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9902-406

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9902-406 is a VSV control for positioning variable stator vanes on non-airborne gas turbines.
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Technical specifications for 9902-406

  • Manufacturer:
    Woodward
  • Part Number:
    9902-406
  • Product Family:
    Woodward
  • Product Type:
    Variable Stator Vane Control
  • Stock:
    1
  • Controlled element:
    Variable stator vanes
  • Prime mover:
    Non-airborne gas turbine
  • Integrated elements:
    Pump, tachometer, temperature sensor, and servo
  • Manual:
    40110
  • Tariff Code:
    Please confirm the destination before shipping.
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Applications Monitoring Installation Performance

Features:

  • Controlled element: Variable stator vanes
  • Prime mover: Non-airborne gas turbine
  • Integrated elements: Pump, tachometer, temperature sensor, and servo
9902-406 is a VSV control for positioning variable stator vanes on non-airborne gas turbines.

Preventing compressor stall through variable-stator-vane positioning.

Installation check: Rotation — Confirm the drive arrangement before mounting.

Availability is subject to Apter Power inventory and sourcing confirmation.
Verified resources for Woodward 9902-406:
  • Preventing compressor stall through variable-stator-vane positioning.
  • Improving gas-turbine efficiency during reduced-speed operation.
  • Combining speed and temperature inputs in a hydromechanical VSV schedule.
  • Speed input: An integral tachometer senses turbine speed
  • Temperature input: An integral sensor supplies temperature compensation
  • Output: The servo positions the variable stator vanes
  • Drawing: Use the 9902-332/9902-406 outline drawing in manual 40110
  • Rotation: Confirm the drive arrangement before mounting
  • Linkage: Set vane linkage to the turbine manufacturer's limits
  • Stall control: Vane scheduling protects compressor stability
  • Part-load operation: The schedule supports efficient reduced-rpm operation
  • Hydraulic source: The integrated pump supplies actuator pressure
Description
9902-406 is a VSV control for positioning variable stator vanes on non-airborne gas turbines.

9902-406 supports improving gas-turbine efficiency during reduced-speed operation. Check Prime mover — Non-airborne gas turbine; Rotation — Confirm the drive arrangement before mounting.
Alternative Names
9902406 Woodward 9902-406 9902-406 Variable Stator Vane Control
Technical notes
Before ordering 9902-406, confirm controlled element (Variable stator vanes) and the documented installation requirements.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Which controlled element entry belongs to 9902-406?
Required entries are controlled element — Variable stator vanes and prime mover — Non-airborne gas turbine.
What is documented for 9902-406's prime mover?
9902-406 lists prime mover as Non-airborne gas turbine and integrated elements as Pump, tachometer, temperature sensor, and servo.
How is integrated elements specified for 9902-406?
For 9902-406, integrated elements is recorded as Pump, tachometer, temperature sensor, and servo; manual as 40110.
What does 9902-406 list under manual?
This variable stator vane control pairs manual (40110) with controlled element (Variable stator vanes).
Where can 9902-406 be applied in the system?
Application scope: Combining speed and temperature inputs in a hydromechanical VSV schedule.
How should part-load operation be handled for 9902-406?
For this model, the schedule supports efficient reduced-rpm operation.

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