Births on April 25

Roger Boisjoly

Born on April 25, 1938

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

Roger Mark Boisjoly ( BOH-zhə-LAY,; April 25, 1938 – January 6, 2012) 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. He was considered a high-profile whistleblower.

References

Roger Boisjoly

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Events on 1938

18 Feb

Nanking Massacre
Second Sino-Japanese War: During the Nanking Massacre the Nanking Safety Zone International Committee is renamed "Nanking International Rescue Committee" and the safety zone in place for refugees falls apart.
12 Mar

Austria
Anschluss: German troops occupy and absorb Austria.
23 Sep

Munich Agreement
Mobilization of the Czechoslovak army in response to the Munich Agreement.
30 Sep

Munich Agreement
Britain, France, Germany and Italy sign the Munich Agreement, allowing Germany to occupy the Sudetenland region of Czechoslovakia.
30 Oct

The War of the Worlds (radio drama)
Orson Welles broadcasts his radio play of H. G. Wells's The War of the Worlds, causing anxiety in some of the audience in the United States.

Births on April 25

Roger Boisjoly

Born on April 25, 1938

References

Choose Another Date

Events on 1938

Nanking Massacre

Austria

Munich Agreement

Munich Agreement

The War of the Worlds (radio drama)