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Roger Boisjoly

Roger Boisjoly
Roger Boisjoly, American aerodynamicist and engineer (d. 2012)

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): Barbara RittnerBob GutowskiFelix BerezinFinn HelgesenJoel BrandJohn MoisantJohnny CraigJon KylJoyce RickettsLouis IX of FranceMark Bryant (basketball)Paul WassifRóisín Shortall

Born in the same month (April 1938): Adam RaphaelBart GiamattiBetty CuthbertDuane EddyGani FawehinmiGerry BakerHso Khan PhaIris JohansenIssey MiyakeManfred KinderRonald H. MillerSpencer DrydenSteven BachViktor Chernomyrdin