Running on fumes ... of the hippie kind.
Are you stark raving bonkers?
If they were licensing that, no rocket would be flying yet.
In April 2015, the SABRE engine concept passed a theoretical feasibility review conducted by the U.S. Air Force Research Laboratory, the lab will reveal two-stage-to-orbit SABRE concepts in the near future, they believe that a single-stage-to-orbit Skylon space plane is "technically very risky as a first application of SABRE engine ," and this is why they are developing two-stage-to-orbit concepts. In August 2015 the European Commission competition authority approved UK government funding of £50 million for further development of the SABRE project. This was approved on the grounds that money raised from private equity had been insufficient to bring the project to completion. Then in October 2015, British company BAE Systems agreed to buy a 20% stake in the company for £20.6 million as part of an agreement to help develop the SABRE hypersonic engine.
Yeah, incomplete project and BAE gets involved, that's gonna be a good engine for launches with minimal red tape... NOT!!!
You actually want stuff that works, sooner rather than later. Cutting edge does not need to go into self-cutting bleeding edge.