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Model 34E94 Variable Exhaust Nozzle (VEN) Power Unit

The Model 34E94 Variable Exhaust Nozzle (VEN) Power Unit provides hydraulic muscle to position and hold the variable exhaust nozzle on augmented models of the GE J85 engine. Weighing only 12 lbs, the 34E94 has a fully variable and flow reversible piston-type high-pressure element, a boost element, a bootstrap accumulator, a filter, various relief valves and a control system. At a drive speed of 7811 RPM, the unit circulates up to 3 GPM in a system containing only one quart of oil.

Model 34E94 VEN Power Unit

Design Features

  • First Goodrich Hydraulic Pump using the superior splayed-axis design
  • First Goodrich VEN Power Unit, combining a servo pump and self-contained accumulator/reservoir in an integrated hydraulic power supply unit package
  • Separate mechanical input and feedback mechanisms for servo control


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