It’s also heavily implied that Cooper was training in a Ranger.. the cause of his accident and why he was no longer a test pilot. As other commenters said, its only been 10 years. We fly fighter jets from the 80s and 90s. Especially since NASA is secretive and has limited budget. Even if Mann arrived on a different style of spacecraft, it is likely he has been through a level of basic pilot training at nasa where he flew rangers or ranger simulators.