The Progress D-436 is a three-shaft high by-pass turbofan engine developed by the Ukrainian company Ivchenko-Progress. It was initially developed to meet the requirements for late versions of the Yakovlev Yak-42 and the Antonov An-72 in the 1980s. The engine first ran in 1985 and was subsequently certified in 1987. Several variants have been developed and are currently in service with a variety of aircraft.
Design and development
The D-436 engine was developed as a follow on to the Lotarev D-36. The engine took several of its design features from that engine and another Progress engine, the Progress D-18. The D-436 incorporated an updated, higher RPM fan, a lower emissions combustor, and new compressor sections. Several variants of the engine incorporate a FADEC.
D-436KThe "K" variant was the initial model of the engine. It had a bypass ratio of 6.2 and a pressure ratio of 21.0. Proposed for use in the defunct Antonov An-71D-436MThe "M" variant was proposed for use on the Yak-42M.D-436T1The "T1" variant is used on the Tu-334 and has been offered for use on the in-development Tu-414. This variant produces about 93 kN (21,000 lbf) of thrust. It was also proposed for use on the now-defunct An-174.D-436T1-134The "T1-134" variant was proposed as a replacement for the engines on the Tu-134D-436T2The "T2" variant is uprated to 80 kN (18,000 lbf) of thrust and is used on the Tu-334-100D and the Tu-334-200D.D-436TPThe "TP" variant is a specific "maritime" corrosion-resistant version developed for use in the Be-200 amphibious aircraft. This variant produces the same 73 kN (16,000 lbf) of thrust as the "T1" model.D-436T3The "T3" variant added a booster section behind the new wide-chord fan and had a maximum thrust around 93 kN (21,000 lbf). The T3 variant was also considered for the Il-214, but the aircraft's thrust requirements exceeded the max engine thrust of 93 kN (21,000 lbf).D-436-148The "-148" variant was developed specifically for the An-148. This version is derated to 67 kN (15,000 lbf) of thrust for longer engine lifeD-436TXThe "TX" variant uses the same core at the "T3", but includes an updated turbine and a geared fan. It is in the 117–135 kN (26,000–30,000 lbf)class.AI-436T12This derivative engine is being designed for use on the MS-21. It is projected to produce 117 kN (26,000 lbf) of thrust.Antonov An-148Antonov An-72/74Beriev Be-200Tupolev Tu-334Yakovlev Yak-42MData from ivchenko-progress.com, Flight, Jane's Aero Engines and forecastinternational.com
Type: Three-spool high bypass turbofanLength: 3,030 mm (119 in)Diameter: 1,390 mm (55 in)Dry weight: 1,450 kg (3,200 lb)Compressor: Axial flow, 6-stage LP, 7-stage HPTurbine: Single-stage HP, single-stage IP, 3-stage LPMaximum thrust: 75.02 kN (7,650 kgf); (16,859 lbf)Overall pressure ratio: 21.9 : 1Turbine inlet temperature: 1,197 C (2,186 F)Specific fuel consumption: 61 kg/kN/h (0.608 lb/lbf*hr)Thrust-to-weight ratio: 5.6
