Alan McDonald (engineer)

Alan McDonald was an American aerospace engineer known for his work at NASA, particularly on the Space Shuttle program. He played a key role in the development of the Shuttle's solid rocket boosters. McDonald is notably recognized for his concerns about the safety of the Challenger mission before its tragic launch in 1986, where the shuttle exploded due to a malfunction in the O-rings of its boosters. His insistence on safety and willingness to speak out against potential risks highlighted the importance of addressing engineering dilemmas in the face of pressure, ultimately influencing future aerospace safety protocols.