In 1958, Ludwig Bölkow started in Ottobrunn the development of a rocket engine considered "green" for consuming liquid oxygen and kerosene.

-The first tests were made in 1963 with the engine giving 50 kN of thrust.

Ottobrunn's team joined the one in Lampoldshausen to continue experimenting with rocket engines.

-In 1966 they made an engine running on hydrogen. In 1970 on fluorine.

-The first hydrogen-powered pulsating rocket engine, in 1972.

-About 1992 a hypersonic ramjet was made.

“50 kN engine”

-From 1968 there is another rocket engine with liquid hydrogen and oxygen that gave 180 kN.

-They participated in the development of the HM-7 engine of the Ariane's upper stage. It used a regenerative cooling system, that is, the hydrogen is used for cooling the chamber before entering it for combustion.

-The Lampoldshausen team built bi-fuel engines for the European Symphonie satellite. They were one apogee engine giving 400 kN and seven maneuver and control engines delivering 10N. Year 1974.

A rocket-ramjet operating at Mach 4 from 1988 is known. They continue with the study of turbo-ramjet for future hypersonic aircraft.