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The giant hand phenomenon.

T J Lyons¹, C G Simpson

¹U.S.A.F. Clinic, Spangdahlem Air Base, Federal Republic of Germany.

Aviation, Space, and Environmental Medicine

|January 1, 1989

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Spatial disorientation, known as the "giant hand" phenomenon, can cause aircraft accidents. Inadequate aircrew training for this issue necessitates further investigation and improved simulation methods for aviation safety.

Area of Science:

Aviation Psychology
Human Factors in Flight Safety
Spatial Disorientation Research

Background:

The "giant hand" phenomenon is a recognized form of spatial disorientation experienced by pilots.
A specific incident involving a fighter pilot's ejection was attributed to this phenomenon, with no flight control issues identified.

Purpose of the Study:

To investigate the "giant hand" phenomenon as a cause of aircraft accidents.
To assess the prevalence of this spatial disorientation among tactical aircrews.
To evaluate the adequacy of current aircrew training for managing spatial disorientation.

Main Methods:

Analysis of a fighter pilot mishap attributed to the "giant hand" phenomenon.
Survey of tactical aircrews to determine the occurrence of this spatial disorientation.

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Review of previous recommendations for mitigating the "giant hand" effect.

Main Results:

The "giant hand" phenomenon is not an unusual occurrence among tactical aircrews.
Existing training protocols for aircrew dealing with spatial disorientation have been found to be insufficient.
Previous recommendations suggested a specific grip technique (thumb and index finger) for aircraft recovery.

Conclusions:

The "giant hand" phenomenon poses a significant risk to aviation safety.
Enhanced training and simulation are crucial for aircrew to effectively manage this type of spatial disorientation.
Further research, including advanced spatial disorientation trainers, is recommended to improve flight safety.