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): Arapeta Awatere • Barbara Rittner • Bruce Ponder • Claudia Salman • Daniel MacPherson • Diego Domínguez (rugby union) • Earl Bostic • Jonathan Bailey • Lorne Currie • Peter Hintze • Princess Alice of the United Kingdom • Princess Mary, Duchess of Gloucester and Edinburgh • Razak Boukari • Vladimir Zhirinovsky • Vladislav Tretiak • Walter de la Mare • William J. Brennan Jr.

Born in the same month (April 1938): Adam Raphael • Bart Giamatti • Betty Cuthbert • Booker Little • Claudia Cardinale • Don Meredith • Doug Lewis (politician) • Earl Anthony • Hso Khan Pha • Iris Johansen • Jeff Barry • Kerry Wendell Thornley • Kofi Annan • Larry Niven • Madge Sinclair • Maurice Williams and the Zodiacs • Roy Thinnes • Spencer Dryden • Steven Bach