In conjunction with these efforts, German engine manufacturer MAN Turbo received a contract from the BMVg to conduct their own work into addressing the specific issues surrounding VTOL-capable engines. It was quickly realised that such efforts would require working with a foreign engine manufacturer; as such, during March 1960, an initial agreement of co-operation was signed between MAN Turbo and British engine manufacturer Rolls-Royce Limited. Under the terms of the 10-year contract established, Germany would acquire knowledge of the latest advances in jet engine technology via Rolls-Royce, as well a joint-development arrangement under which work would be shared, production conflicts minimised, and mutual consensus reached on key decisions. In March 1960, the BMVg issued a development contract to MAN Turbo for a light single-spool turbojet engine, while Rolls-Royce would serve as a major subcontractor on the project; the result of their collaborative efforts for the contract would be the Rolls-Royce/MAN Turbo RB153 turbofan engine.