1. What is a Pulse Detonation Engine?
One of the newest and most exciting areas of pulse-jet development is the Pulse Detonation Engine (PDE). While they work on similar principles to a regular pulsejet, the PDE has one very fundamental difference -- it detonates the air/fuel mixture rather than just allowing it to simply deflagrate (burn vigorously).

2. Advantages New Technology Improved fuel efficiency
Greater operational range
Higher Altitudes
Higher Mach Numbers (0 – 4+)
Longer Flight Range
Reduced Flight Costs
Simpler Mechanical Construction
No Pre - Compression Required
Dual Operational Mode for Single-Stage to Orbit (SSTO) Vehicle

3. Conceptual Advantages II
High Thrust Density
High Specific Impulse
Significant Static Thrust,
Natural Geometry for Integration into a Combined Cycle Engine

4. How do PDEs work?

5. Design Challenges DDT (Deflagration to Detonation Transition)
Inlet pressure ratio
Valve configurations
Overall injector ignition timing
Potential Fuels
Material selection