Ground Cue

Overview

The Ground Cue provides specialized motion cueing optimized for ground operations in aircraft simulations. It works in conjunction with the Primary Cue, automatically transitioning between ground-based and airborne motion profiles based on the aircraft’s altitude.

Key features:

• Dedicated motion profile for ground operations (taxi, takeoff, landing)
• Smooth transition between ground and air motion profiles
• Configurable altitude-based blending
• Aircraft-specific (not active for other vehicle types)
• Requires valid altitude telemetry data from simulation

Controls

Altitude Settings

• Ground Altitude: Set this to match the reported altitude when aircraft is on the ground
  • Check “Source Data” display while on runway to determine correct value
  • Some simulators report non-zero altitudes for ground level
• Air Altitude: Defines height at which Primary Cue takes full control
  • Motion smoothly transitions between Ground/Primary profiles between these altitudes

Axis Controls

Each motion axis has identical controls to the Primary Cue:

• Enable/Disable: Toggle individual axis activity
• Link to Primary: Inherit settings from Primary Cue profile
• Isolate: Temporarily disable all other axes for focused tuning
• Smoothness: Filter strength
• Washout: Return-to-center speed
• Gain: Motion intensity multiplier

Tuning Tips

Initial Setup

1. Set Ground Altitude first:
   • Park aircraft on runway
   • Check Source Data altitude reading
   • Set Ground Altitude to match
2. Set Air Altitude:
   • Recommended 10-50m above Ground Altitude
   • Larger difference = more gradual transition
   • Smaller difference = quicker transition

Ground Profile Tuning

1. Start with Primary Cue settings
2. Modify for ground operations:
   • Reduce gains for smoother taxi
   • Increase smoothness to dampen runway bumps
   • Adjust washout for better brake/acceleration feel

Testing

1. Test full takeoff sequence:
   • Ground handling
   • Rotation
   • Initial climb
2. Verify smooth transition to Primary Cue
3. Test landing sequence:
   • Approach
   • Touchdown
   • Rollout

Common Adjustments

• Rough Ground Handling: Increase smoothness, reduce gains
• Weak Brake Feel: Increase surge axis gain
• Harsh Touchdown: Adjust heave axis smoothness
• Poor Directional Feel: Fine-tune yaw/sway settings

Remember: Changes take effect in real-time, allowing immediate feedback during tuning.