1 / 5

Dana Lattibeaudiere February 21, 2008 Propulsion Nozzle Design Injectors

Dana Lattibeaudiere February 21, 2008 Propulsion Nozzle Design Injectors. Assistance from Nicole Wilcox & Stephen Bluestone . Nozzle Design . CEA code Addition Pe /Pc ratio as input – varied Pc, O/F for each prop Output parameters: c*, ɛ , γ , Tc , M, a Assumption:

bevan
Télécharger la présentation

Dana Lattibeaudiere February 21, 2008 Propulsion Nozzle Design Injectors

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Dana LattibeaudiereFebruary 21, 2008PropulsionNozzle DesignInjectors Assistance from Nicole Wilcox & Stephen Bluestone AAE 450 Spring 2008

  2. Nozzle Design • CEA code Addition • Pe/Pc ratio as input – varied Pc, O/F for each prop • Output parameters: c*, ɛ, γ, Tc, M, a • Assumption: • Exit Pressure = 48,263 Pa – Reason: Find ɛ AAE 450 Spring 2008

  3. Injectors: • What are those? Who cares? • Cost: ~30% of total engine cost • Recommendations: • Liquid Propellants: • unlike, impinging type of injector • Hybrid Propellants: • Injects ox directly down the port • 91 – 93 % combustion efficiency • Injects ox into a pre-combustion chamber AAE 450 Spring 2008 Propulsion

  4. Backup Slides EXAMPLE: Selected this chamber pressure and O/F = 3 for LOX/LH2 case because there wasn’t much of a loss in Isp as Pc increased. Addition of mass is something we wanted to avoid. AAE 450 Spring 2008 Propulsion

  5. References • Humble, R. W., Henry, G. N., Larson, W. J., Space Propulsion Analysis and Design, McGraw-Hill, New York, NY, 1995. • Sutton, G. P., Rocket Propulsion Elements, Wiley & Sons, INC., New York, NY, 2001. AAE 450 Spring 2008

More Related