U.S. Army’s Dark Eagle Hypersonic Weapon System Nears Full Fielding

After years of development and testing, the U.S. Army is on the cusp of completing the fielding of its Long Range Hypersonic Weapon (LRHW) system, known as Dark Eagle. This milestone marks the arrival of the United States’ first operational hypersonic weapon system, designed to rapidly strike heavily defended targets.

What is the Dark Eagle Hypersonic Weapon?

The Dark Eagle is a ground-launched, mobile hypersonic boost-glide weapon system developed by Lockheed Martin [1]. It is capable of traveling at speeds of Mach 5 or greater while maneuvering unpredictably through the Earth’s atmosphere [1]. Unlike traditional ballistic missiles, its flight path can be altered during descent, complicating interception by existing air and missile defense systems [2].

Key Components and Capabilities

The Dark Eagle system consists of a large rocket booster that carries the Common-Hypersonic Glide Body (C-HGB) in a nose cone [2]. Once the booster reaches significant altitude and speed, it releases the C-HGB, which then glides towards its target. The C-HGB has been successfully tested in October 2017, March 2020, June 28, 2024, and December 12, 2024 [2]. The system has a reported range of 1,725 miles [3] and an operational range of 2,175 miles (3,500 km) [2].

Deployment and Fielding Status

Fielding activities for the Dark Eagle began in December 2025 and are expected to be completed in the coming months [1]. The Army expects to complete fielding of the system in 2026 [1]. The system was initially planned to enter service in 2023, but faced delays due to technical issues discovered during flight testing [1].

Navy Integration

The United States Navy plans to procure a ship/submarine-launched variant of the missile as part of the Intermediate-Range Conventional Prompt Strike (IRCPS) program [2]. The Navy intends to field the weapon aboard its Zumwalt-class destroyers by 2025 and later on its Block V Virginia-class submarines in 2028 [2].

Cost and Investment

The U.S. Government Accountability Office estimates that the first operational Dark Eagle battery will cost approximately $2.7 billion, including missiles and associated equipment [2]. This reflects the complexity of hypersonic technology, which requires advanced materials and guidance systems.

Strategic Implications

The Dark Eagle system is designed to provide rapid strike options against high-priority targets in contested environments [1]. Its speed, maneuverability, and altitude flexibility are intended to reduce response times and overcome adversary air defense systems. The development of Dark Eagle is part of a broader international competition in hypersonic weapon development [1].