“Top Gun: Maverick” shows secret plane The Darkstar hypersonic jet in Tom Cruise’s latest blockbuster movie offers a peek at what might be the SR-72 – the super-secret experimental spy plane under development by Lockheed Martin DARKSTAR: Full-sized physical mock-up and airborne CGI plane – designed with help from Lockheed Martin engineers – bears striking resemblance to artists’ renderings of SR-72 Tom Cruise piloting Darkstar Darkstar SR-72: Hypersonic jet, successor to legendary SR-71 Blackbird, will employ combined cycle propulsion system which merges turbojet and ramjet engines Turbojet: Provides thrust up to and beyond Mach 3, when ramjet takes over Common inlet feeds air to both engines, reducing drag Common exhaust nozzle Dual-mode ramjet: Air and fuel are fed into combustion chamber and ignited, accelerating vehicle to Mach 6 Splitter rotates to direct airflow to required engine Lockheed SR-71 Blackbird Lockheed Martin SR-72 Role Strategic reconnaissance Strike and reconnaissance Crew Two (pilot and systems operator) Optionally manned Propulsion Turbojet (x2) Combined cycle (x2) Maximum speed Mach 3.3 (4,075km/h) Mach 6 (7,400km/h) History First flight Test flight 2023 1964 Operational 2030 (projected) Retired 1999 Source: Lockheed Martin Pictures: Lockheed Martin, Paramount Pictures © GRAPHIC NEWS