## 1. Important Concepts - [[Thrust]] - [[Specific Impulse]] - [[Mixture Ratio]] - [[Stoichiometric Ratio]] - [[Equivalence Ratio]] - [[Area Ratio]] - [[Characteristic Velocity]] ## 2. Types of Rocket Engine Cycles 1. [[Pressure Fed]] 1. [[Mono-propellant]] 2. Pump Fed 1. [[Open Cycle]] 2. [[Open Cycle|Gas Generator Cycle]] 3. [[Tap-Off Cycle]] 3. [[Closed Cycle]] aka [[Closed Cycle|Staged Combustion Cycle]] 1. [[Fuel Rich Staged Combustion]] 2. [[Oxygen Rich Staged Combustion]] 3. [[Full-Flow Staged Combustion]] 4. Expander Cycle 1. [[Open Expander Cycle]] 2. [[Closed Expander Cycle]] 3. [[Dual Expander Cycle]] 5. [[Electrical Pressure Fed]] [[Russian Rocket engines]]