The L72 was a 427 cu in (7.0 L) 90° overhead valve V8 big-block engine produced by Chevrolet between 1966 and 1969. Initially rated at 450 horsepower, the rating dropped to 425 hp (317 …

The Lockheed Martin SR-72, commonly referred to as "Son of Blackbird," [1] is an American hypersonic concept intended for intelligence, surveillance, and reconnaissance (ISR). …

Jan 2, 2024 · The SR-72 is allegedly designed to be unmanned, hypersonic, and reusable. Its primary functions will likely be intelligence, surveillance, and reconnaissance (ISR) activities.

The 427/425 HP L72 engine was the pinnacle of performance for Chevrolet in 1966. Even though it was the top engine in the Chevrolet line-up, only 1856 L72 full-size cars were produced out …

Feb 8, 2025 · The SR-72 Darkstar, developed by Lockheed Martin's Skunk Works, is poised to become the fastest aircraft in history, reaching a staggering Mach 6 (4,000 mph or 6,400 …

Dec 17, 2024 · A True Game Changer: The SR-72 “Son of Blackbird” (also called the SR-72 Darkstar), Lockheed Martin’s hypersonic successor to the legendary SR-71, aims to achieve …

The basic T-72 is relatively underpowered, with a 780 hp (580 kW) supercharged version of the basic 500 hp (370 kW) V12 diesel engine originally designed for the World War II-era T-34. …

The SR-72 is designed to reach speeds of up to Mach 6, thanks to its turbine-based combined cycle (TBCC) engine. This engine integrates conventional jet propulsion for takeoff and a …

Apr 13, 2021 · The SR-72 Son of Blackbird is envisioned as an unmanned, reusable hypersonic ISR and strike aircraft capable of Mach 6 flight, or nearly double the speed of its predecessor, …

The other engines suffered the same fate: the 402 cubic inch V-8 dropped to 240 horsepower, the 350 cubic inch V-8 was rated at 175 horsepower, and the 307 cubic inch base model V-8 was …