Effect of lunar gravity on man's performance of basic maintenance tasks

Abstract

9 SS WERE TRAINED EXTENSIVELY ON 3 MAINTENANCE TASKS: BOLT TORQUING, CONNECTOR MATING, AND NUT THREADING. THEY WERE RANDOMLY DISTRIBUTED INTO 1 OF 3 CLOTHING CONDITIONS (SHIRT-SLEEVE, VENTED SUIT, AND PRESSURIZED SUIT) AND TRAINED AND TESTED ON ALL 3 TASKS IN 3 GRAVITY CONDITIONS (1 GRAVITY, 1 GRAVITY HARNESSED, AND 1/6 GRAVITY). LUNAR GRAVITY IMPOSED A 25% PERFORMANCE DECREMENT OVER PERFORMANCE IN 1 GRAVITY. THE VENTED SUIT IMPOSED A 60%, AND THE PRESSURIZED SUIT A 150% PERFORMANCE DECREMENT WHEN COMPARED TO THE SHIRT-SLEEVE MODE. PRELIMINARY HUMAN-FACTORS DESIGN CRITERIA ARE SUGGESTED FOR LUNAR-GRAVITY PERFORMANCE AIDS. (PsycInfo Database Record (c) 2025 APA, all rights reserved)