1. Liquid Rocket Engine Injectors
AAE 539: Advanced Rocket Propulsion
Spring 2007

2. Injector Types

3. Injector Types

4. Like-on-Like Impinging Doublet Unlike Impinging Doublet
Impinging Elements
NASA SP-8089
Like-on-Like Impinging Doublet
Unlike Impinging Doublet

5. F-1 Engine: Like-on-Like Impinging Doublet Elements
Oefelein, J. C., and Yang, V., “Comprehensive Review of Liquid Propellant Combustion Instabilities in F-1 Engines,” Journal of Propulsion and Power, Vol. 9, No. 5, Sept.-Oct. 1993, pp

6. Unlike Impinging Triplet
Impinging Elements
NASA SP-8089
Unlike Impinging Triplet
Unlike Pentad

7. Pintle Injector (LMDE)
Dressler, G. A., “Summary of Deep Throttling Rocket Engines with Emphasis on Apollo LMDE,” AIAA Paper

8. SSME: Shear Coaxial Injector
Fuel (Preburner Products)
Oxidizer (LOX)
Lepore, Frank A., “Flow induced vibrations in the SSME injector heads,” NASA CR

9. SSME: Shear Coaxial Injector
Lepore, Frank A., “Flow induced vibrations in the SSME injector heads,” NASA CR

10. RD-180 (Russian ORSC Engine) Element – Swirl Coaxial
Oxidizer (Preburner Products)
Fuel (Kerosene)
271 elements, 1722 lbf each, d = 0.5 in
Vasin, A., et al., United States Patent, US 6,244,041 B1, Jun. 12, 2001