Ready to fly faster, farther and at lower cost: GE Aerospace and Lockheed Martin demo rotating detonation ramjet

In a series of engine tests, GE Aerospace and Lockheed Martin demonstrated the viability of a liquid-fueled rotating detonation ramjet for use in hypersonic missiles, the first initiative between the companies under a broader joint technology development arrangement.
 

Why It Matters

This fuel-efficient rotating detonation ramjet promises to fly missiles faster—including at hypersonic speeds—and farther while decreasing costs compared to other ramjet options. Here’s how:

• The compact design enables increased fuel or payload capacity and lowers the cost of production.
• Improved fuel efficiency and thrust generation extends range.
• Ignition is achieved at a lower speed, so smaller boosters can be used for ramjet start.
   

How It Works

• The rotating detonation ramjet combusts fuel and air through detonation waves instead of the traditional combustion methods used in ramjet engines today. 
• This propulsion system generates high thrust for super- and hypersonic speeds to engage high-value, time-sensitive targets, with a smaller engine size and weight that boosts range.

What's Next

GE Aerospace and Lockheed Martin will continue ramjet maturation in 2026.