Samuel Alderson — inventor of crash test dummies similar to those used in auto safety tests — died Friday, February 11th, in Marina del Rey.

He was 90 years old.

Alderson — who grew up working in his father’s custom sheet-metal shop — formed Alderson Research Labs in 1952.

At his laboratories, Alderson made humanlike dummies for use by the military and NASA (National Aeronautics and Space Administration) in testing ejection seats and parachutes.

The dummies were built to approximate the weight and density of humans and to hold data-gathering instruments.

Alderson was educated at California Institute of Technology, Columbia University and University of California, Berkeley.

Alderson was widowed once and divorced three times, according to The New York Times.

He is survived by his sister, two sons, and four grandchildren.