A primarily civil engine with demonstrated military service.
The Tay is a two shaft high-bypass ratio engine featuring a wide-chord fan with three more stages of low pressure (LP) compressor and a 12-stage high pressure (HP) compressor driven by a two-stage high pressure (HP) turbine and three-stage low pressure (LP) turbine respectively. It has an annular combustion system consisting of ten combustors. The majority of the bypass duct is constructed in carbon fibre composite material. Cold bypass air and hot exhaust gases are combined in a forced mixer that gives good propulsive efficiency and low noise generation.
The Tay provides the quietest operation in its class and has levels of emissions well below those required for current and future regulations.
It has proven to be an extremely reliable engine and is very durable in demanding short-haul operations.
The Tay 611-8 on the Gulfstream IV-SP aircraft is renowned for its reliability, essential in a military environment. This aircraft is used for VIP transport and multi-role surveillance operations with a number of military customers around the world.
The Tay 650 on the Fokker 100 aircraft and the 651 on the re-engined Boeing 727, provide increased maximum thrust for take-off, climb and cruise, plus efficiency improvements through small increases in fan diameter and an advanced high-pressure turbine.
|Specification||Tay 611-8||Tay 650|
|Basic weight (lb)||2,951||3,340|
|Compressor||4LP, 12HP||4LP, 12HP|
|Turbine||2HP, 3LP||2HP, 3LP|
*Technical data (ISA SLS)
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