Rheintochter I
The Rheintochter I (Rhine Maiden) was intended for use against Allied bomber formations late in World War II. The German ground-to-air rocket was fin-stabilized, and controlled by radio. The flight of the two-stage vehicle was controlled by the four movable vanes on the nose of the craft.
The first stage carried the missile away from the launching rail, while the second stage brought the missile up to full speed and propelled it to the target.
Both the booster and sustainer engines used solid fuel. After a six-tenths of a second burn, the booster dropped off and the sustainer motor ignited. The missile warhead was housed at the rear of the sustainer stage. Exhaust gases were expelled through six nozzles located between the main fins.
The program was abandoned in December 1944, after 82 Rheintochter I rockets had been test fired. By then it had become apparent that the missile could not reach the operational altitude of modern bomber aircraft.