SR-71 Facts: 29 Details That Might Surprise You
Normal Mission Was About 2.5-4.5 Hours Long
Some missions lasted as long as 10 hours or more, which required about 5 aerial refuels. In these missions, pilots were outfitted with special bladders to assist them in urinating if they had to. Also, tubed food was fed through a helmet and water was drunk through a tube as well. This wasn’t the standard, however. Typical missions were closer to 2.5 to 4.5 hours long and only required one or two refuels.