|On the bottom, from the left and seated, Dr. Helmuth Walter who developed the rocket engine and Dr. Alexander Lippisch who designed the Me 163 rocket interceptor, with Me 163 pilots. Picture taken in 1965 at the Duetsches Museum. Lippisch came to the US in 1946 under "Operation Paperclip." His Delta wing designs were used world wide. Lippisch consulted for Northrop and most major US aircraft firms. He was an EAA member and gave regular talks at the EAA Oshkosh Convention. He taught at the University of Iowa. A video titled "The Secret of Flight" by Lippisch is available form the University of Iowa. Call 866-287-1234 to order.