Parents: Anton Dahm and Maria Morkramer Spouse: Kaethe Elizabeth Maxelon (1955), Nell Sheppard Carr (1981) Children: Stephan, Werner J A, Martin, & Thomas Werner Karl Dahm (February 16, 1917 in Lindenthal, Germany – January 17, 2008 in Huntsville, Alabama) was an early spaceflight scientist of the Peenemünde Future Projects Office who emigrated to the US under Operation Paperclip and was the Marshall Space Flight Center Chief Aerodynamicist.

There, as the youngest member of the rocket team, he worked in the future projects division, a group composed mainly of physicists who needed a specialist in aerodynamics.

He was one of a group that conducted pioneering experiments in a small supersonic wind tunnel to obtain essential insights and data to support designs for proposed new rockets.

Along the way, he developed a conical rocket propellant tank that successfully overcame liquid fuel sloshing problems, for which he won an internal prize with a monetary award that he proudly never cashed.

In August 1943, when Allied forces bombed the Peenemuende facilities, he received a commendation for saving critical wind tunnel data during the ensuing fires.

After his release in August 1945, he briefly worked in a candle factory of family friends in Bonn, until accepting an invitation from the U.S. as part of Operation Paperclip to join the U.S. Army's nascent rocket program with other members selected from von Braun's team.

He developed a successful Mach 5 ballistic re-entry nose cone using a purely theoretical approach, at a time when no hypersonic wind tunnels existed to test the theories or provide needed data.

Following the Russian Sputnik launch, in July 1960 he moved with other von Braun rocket scientists from the Army Ballistic Missile Agency to the newly founded NASA.

There, as part of the Apollo Moon landing program, he made major contributions working on the Saturn V booster rocket, on aerothermodynamics, and on liquid hydrogen propellant systems.