A transient bleed valve (TBV) is used to expand the stall margin of a turbine engine’s compressor by controlling the outlet of bleed air from the engine’s compressor.
The transient bleed valve (TBV) controls the bleed air amount of the last stage of the high-pressure compressor (HPC) to expand the stall margin of the HPC during engine starting and rapid acceleration. The TBV is a fuel-powered, two-position (failsafe open), butterfly-type air valve whose position is controlled by a remote solenoid. A dual-channel transducer in the actuator can provide feedback on the displacement and feedback to the engine electronic computer (EEC) to monitor the actuator’s position.
APPLICATIONS:
Commercial aircraft
FEATURES AND ATTRIBUTES:
• Effective control of bleed air from engine compressor
• Bearings construction is ceramic and stainless steel.
• Vane sleeve construction is ceramic.
OPTIONAL FEATURES:
Implementation of LVDT transducer can provide feedback to EEC on actuator position.
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SP
Brasil
12247-015
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