Jean mercier biography
Jean mercier biography wikipedia
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Jean Mercier (engineer)
Jean Mercier (1901–1971), a Frenchman, was known as the father of the bladder-type hydraulic accumulator.[1] Mercier fled France for the United States during the Nazi invasion, eventually settling in New York City.
After meeting Edward M. Greer in 1940, the two founded Greer Hydraulics (in 1942) to produce aircraft hydraulic components.
In 1943, Jean Mercier recognized an opportunity for his bladder type accumulators in Hamilton Standard's hydromatic propellers.
Jean mercier biography
They needed a device that would fit inside the dome of their propeller, and have the ability to store sufficient hydraulic fluid to "feather" the propeller on an engine failure that might be experienced in combat. It also had to be able to function at temperatures from −40 °F to +180 °F.
There was a single insurmountable problem—weight, which was a problem since World War II aircraft were quite small. The use of a gas/oil separator, today called a bladder, solved the problem