Utility Actuation

Kearfott designs and manufactures aircraft utility actuation systems for demanding civil and military aerospace applications. Our linear and rotary electromechanical actuators combine Kearfott precision motors, position sensors, digital controllers and gearing to deliver reliable, high-performance motion control with industry-leading performance-to-weight. Applications include passenger and cargo doors, powered cargo handling, air inlet and cooling doors, valves, latches and locking mechanisms.

Linear
Rotary

Proven Technologies

precision_motors
  • Brushless PM DC
  • Induction
  • Synchronous and Stepper
  • Single and multi-speed resolvers
  • RVDT and LVDT
  • Power stage
  • Loop closure
  • Advanced control algorithms
  • Serial, ARINC, CAN
  • Anti-Backlash
  • Spur Power train
  • Differential and Planetary
  • Epicyclic / power hinge
Linear-Actuator

Datasheet: Utility Actuation

Linear | Aircraft Utility Actuators

Kearfott integrates standard, proven, modules to develop linear utility actuators with several options to accommodate the application needs.

  • Stroke length (25 + IN)
  • Ballscrew/Acme Screw
  • Load holding options: E/M brake and No-back
  • Feedback options include resolver, LVDT/RVDT, custom encoder options
  • Flexible electrical interface
  • Electrical end of stroke indication
  • Mechanical stops
  • Overload clutches
  • Fail-safe architecture
  • High bandwidth operation
  • High efficiency
  • Reliable, maintenance-free operations
  • Extreme thermal, vibration, and shock environment

Rotary | Aircraft Utility Actuators

Kearfott integrates standard, proven modules to develop rotary utility actuators with several options to accommodate the application needs.

  • High power density BLDC and other motor options
  • Multiple position feedback options including RVDT and resolver
  • Multiple communication interface options
  • Environmentally sealed
  • High bandwidth operation
  • Easy integration with control linkages
  • Multiple redundancy options
  • Reliable, maintenance-free operation
  • Extreme thermal, vibration, and shock environment

utility

Datasheet: Utility Actuation

C-130 paratroop door

Aircraft Utility Actuation Applications

  • Passenger and personnel door actuation
  • Cargo door and ramp actuation
  • Powered cargo roller actuation
  • Air scoop, cooling door and air inlet actuation
  • Valve actuation
  • Latch and lock actuation
  • Special-mission and payload door actuation

Why Kearfott for Aircraft Utility Actuation?

Kearfott brings critical actuation technologies together under one roof, combining in-house motors, sensors, electronics and precision gearing to create highly integrated utility actuation solutions. This vertically integrated approach enables Kearfott to tailor proven linear and rotary architectures for demanding civil and military aerospace applications while reducing integration risk and supporting long-term reliability.

  • High-performance actuation: Linear and rotary architectures engineered for high performance-to-weight and demanding aircraft packaging constraints.
  • Built for extreme environments: Designed to operate through severe shock, vibration and temperature conditions with environmental sealing and maintenance-free operation.
  • Integrated sensing and control: Resolver, RVDT, LVDT and encoder feedback options with ARINC, CAN and serial communications interfaces.
  • Mission-ready reliability: Multiple redundancy and fail-safe options, with custom configurations developed from proven motors, sensors, electronics and gearing building blocks.
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