The opto-kinetic cervical reflex during formation flight

Area of Science:

• Aviation psychology
• Human factors in flight
• Aerospace physiology

Background:

• Spatial disorientation is a significant risk during weather formation flight.
• The opto-kinetic cervical reflex (OKCR) uses visual cues to stabilize spatial orientation.
• Understanding OKCR is crucial for flight safety, especially in challenging conditions.

Purpose of the Study:

• To investigate the opto-kinetic cervical reflex (OKCR) during formation flight.
• To examine the influence of field of view (FOV) on OKCR under visual meteorological conditions (VMC) and instrument meteorological conditions (IMC).

Main Methods:

• Two experiments were conducted with 26 pilots in a simulated flight environment.
• Experiment I assessed head tilt relative to aircraft bank with unrestricted FOV.
• Experiment II evaluated head tilt under varying FOV conditions (40, 60, and 100 degrees).

Main Results:

• Pilots demonstrated significant OKCR during VMC formation flight maneuvers.
• No significant difference in head tilt was observed between solo and formation VMC flight.
• Pilots did not exhibit OKCR during IMC formation flight, and FOV did not significantly alter OKCR.

Conclusions:

• The OKCR is present in VMC formation and solo flight but is reduced compared to low-level navigation.
• The absence of OKCR in IMC flight can lead to sensory conflicts during cloud transitions.
• Findings highlight the impact of OKCR on formation flight safety in varying weather conditions.