Roger Boisjoly

Roger Mark Boisjoly was an American mechanical engineer, fluid dynamicist, and an aerodynamicist. He is best known for having raised strenuous objections to the launch of the Space Shuttle Challenger months before the loss of the spacecraft and its crew in January 1986. Boisjoly correctly predicted, based on earlier flight data, that the O-rings on the rocket boosters would fail if the shuttle launched in cold weather. Morton Thiokol's managers decided to launch the shuttle despite his warnings, leading to the catastrophic failure. He was considered a high-profile whistleblower.

25 April 1938

Born on the same birth date (25 April 1938): Ton Schulten

Born on the same birth day (25 April): Darren Woodson • Fred McLeod (golfer) • Guglielmo Marconi • Henck Arron • Howard R. Garis • Jacques Santini • Jean Lucas (racing driver) • Jean-Éric Vergne • Jeffrey DeMunn • Lewis Baker (footballer) • Mort Weisinger • Rainer Schüttler • Stu Cook • Theo de Rooij

Born in the same month (April 1938): Duane Eddy • Eszter Tamási • Gani Fawehinmi • Giorgos Sideris • Gordon Wilson (Scottish politician) • John Hamm • Juraj Jakubisko • Mal Colston • Natalya Kustinskaya • Reatha Clark King • Roy Thinnes • Stanley Fish • Steven Bach • Ton Schulten