Rolls-Royce RB.183 Tay
Tay is the name of two jet engines of the British manufacturer Rolls- Royce.
First Rolls- Royce Tay on the basis of the Nene engine
The first Tay -called engine ( Rolls- Royce RB.44 ), a turbojet, based on the Rolls- Royce Nene and was used during the 1950s. Basically, it is a Nene engine, which was equipped with an afterburner. At Pratt & Whitney, a license was sold and the engine came as Pratt & Whitney J48 Grumman F9F Panther and the Lockheed F-94 are used. Another license was awarded to Hispano-Suiza marketed the engine as the Hispano -Suiza Verdon. It came in the Dassault Mystère IV used. The nominal thrust 27.8 kN.
Second Rolls-Royce Tay on the basis of the Spey engine
The second Tay engine is based on the Rolls- Royce Spey turbofan, and is a. It was first approved in 1986. However, the low-pressure components come here from Rolls -Royce RB211. This could by-pass ratio over the Spey be increased to 3. There is or was in the Gulfstream IV ( Tay 611-8, 62 kN), the Fokker 70 ( Tay 620, 62 kN) and Fokker 100 ( 620 Tay, 62 kN or Tay 650, 67 kN ) was used. Furthermore, conversion kits exist on the Tay engine for the BAC 1-11 ( Tay 650, 67 kN), Boeing 727 ( 651 Tay, 64 kN) and Douglas DC -9 ( Tay 651, 64 kN). The engine is still in production. The latest version of Tay 611-8 ( Tay 611- 8C) is equipped with an EEC. It is the only engine in this series that is not hydro- mechanically controlled, but with the help of the FADEC. It therefore has a modified fuel system.
The modernized version of the Tay 611-8 Tay is the 611- 8C. It has an air mass flow rate of 416 lbs / sec and a thrust of 13,850 pounds at sea level. It is flat -rated to ISA 15 ° C. The by-pass ratio was 3.2:1. Therefore, it is a turbo - fan engine with medium bypass ratio. The compressor includes a single-stage fan, a three -stage low-pressure compressor and a 12-stage high pressure compressor in the axial design. The compression ratio is 16:1. The combustion chamber consists of fire tubes 10 which are connected to each other by Durchzündrohre. To her, the 2-stage high pressure turbine and the 3- stage low- pressure turbine connects. To be cooled, only the first turbine stage and the second stage vanes. The turbine inlet temperature at take -off (full load) is 1390K. The fuel system is controlled by the EEC and consists of a low-pressure pump, a high pressure pump, the Fuel - Cooled Oil Cooler ( FCOC ) and the Fuel Metering Unit ( FMU ). The start-up system consists of a turbine that is mounted to the Airstarter External gearbox and uses 28PSI compressed air. The control of the boot process assumes the EEC. It regulates the amount of air starting on the Starter Air Valve (SAV ). The curb weight of this engine is 3390 lbs. The largest case diameter is 48.8 ". The fan diameter measures 44.8 " and the length of the nose cone to Exhaust Cone 102. " This engine is equipped with a hydraulically confirmed Thrust Reverser ( TRU) equipped which is electronically controlled by the EEC., The in cruise delivered thrust is 1900 lbs at 43,000 ft and a speed of 0.8 Mach., the SFC (specific fuel consumption ) in these conditions is 0.707 lbs / hr / lbs. direction of rotation of the shaft is seen from behind counterclockwise ( CCW).
The Tay engine has 7 main bearings. Ball bearings are used for thrust. To be able to store both waves, are each 2 ball bearings in the diffuser case. The remaining 5 bearings are roller bearings. They are suitable to receive the high-pressure and low-pressure turbine because it can compensate for the thermal expansion.
The engine is divided into 7 modules. Module 01 includes those equipped with 22 blades fan This is followed by the module 02, the 3- stage low- pressure compressor connects. Module 03 refers to the high pressure compressor. Module 04 corresponds to the combustor and high pressure turbine. The low-pressure turbine module 05 is designated.