Abstract: The G₁ method is proposed to determine the weight factors of the evaluation indexes of cockpit ergonomics. With the aid of this method, 24 experienced pilots on active service who flied several types of fighter were recruited as experts to be surveyed about partial indexes. The weight factors of indexes are calculated according to the investigation results. Then, the weight factors based on different numbers of experts are analyzed in order to study their reliability. The analysis results indicate that the weight factors are stable when the expert number up to some threshold values. Therefore the weight factors of the evaluation indexes calculated according to the investigation results can be used as the guidance used to the design of cockpit ergonomics.

Key words: fighter, cockpit, ergonomics, evaluation, weight value