June 2016.
2. Web site: EM-9303-05i . sistemas.anac.gov.br.
3. Web site: Iran Flaunts New Missile and Jet Engine Technology . 2022-06-10 . The Washington Institute . en.
4. Web site: Iran's 1st turbofan engine: Jahesh-700 . 2022-06-10 . iranpress.com . en.