Externally, the new type had slightly larger air intakes and steel inlet guide vanes that allowed an increase in operating temperature from, enabling a maximum speed of Mach 2.2.
32.
Critically, melting of ash, particularly volcanic glass, can result in accumulation of resolidified ash on turbine nozzle guide vanes, resulting in compressor stall and complete loss of engine thrust.
33.
The subdivided regulating unit, the guide vane system in the turbine's upstream section, provides flexible operation, with 33, 66 or 100 % output, depending on the flow.
34.
The Variable Turbine Geometry incorporates guide vanes on the turbine wheel that change their angle of attack with exhaust speed, reducing Honda Legend Wing Turbo, such variable geometry turbines were previously only available on diesel engines.
35.
Today, a conventional turbofan featuring a T-staged fan would have an overhung fan rotor ( without any inlet guide vanes ), followed by one or more T-stages supercharging the core stream alone.
36.
Formed in March 1997, IECO's core business is the repair and overhaul of the Rolls-Royce Trent and RB211 Nozzle Guide Vanes and Compressor Stators using state-of-the-art technology.
37.
Its original USAF designation was J47-21, but with innovative features including variable inlet guide vanes, double-shell ( inner and outer ) combustor case and 50 % greater airflow was redesignated the J73.
38.
Turbomeca S . A . and its U . S . subsidiary, Turbomeca Engine Corp ., knew of the problem with the TU-76 nozzle guide vane since 1986, when they told the French military.
39.
The engine has a 14-stage axial-flow compressor, producing compression ratios between 9 : 1 to 13 : 1 depending on altitude, also controlled by variable inlet guide vanes and blow-off valves.
40.
Most kits also make further modifications to the exhaust with acoustically treated tailpipes, revised inlet nacelles and guide vanes, all of which reduce forward propagating high-pitched noise caused by the small, high-speed fan.
