Adaptive Flight Simulation Assistance for Pilot Induced Oscillations
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Solution Overview
Problem
Flight simulators introduce additional delays and provide incomplete sensory cues, leading to Pilot Induced Oscillations (PIOs) and simulator sickness, making it difficult for pilots to master maneuvers like hovering, autorotation, and instrument landing, especially for student pilots.
Innovation Solution
A flight simulation assistance method and system, 'SimAssist,' that monitors and filters aircraft body rate signals to calculate a gain coefficient, applying artificial damping and nudging forces to correct deviations from ideal trajectories, thereby mitigating PIOs and providing adaptive assistance to pilots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flight simulators are used for training, then training safety is improved, but Pilot Induced Oscillations occur due to transport delays and incomplete sensory cues
Solution Approach 1:
The patent introduces an intermediary assistance system that mediates between the pilot and the simulated aircraft. This system includes a sensor that detects aircraft state and an actuator that applies corrective forces to the control inputs, acting as a bridge to compensate for the delays and sensory deficiencies in the simulation environment.
Solution Approach 2:
The patent implements a feedback mechanism where the aircraft state is continuously sensed and used to generate corrective assistance forces. The assistance system monitors the aircraft response and adjusts the control inputs in real-time to counteract oscillations, creating a closed-loop control system that compensates for simulation delays.
2Stability of the object's composition
If transport delay is reduced in flight simulator, then stability margin is improved, but simulation computation time and complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-computing and storing aircraft response characteristics and sensory cue models. The assistance system uses these pre-computed data to quickly generate corrective forces without requiring complex real-time simulations, thus maintaining stability while reducing computational burden.
Solution Approach 2:
The patent changes parameters by adjusting the assistance level and damping coefficients based on flight conditions. The system dynamically modifies control parameters to optimize stability margin while keeping computation efficient, adapting to different flight regimes without requiring full re-simulation.
3Measurement precision
If sensory cues fidelity is improved in flight simulator, then pilot perception accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts only the essential sensory cues needed for stable flight control rather than providing complete high-fidelity sensory reproduction. The assistance system focuses on delivering critical information about aircraft state and required corrections, omitting non-essential sensory details to reduce complexity while maintaining perception accuracy for flight tasks.
Data Source
AI summary
A simulator assistance method and system adaptively mitigates Pilot Induced Oscillations (PIOs) with respect to axes of rotation about the vehicle's center of mass. The method detects PIOs in a body rate signal by band pass filtering the body rate signal, and provides an adaptive response based on the amplitude of the body rate signal within the frequency band.