The British jet engine that failed in the 'Valley of Death'

The article discusses the development of a revolutionary jet engine by Reaction Engines, a British aerospace company. The engineers at Reaction Engines believed they were close to completing this groundbreaking project, which they nicknamed the "Valley of Death." The engine, known as the Synergetic Air-Breathing Rocket Engine (SABRE), was designed to combine the advantages of a jet engine and a rocket engine, potentially revolutionizing air and space travel. However, the project faced significant challenges, including technical issues and funding constraints. Despite the setbacks, the team at Reaction Engines remained determined to overcome the obstacles and bring their innovative technology to fruition. The article highlights the company's perseverance and the potential impact of the SABRE engine on the future of aerospace engineering. The summary covers the key points of the news article, including the company's work on the revolutionary jet engine, the project's challenges, and the team's determination to succeed, within the specified word count range.