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Frank Marble dies at 96; leader in development of rockets
Frank Marble dies at 96; leader in development of rockets

Frank E. Marble, a Caltech expert on jet propulsion and fluid mechanics who was among the first faculty members selected for the Jet Propulsion Laboratory, has died. He was 96. Marble's Aug. 11 death at a Pasadena nursing facility was caused by illnesses related to old age, said his son, Steve, an editor at the Los Angeles Times. Frank Marble helped develop innovations that made rockets more efficient and dampened the noise generated by the turbines in jet engines. He also trained generations of scientists at JPL and Caltech, where he continued working well after his 1989 retirement as a professor of mechanical engineering and jet propulsion. At Caltech in the late 1940s, Marble...

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