Hellmuth Walter ( 26 August 1900 in Wedel near Hamburg -- 16 December 1980 in Upper Montclair , New Jersey ) was a German engineer who pioneered research into rocket engines and gas turbines .
Hellmuth Walter ( 26 August 1900 in Wedel near Hamburg -- 16 December 1980 in Upper Montclair , New Jersey ) was a German engineer . He pioneered research into rocket engines and gas turbines .