Part 4/9:
Achieving sustained hypersonic speeds involves overcoming considerable engineering challenges. The combustion process must be effectively managed while air travels through the engine at supersonic velocities—something that current turbofans cannot do. Hence, the research hinges on dual-mode propulsion systems that allow continuous powered operation across varying flight conditions.
Key Technological Challenges and Innovations
DARPA's Next RS program concentrates on several essential technological advancements crucial for constructing this hypersonic bomber:
- Structures and Materials: The bomber must withstand extremely high temperatures exceeding 3,270°F (around 1,800°C), requiring innovative, lightweight materials optimized for high-speed applications.