The Ram Rotor Detonation Engine is still experimental. But it is a quantum leap forward in the development of robust and durable hypersonic systems, both in the civilian and military realms.

Made specifically for educational purposes, this Dr. STEM kit is divided into over 250 pieces ... and exhaust. The finished engine measures 7.25 x 7.25 x 11 inches, making it suitable for ...

Denis Healey found him ‘the sort of insubordinate intellectual I find most agreeable’ but he dealt brusquely with Margaret Thatcher Sir Kit McMahon, who has died aged 97, was an Australian ...