The performance of a ramjet engine is typically characterized by key parameters that assess its efficiency and effectiveness in generating thrust. The performance of a ramjet engine can be evaluated using various metrics, including specific thrust, thermal efficiency, and overall thrust.
The specific thrust (TS) is a measure of how much thrust is generated per unit of air mass flow rate. It’s an essential parameter for evaluating the engine’s performance.
Formula for specific thrust (TS):
Where:
- TS is the specific thrust (in Newtons per kilogram per second, N/(kg/s)).
- T is the thrust generated by the engine (in Newtons, N).
- ṁ is the air mass flow rate (in kilograms per second, kg/s).