The Avon 200
8Pages

Using the latest aero engine technology

Technology heritage Advanced technology used in the latest generation of Rolls-Royce civil and military engines is incorporated into the new, higher power Avon 200 to upgrade the proven performance of the Avon gas generator. The result is an industrial engine with: • Higher power capability • Improved thermal efficiency • Extended component life • Reduced maintenance costs • Improved environmental impact

Improving performance Most operators know the Avon gas generator. They know its performance specification and its reputation for unsurpassed reliability. With over 60 million operating hours in industria applications, the Avon gas generator has proven time and again that it is the class leader for reliability. Operators continue to plan their projects based on the Avon's reliability Today, Rolls-Royce is offering Avon operators more value than ever by bringing to market the Avon 200 conversion. This engine sets new standards of power, efficiency, life cycle costs and environmenta The Avon...

Design benefits Turbine blades The Avon 200 applies cutting edge technology proven in other Rolls-Royce engine models to the turbine section of the Avon gas generator. This provides increased power, efficiency, component life and reliability without increasing the exhaust gas temperature. These improvements are achieved by making material, sealing, geometry and cooling changes to the HP, IP and LP turbine sections. Advanced aerodynamic design for NGVs ll he skewed cutting fir tree blade roots are replaced with an axial T cut, two-lobe design to reduce peak stress concentrations. This...

Turbine blades Disc and turbine casings • Profiled end walls and 3D aerodynamic design techniques improve stage efficiency, overall unit power and heat rate wall improve turbine power and heat rate Single crystal materia cooling, improving Nozzle guide vanes (NGV) improve efficiency Brazed assembly with 3D external aerodynamic design and profiled end wall with reduced cooling air consumption improves stage efficiency and overall cycle • IP and LP NGVs are changed from hollow to solid aerofoils for a more robust design. • Disc head geometry has been modified to provide lower stresses. This...

Combustion system • The Swirler burner configuration is the standard combustion system used with the Avon 200, which has demonstrated extensive service experience. • Swirler burner technology helps reduce combustion instability associated with liguid hydrocarbon carryover from the gas fuel. This gives smoother combustion, extended discharge nozzle life and reduces burner fouling, giving improved availability. • Increased reliability and reduced overhaul costs can also be expected by minimising the effect of high cycle fatigue (HCF) on turbine blades and discs. • In addition, significant...

Fuel savings and production value • Engine conversion • Fuel control system changes • Evaluate package and drive train • Ideally at time of overhau • The benefits of increased power and efficiency are guantified in Complementary Upgrades • RT48S power turbine conversion (ES4001) • Eddy current speed probe (ES2004) • Lube oil console (ES2007) - Phase 1 and 1.5 engine conversion • Rotary Variable Differential Transducers (RVDT) (ES2008) • Closed loop VIGV control (ES2009) • New discharge nozzles with thermal barrier coating (Mod 4604) Fuel savings between overhauls Production value...

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