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UH-60 IPC SYSTEMS

UH-60 IPC SYSTEMS. MIXING UNIT. MIXING UNIT. TLO: To reinforce basic system fundamentals for the UH-60 IPC. MECHANICAL MIXING UNIT. The mixing unit provides mechanical control mixing functions which minimize inherent control coupling and reduce pilot workload. MECHANICAL MIXING UNIT.

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UH-60 IPC SYSTEMS

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  1. UH-60 IPC SYSTEMS MIXING UNIT

  2. MIXING UNIT TLO: To reinforce basic system fundamentals for the UH-60 IPC.

  3. MECHANICAL MIXING UNIT The mixing unit provides mechanical control mixing functions which minimize inherent control coupling and reduce pilot workload.

  4. MECHANICAL MIXING UNIT

  5. MECHANICAL MIXING • Collective to Pitch • Collective to Roll • Collective to Yaw • Yaw to Pitch • Collective to Airspeed to Yaw

  6. COLLECTIVE TO PITCH Compensates for rotor downwash on the stabilator. The mixing unit compensates for this increased downwash by tilting the rotor disk forward, or decreased down wash by tilting the rotor disk aft.

  7. Collective to Roll Compensates for a right rolling moment (translating tendency). It tilts the rotor disk to the left with increased collective and reduces left tilt with decreased collective.

  8. COLLECTIVE TO YAW Compensates for torque effect. An increase in collective causes and increase in tail rotor pitch, while a reduction in collective results in decreased tail rotor pitch.

  9. YAW TO PITCH Compensates for the lift components of the canted tail rotor. With increased pitch in the tail rotor (left pedal), the main rotor disk is tilted aft, and with reduced tail rotor pitch (right pedal), the main rotor disk is tilted forward.

  10. COLLECTIVE-AIRSPEED-YAW Collective to airspeed to yaw mixing helps compensate for the torque effect in addition to collective to yaw mechanical mixing by increasing or decreasing tail rotor pitch by the use of the yaw trim actuator. This is a function of the SAS/FPS computer.

  11. COLLECTIVE-AIRSPEED-YAW Collective to airspeed to yaw varies its inputs to the tail rotor based on both collective position and airspeed signals. From 0-40 knots, electronic coupling is at its maximum input. As airspeed increases above 40 knots, the tail rotor and the cambered vertical fairing become more efficient. Electronic coupling decreases the amount of tail rotor pitch programmed until 100 knots, where no electronic coupling is incorporated. 100% Tail Rotor Mixing 0 knots 40 knots 100 knots

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